Re: [meteorite-list] Earth Trojan asteroids: FOOTNOTE
Sterling K. Webb wrote: Sky angle roughly 60 degrees up from the horizon Whoops! With 72 minutes of civil, nautical and astronomical twlight (24 minutes each) needing to past before skies were completely dark, the beginning sky angle for a search would then be 42 degrees. Sterling K. Webb __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Oman
Yes, clearly - if it weren't for the evil, genetically altered Fed Monsters swooping down on people with their black bat wings in the dark of night, those poor, maligned Omani noblemen would never have been provoked into their vile deeds. ...'cause nothing bad ever happened to anyone until the Homeland Security Act came into being. Wow - I actually feel dumber after having read that email. Thanks a lot. MDF Hi all, Wile I do not mean in any way to minimize the trauma and outrageousness of this escapade, I cannot help but wonder if it was inspired by the US Homeland Security Act by which our government has declared it will (and has) do exactly the same thing at any time and to any one. Don¹t take my word for it - just take the time to read a few of the more terrifying paragraphs, then take note that it states, and has acted on the premise, that anyone engaged in any behavior deemed supportive of terrorism INCLUDES POT SMOKERS (and a WIDE array of other equally ridiculous behaviors) - (pot users spend money on drugs drug dealing has been one way terrorists have used to raise money for terrorist acts - you even see it on TV commercials). I wish I were making all this up. We have all heard about John Ivan's (as well as others I do not know as well) horror story - They are educated, connected and internationally known - even if it is a relatively small world wide community. But this kind of thing is happening in the US - you just don't hear about it much - and even if it is relatively rare - it marks a very clear suspension, if not end, to our constitutional rights. I was not going to bring this up at all for fear it would look like I were minimizing the outrageousness of the Oman episode. I certainly would not go to Oman - unfortunately, the high ranking officials in the US I cannot be so easily rid of. On the other hand, meteorite hunting does not YET seem to be high on their list for an excuse to relieve you of your constitutional right to trial, representation, property, etc. Apparently, in Oman, it is. I laud John for creating this web site and hope he has notified his senator and representative of this reprehensible act (knowing John, I suspect he has). While such notification is very unlikely to result in the recovery of stolen property - and nothing can replace the time in custody and the anxiety that must have been involved in being in the hands of people proving themselves capable of such outrageous behavior (if they would hold a US citizen without access to the US counsel, steel his possessions, deny access to representation, etc, are they not also capable of deciding to simply take him out of the picture altogether to insure anonymity?) Best wishes, Michael on 6/23/05 6:52 AM, Gerald Flaherty at [EMAIL PROTECTED] wrote: Martin, This episode with John, like the one described by Mike Farmer on this list a couple of months ago, seems more a revolutionary rather than an evolutionary change in Oman policy. That does not give one sufficient time to acclimate and tailor one's choices. If people have enjoyed the hospitality of a region for some time one should expect that same hospitality on their planned trip. John's site warns the would-be tourist that this is no longer the case and I for omne will not venture there based upon his experience. John also refers to high ranking officials involved in his misadventure. This becomes a rather general inditment of a coutry's intent and seems rather important to advise against travel based upon personal experience. Again , I for one will take John's advise in this case. Jerry Flaherty - Original Message - From: Martin Altmann [EMAIL PROTECTED] To: JKGwilliam [EMAIL PROTECTED]; meteorite-list@meteoritecentral.com Sent: Thursday, June 23, 2005 7:06 AM Subject: Re: [meteorite-list] Fwd: To all interested Parties Hiho, that, what is positive on that homepage, is that it settles all the rumours about that incident, but the conclusions drawn, in my opinion at least, are somewhat strange. My regret is to John Blennert, who obviously blames with this homepage a whole country for him having been unable to inform himself accurately before he was going there. To me it seems like travelling to a tropical country, returning ill from malaria and afterwards blaming a whole nation, because one didn't care for a prophylaxis. Some points: Can't see, why normal travellers, who will visit Oman for tourism, should ever come in a situation like you was in, to get in conflict with written or unwritten laws, as they are going there not for hunting minerals, rocks, meteorites. In my humble opinion, I'd say, if you were able to organize and to plan the logistics of that trip, a part of these preparations should have comprised to check, whether there are any legal obstacles to hunt or to remove meteorites from
Re: [meteorite-list] Oman
Having seen the belt of terror map on national television morning newslooks like it falls for the most part, in the hot desert meteorite zones, and/or in the zones of religious tourmoil...wonder how we separate these three? More, seems to follow the band of underdeveloped economic zones of the world somewhat. Dear Marc; Now I feel my IQ has altered, great experiment! Best, Dave F. Marc Fries wrote: Yes, clearly - if it weren't for the evil, genetically altered Fed Monsters swooping down on people with their black bat wings in the dark of night, those poor, maligned Omani noblemen would never have been provoked into their vile deeds. ...'cause nothing bad ever happened to anyone until the Homeland Security Act came into being. Wow - I actually feel dumber after having read that email. Thanks a lot. MDF Hi all, Wile I do not mean in any way to minimize the trauma and outrageousness of this escapade, I cannot help but wonder if it was inspired by the US Homeland Security Act by which our government has declared it will (and has) do exactly the same thing at any time and to any one. Don¹t take my word for it - just take the time to read a few of the more terrifying paragraphs, then take note that it states, and has acted on the premise, that anyone engaged in any behavior deemed supportive of terrorism INCLUDES POT SMOKERS (and a WIDE array of other equally ridiculous behaviors) - (pot users spend money on drugs drug dealing has been one way terrorists have used to raise money for terrorist acts - you even see it on TV commercials). I wish I were making all this up. We have all heard about John Ivan's (as well as others I do not know as well) horror story - They are educated, connected and internationally known - even if it is a relatively small world wide community. But this kind of thing is happening in the US - you just don't hear about it much - and even if it is relatively rare - it marks a very clear suspension, if not end, to our constitutional rights. I was not going to bring this up at all for fear it would look like I were minimizing the outrageousness of the Oman episode. I certainly would not go to Oman - unfortunately, the high ranking officials in the US I cannot be so easily rid of. On the other hand, meteorite hunting does not YET seem to be high on their list for an excuse to relieve you of your constitutional right to trial, representation, property, etc. Apparently, in Oman, it is. I laud John for creating this web site and hope he has notified his senator and representative of this reprehensible act (knowing John, I suspect he has). While such notification is very unlikely to result in the recovery of stolen property - and nothing can replace the time in custody and the anxiety that must have been involved in being in the hands of people proving themselves capable of such outrageous behavior (if they would hold a US citizen without access to the US counsel, steel his possessions, deny access to representation, etc, are they not also capable of deciding to simply take him out of the picture altogether to insure anonymity?) Best wishes, Michael on 6/23/05 6:52 AM, Gerald Flaherty at [EMAIL PROTECTED] wrote: Martin, This episode with John, like the one described by Mike Farmer on this list a couple of months ago, seems more a revolutionary rather than an evolutionary change in Oman policy. That does not give one sufficient time to acclimate and tailor one's choices. If people have enjoyed the hospitality of a region for some time one should expect that same hospitality on their planned trip. John's site warns the would-be tourist that this is no longer the case and I for omne will not venture there based upon his experience. John also refers to high ranking officials involved in his misadventure. This becomes a rather general inditment of a coutry's intent and seems rather important to advise against travel based upon personal experience. Again , I for one will take John's advise in this case. Jerry Flaherty - Original Message - From: Martin Altmann [EMAIL PROTECTED] To: JKGwilliam [EMAIL PROTECTED]; meteorite-list@meteoritecentral.com Sent: Thursday, June 23, 2005 7:06 AM Subject: Re: [meteorite-list] Fwd: To all interested Parties Hiho, that, what is positive on that homepage, is that it settles all the rumours about that incident, but the conclusions drawn, in my opinion at least, are somewhat strange. My regret is to John Blennert, who obviously blames with this homepage a whole country for him having been unable to inform himself accurately before he was going there. To me it seems like travelling to a tropical country, returning ill from malaria and afterwards blaming a whole nation, because one didn't care for a prophylaxis. Some points: Can't see, why normal travellers, who will visit Oman for tourism, should ever come in a situation like you was in, to get in conflict with
[meteorite-list] Dean Bessey material from a new supllier - what is it ?
Hello all, This morning I finally got to look at a new fragment of a meteorite that Dean Bessey sold as an un-cut, unclassified meteorite that is probably an LL. He sold about 5 small pieces an I bought one of them for about $5/g. The material was from a new supplier, making it somewhat unique in Dean's eyes. The fragment has a nice black melted crust, not unlike many HED meteorites. There is a pull with a strong magnet similar to an LL. Not weak, but not strong like an L. There are no signs of chondrules on the slightly brown-weathered broken faces. Looks like a fair amount of orthopyroxene sticking through. To me it is a nice Diogenite, but I have yet to cut it. I was wondering if anyone else who bought a piece has studied it enough to come to a conclusion? Has anyone cut it yet either ? Curious, but not ready to cut. John __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Omani meteorite museum
Hello List; I have been reading the posts to the list with much curiosity.There was a post that stated Meteorite hunting isn't a priority YET..But i think it is and will become a higher priority in the desert countries,that is to stop what the american university researchers and desert governments,consider SMUGGLING.The governments of these countries see an asset for tourist business in meteorite museums.The researchers see a good supply of rare meteorites for study and their own personal collections. I read an article in our local newspaper regarding the fact that Larry Taylor from the University of Tennessee was to go to Oman to assist in research for a meteorite museum in Oman.and in the article it was mentioned that Oman wanted to stop smuggling of meteorites by other nationalities.So,i guess anyone going to the desert countries should expect the same treatment John and company received from Oman and probably a lot worse.I didn't read any mention of automatic weapons involved in their experience.I'm glad of that.But othersWILL HAVE THEMand probably american made.Cherish those NWA'S.When the world reads John's website,they will be savvy on the matter of meteorite hunting. I don't mean any detriment to anyone with this e-mail,if anyone takes offensei'm sorrysaid ahead of time.Meteorite collecting is a great and fun hobby.Not to mention very educational.But money,prestige and greed always seems to follow something so precious and rare.I guess everyone will have to be cautious and keep their ears to the ground for the changes that are a coming. Thank you for your time,and i love to read all your posts.Good luck Meteorite collecting. Herman Archer. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Dean Bessey material from a new supllier - what is it ?
Hello folks, below are some photobucket pics of the 17.6 g fragment I am talking about. I added them just now. the pics were rushed (my apologies), and this is my first attempt at using photobucket. let's try direct links to pics. http://i19.photobucket.com/albums/b164/gabbroman/besseynew006.jpg http://i19.photobucket.com/albums/b164/gabbroman/besseynew003.jpg http://i19.photobucket.com/albums/b164/gabbroman/besseynew001.jpg John -- Original message from [EMAIL PROTECTED]: -- Hello all, This morning I finally got to look at a new fragment of a meteorite that Dean Bessey sold as an un-cut, unclassified meteorite that is probably an LL. He sold about 5 small pieces an I bought one of them for about $5/g. The material was from a new supplier, making it somewhat unique in Dean's eyes. The fragment has a nice black melted crust, not unlike many HED meteorites. There is a pull with a strong magnet similar to an LL. Not weak, but not strong like an L. There are no signs of chondrules on the slightly brown-weathered broken faces. Looks like a fair amount of orthopyroxene sticking through. To me it is a nice Diogenite, but I have yet to cut it. I was wondering if anyone else who bought a piece has studied it enough to come to a conclusion? Has anyone cut it yet either ? Curious, but not ready to cut. John __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Mars Odyssey THEMIS Images - June 20-24, 2005
MARS ODYSSEY THEMIS IMAGES June 20-24, 2005 o Arsia Mons Southern Flank (Released 20 June 2005) http://themis.la.asu.edu/zoom-20050620a.html o Arsia Mons Lava Flows (Released 21 June 2005) http://themis.la.asu.edu/zoom-20050621a.html o Arsia Mons Surface Flow (Released 22 June 2005) http://themis.la.asu.edu/zoom-20050622a.html o Arsia Mons Overlapping Flows (Released 23 June 2005) http://themis.la.asu.edu/zoom-20050623a.html o Filled Crater (Released 24 June 2005) http://themis.la.asu.edu/zoom-20050624a.html All of the THEMIS images are archived here: http://themis.la.asu.edu/latest.html NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] XMM-Newton to Observe Deep Impact
http://www.esa.int/SPECIALS/Rosetta/SEMSZC2DU8E_0.html
XMM-Newton to observe Deep Impact
European Space Agency
23 June 2005
ESA's orbiting X-ray observatory XMM-Newton joins the fleet of
spacecraft taking part in one of the world's largest astronomical
observation campaigns - the Deep Impact event - on 4 July 2005.
On 4 July, NASA's Deep Impact mission will send a 370 kg copper
projectile ('impactor') to impact on Comet 9P/Tempel 1, to dig into the
secrets of its nucleus.
Comets are very interesting celestial objects. In fact, their
composition carries important information about the origin of the Solar
System, as they have remained virtually unchanged since then.
X-ray observations obtained by chance during a natural outburst from
Comet Hale-Bopp showed a strong increase in X-ray intensity related to
the dust-rich cloud that emerged on that event.
It was decided to commission ESA's XMM-Newton X-ray observatory, one of
the biggest science satellites ever built in Europe, to make X-ray
spectroscopic measurements of this upcoming impact, and contribute to
the rare knowledge about the properties of comets.
Spectroscopy - the spreading of light into a spectrum - is at the heart
of the XMM-Newton observations and allows astronomers to measure a
source's composition.
In the same way the colour of a lamp indicates what gas is used in
street lighting, the three scientific instruments on board XMM-Newton
will reveal the deepest secrets of this comet, including its chemical
composition and temperature.
Because the interior of a comet nucleus has been much less modified by
solar radiation and cosmic rays, it is believed to be different from the
surface crust and the material that sublimates there to form the comet
tail. As a result of the impact, it is expected that a vast amount of
this material will be released from the interior into space.
This induced outburst of the comet's nucleus and the expected X-ray
emission will be observed by XMM-Newton's three instruments. The X-ray
spectrometer (RGS), the three X-ray cameras (EPIC) and its optical and
ultraviolet monitor (OM) will collect information about the comet's
materials that is not usually accessible to observations.
All instruments used will operate simultaneously for a total of just
over 24 hours. It is planned to observe for about 6 hours before the
event and for 18 hours after it, which will allow XMM-Newton to observe
changes in the composition of the ejected material.
XMM-Newton will transmit the obtained data continuously to the European
Space Astronomy Centre (ESAC) in Spain, via ESA's mission control centre
at the European Space Operations Centre (ESOC), Darmstadt, Germany.
The raw scientific data are monitored in real time by the XMM-Newton
team at ESAC. Generally data processing is done in two steps: generation
of data files at ESAC within 10 days and, after the observations,
generation of pipe-line products at the Survey Science Centre,
Leicester, UK. But data of moving objects, like this comet
observation, require special processing that is done by the XMM-Newton
team after the generation of the data files.
When not observing Comet Tempel 1, XMM-Newton's actual mission is to
help solve many cosmic mysteries of the violent Universe, from what
happens in and around black holes to the formation of galaxies in the
early Universe. XMM-Newton has detected more X-ray sources than any
previous satellite.
Its telescope mirrors are some of the most optically efficient ever
developed and, with its highly sensitive detectors, XMM-Newton sees much
more than any previous X-ray satellite. XMM-Newton's high-technology
design uses over 170 wafer-thin cylindrical mirrors spread over three
telescopes.
Its orbit takes it almost a third of the way to the Moon, so that
astronomers can enjoy long, uninterrupted views of celestial objects.
For more information:
Norbert Schartel, ESA XMM-Newton Project Scientist
E-mail: norbert.schartel @ sciops.esa.int
Rita Schulz, ESA BepiColombo Project Scientist
E-mail: rita.schulz @ esa.int
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[meteorite-list] OT; NASA coverup?
Hello List, the list is rather slow, so I thought I might ask a question. I think I discovered a NASA cover-up! I was reading a page on the NASA website; http://www.nasa.gov/centers/dryden/news/FactSheets/FS-011-DFRC.html I noticed this story; The M2-F2 weighed 4,620 pounds without ballast, was roughly 22 feet long, and had a width of about 10 feet. On May 10, 1967, during the sixteenth glide flight leading up to powered flight, a landing accident severely damaged the vehicle and seriously injured the NASA pilot, Bruce Peterson. I don't know what kind of crap NASA is trying to pull, but I remember that accident like it was yesterday! Ya, the pilot was seriously injured and there was damage to the vehicle, but saying Bruce Peterson was the pilot is either a mistake or a cover-up! If you remember, the pilot of that flight was Colonel Steve Austin. He lost an eye, both legs and an arm in the accident! But they took care of it, remember? We can rebuild him. We have the technology. We have the capability to make the world's first Bionic man. Steve Austin will be that man. Better than he was before. Better . . . stronger . . . faster. Is NASA trying to hide the fact that they spent six million of our tax dollars? Thanks, Tom peregrineflier __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Keck Foundation Gives $1.5 Million for New Cosmochemistry Lab at UH
http://www.uhf.hawaii.edu/NewsEvents/2005/news-press_050518.asp University of Hawai'i Foundation Press Release Contact Lori Abe - Associate VP for Communications Marketing Phone: 808-956-6774 Email: [EMAIL PROTECTED] W.M. Keck Foundation Gives $1.5 Million for New Cosmochemistry Lab at UH May 19, 2005 (Honolulu, Hawai'i) - The University of Hawai'i Foundation has received a $1.5 million grant from the W.M. Keck Foundation to support the creation of a new cosmochemistry laboratory whose center piece will be a state-of-the-art ion microprobe. An ion microprobe is an instrument that allows not only determination of the trace element contents of microscopically small samples, but also their isotopic compositions. The instrument and laboratory will be located in the Hawaii Institute of Geophysics and Planetology of the School of Ocean and Earth Science and Technology (SOEST) at UH Manoa. The laboratory will be amongst the most advanced of its kind in the world, enabling our internationally renowned scientists to work on problems such as the formation and evolution of stars, planets and the solar system. Interdisciplinary research will be the heart of the cosmochemistry laboratory. Perhaps more than any other field, cosmochemistry is an interdisciplinary science connecting such fields as meteoritics, astrophysics, mineralogy, and isotope studies (through studies of interstellar grains), planetary geology, geophysics and petrology (through studies of lunar rocks and Martian meteorites), and studies of interstellar organic materials, early life on Earth, and geochemistry of Martian meteorites (through the new subdiscipline of astrobiology). The new ion microprobe will be the catalyst that ignites research among cosmochemists and astronomers to fuel studies of the origin of the solar system, including the Earth. Commented UH Manoa Chancellor Peter Englert, An award of this caliber by a prestigious institution, such as the W.M. Keck Foundation, highlights both the quality and range of research expertise at the university and is a testament to our growing reputation within the international scientific community. Cosmochemistry focuses on laboratory analyses of meteorites, lunar samples, interplanetary dust particles, and interstellar grains, as well as experimental simulations of planetary, nebular, and circumstellar processes, and a great deal of what is known about the origin and evolution of extraterrestrial bodies is due to these efforts. The cosmochemistry program at the University of Hawai`i has direct connections with many current and planned spacecraft missions that will return samples, such as Genesis, Stardust, and Mars sample return missions. Equally important, though less direct, the program also provides information critical for the interpretation of remote sensing data. Moreover, the cosmochemistry program also addresses questions posed by materials derived from places where no spacecraft could ever go, such as into the deep interiors of stars or planets, or back in time. The new laboratory will build on the success of the cosmochemistry program and open new doors of research. The university has made a concerted effort to foster the program over the years and will support the laboratory with a one-time $ 1 million commitment. In addition, acquisition of the ion microprobe for the laboratory was selected as one of seven proposals, out of a total of 17 submitted, approved for funding in 2004 through NASA's Sample Return Laboratory Instruments and Data Analysis Program (SRLIDAP). This program will has provided an additional $ 1.4 million grant to support the new laboratory. Dr. Klaus Keil, interim dean of SOEST, stated, With the funding for the Cameca ims 1280 ion microprobe secured, it will be possible for our research group to really make a quantum leap forward in the field of cosmochemistry. Keil added, We have a stellar group of core investigators and are particularly excited that we were able to add Dr. Gary Huss, formerly of Arizona State University, and Dr. Kazu Nagashima, formerly of the Tokyo Institute of Technology, both world-renowned experts in ion microprobe analysis and cosmochemistry, to our team. About the W.M. Keck Foundation Based in Los Angeles, the W. M. Keck Foundation was established in 1954 by the late W. M. Keck, founder of the Superior Oil Company. The Foundation's grant making is focused primarily on pioneering efforts in the areas of medical research, science and engineering. The Foundation also maintains a program to support undergraduate science and humanities education and a Southern California Grant Program that provides support in the areas of health care, civic and community services, education and the arts, with a special emphasis on children. About the School of Ocean and Earth Science and Technology The School of Ocean and Earth Science and Technology (SOEST) was established by the Board of Regents of the University of Hawaii in 1988. SOEST brings
Re: [meteorite-list] Ali Hmani on Ensisheim 2005
Probably not what you were looking for, fusion crust is only a fraction of a mm, but bought at the same booth. Nice regmaglypts (sp?)! http://homepage.hispeed.ch/Apicius/S2010006.JPG Regards, Julien On 22/06/05, Meteoryt.net [EMAIL PROTECTED] wrote: Hi I want to ask for something. Ali Hmani have amazing fragment of oriented chondrite with... 3-4mm thick fussion crust. REALLY ! But when I decided to buy it it was gone. If there is lucky buyer, pls contact me offlist PS. Great show -[ MARCIN CIMALA ]-[ I.M.C.A.#3667 ]- http://www.Meteoryt.net [EMAIL PROTECTED] http://www.PolandMET.com [EMAIL PROTECTED] http://www.Gao-Guenie.com GSM +48(607)535 195 [ Member of Polish Meteoritical Society ] __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Russia Planning Double Assault on Mars
On Fri, 24 Jun 2005 12:43:40 -0700 (PDT), Ron Baalke [EMAIL PROTECTED] wrote: The first, in 2009, is a mission to orbit Mars and land on the tiny moon Phobos, where a rover would roam for three years. There, it would collect samples of soil to bring back to Earth - the first ever if Hope everything goes well. Neglecting the search for evidence of life, I'm more interested in a rover and return sample from an asteroid than I am with a differentiated object. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Russia Planning Double Assault on Mars
The first, in 2009, is a mission to orbit Mars and land on the tiny moon Phobos, where a rover would roam for three years. There, it would collect samples of soil to bring back to Earth - the first ever if Hope everything goes well. Neglecting the search for evidence of life, I'm more interested in a rover and return sample from an asteroid than I am with a differentiated object. Phobos is suspected to be a captured asteroid in orbit around Mars. Ron Baalke __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] looking for a nice piece of SIKOTE-ALIN
Hi list.I am looking for a $250 and $350 piece of sikote-alin.Can someone help me out? steve Steve R.Arnold, Chicago, IL, 60120 Illinois Meteorites,Ltd! website url http://stormbringer60120.tripod.com Yahoo! Sports Rekindle the Rivalries. Sign up for Fantasy Football http://football.fantasysports.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Detour: Planetary Construction Zone Ahead
http://www.cfa.harvard.edu/press/pr0521.html Harvard-Smithsonian Center for Astrophysics Release No.: 05-21 For Release: Friday, June 24, 2005 Note to editors: High-resolution artwork to accompany this release is available online at http://www.cfa.harvard.edu/press/pr0521image.html. Detour: Planetary Construction Zone Ahead Cambridge, MA--Interstellar travelers might want to detour around the star system TW Hydrae to avoid a messy planetary construction site. Astronomer David Wilner of the Harvard-Smithsonian Center for Astrophysics (CfA) and his colleagues have discovered that the gaseous protoplanetary disk surrounding TW Hydrae holds vast swaths of pebbles extending outward for at least 1 billion miles. These rocky chunks should continue to grow in size as they collide and stick together until they eventually form planets. We're seeing planet building happening right before our eyes, said Wilner. The foundation has been laid and now the building materials are coming together to make a new solar system. Wilner used the National Science Foundation's Very Large Array to measure radio emissions from TW Hydrae. He detected radiation from a cold, extended dust disk suffused with centimeter-sized pebbles. Such pebbles are a prerequisite for planet formation, created as dust collects together into larger and larger clumps. Over millions of years, those clumps grow into planets. We're seeing an important step on the path from interstellar dust particles to planets, said Mark Claussen (NRAO), a co-author on the paper announcing the discovery. No one has seen this before. A dusty disk like that in TW Hydrae tends to emit radio waves with wavelengths similar to the size of the particles in the disk. Other effects can mask this, however. In TW Hydrae, the astronomers explained, both the relatively close distance of the system and the stage of the young star's evolution are just right to allow the relationship of particle size and wavelength to prevail. The scientists observed the young star's disk with the VLA at several centimeter-range wavelengths. The strong emission at wavelengths of a few centimeters is convincing evidence that particles of about the same size are present, Claussen said. Not only does TW Hydrae show evidence of ongoing planet formation, it also shows signs that at least one giant planet may have formed already. Wilner's colleague, Nuria Calvet (CfA), has created a computer simulation of the disk around TW Hydrae using previously published infrared observations. She showed that a gap extends from the star out to a distance of about 400 million miles - similar to the distance to the asteroid belt in our solar system. The gap likely formed when a giant planet sucked up all the nearby material, leaving a hole in the middle of the disk. Located about 180 light-years away in the constellation Hydra the Water Snake, TW Hydrae consists of a 10 million-year-old star about four-fifths as massive as the Sun. The protoplanetary disk surrounding TW Hydrae contains about one-tenth as much material as the Sun - more than enough to form one or more Jupiter-sized worlds. TW Hydrae is unique, said Wilner. It's nearby, and it's just the right age to be forming planets. We'll be studying it for decades to come. This research was published in the June 20, 2005, issue of The Astrophysical Journal Letters. Headquartered in Cambridge, Mass., the Harvard-Smithsonian Center for Astrophysics (CfA) is a joint collaboration between the Smithsonian Astrophysical Observatory and the Harvard College Observatory. CfA scientists, organized into six research divisions, study the origin, evolution and ultimate fate of the universe. For more information, contact: David Aguilar, Director of Public Affairs Harvard-Smithsonian Center for Astrophysics Phone: 617-495-7462 Fax: 617-495-7468 [EMAIL PROTECTED] Christine Pulliam Public Affairs Specialist Harvard-Smithsonian Center for Astrophysics Phone: 617-495-7463, Fax: 617-495-7016 [EMAIL PROTECTED] __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] looking for a nice piece of SIKOTE-ALIN
Hi Steve, I have a super oriented SA I will sell for $250, that is only $19 a gram, it weighs 13 grams : ) Thanks, Tom peregrineflier - Original Message - From: Steve Arnold, Chicago!!! [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Friday, June 24, 2005 2:38 PM Subject: [meteorite-list] looking for a nice piece of SIKOTE-ALIN Hi list.I am looking for a $250 and $350 piece of sikote-alin.Can someone help me out? steve Steve R.Arnold, Chicago, IL, 60120 Illinois Meteorites,Ltd! website url http://stormbringer60120.tripod.com Yahoo! Sports Rekindle the Rivalries. Sign up for Fantasy Football http://football.fantasysports.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.323 / Virus Database: 267.8.0/27 - Release Date: 6/23/2005 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] More than 40 Nights of Kitt Peak Observations of NASA's Deep Impact Comet to Culminate on July 3
http://www.noao.edu/outreach/press/pr05/pr0505.html National Optical Astronomy Observatory FOR IMMEDIATE RELEASE: Thursday, June 23, 2005 RELEASE NO: NOAO 05-05 More than 40 Nights of Kitt Peak Observations of NASA's Deep Impact Comet to Culminate on July 3 For More Information: Douglas Isbell Office of Public Affairs and Educational Outreach National Optical Astronomy Observatory Phone: 520/318-8230 E-mail: [EMAIL PROTECTED] All of the major telescopes of the National Optical Astronomy Observatory (NOAO) on Kitt Peak are observing comet Tempel 1 for several nights before and after the planned Deep Impact event. Indeed, by the night of July 8, Kitt Peak National Observatory will have been used for 43 nights in 2005 in scientific support of the planned collision at approximately 10:52 p.m. local time on July 3 between the icy comet and a special probe released from the main Deep Impact spacecraft. The coordinated observing team on Kitt Peak's major National Science Foundation telescopes consists of Tony Farnham, Matthew Knight and Rob Swaters from the University of Maryland, and Beatrice Mueller and Nalin Samarasinha from the NOAO scientific staff. The team's goal was to monitor Comet Tempel 1 on a monthly basis, with two main purposes. First, we need to figure out the fundamental physical properties of the comet, so that we can provide information to the Deep Impact mission science team that can be used in both the long- and short-term planning of the mission, Farnham says. By observing Tempel 1 every month, we can determine how it changes with time, which helps us predict what it will be doing at the time of impact. Second, we need to follow its behavior under normal circumstances, so that when we observe it after the encounter, we can separate out the changes that result from normal variations in the comet from the changes that are caused by the impact. Between January and June 2005, the team had a total of 24 nights of observing time at the Kitt Peak 2.1-meter and Mayall 4-meter telescopes. During these observing runs, we imaged the comet using a broadband and several narrowband filters, which allow us to isolate the light from different gases and from the dust, Farnham explains. The resulting images can be used to study the structure of the gas and dust in the coma, as well as allowing us to use the brightness to measure how much gas and dust is being produced. We used the images obtained between January and May to determine many of the rotational properties of the nucleus, and used that information to predict how the nucleus will look to the Deep Impact spacecraft during its approach. Around the time of impact, the team has observing time on three different Kitt Peak telescopes: eight nights at the 4-meter telescope, which will be used for narrowband imaging, five nights at the WIYN 3-5 meter telescope for optical spectroscopy, and seven nights at the 2.1-meter to obtain infrared images. Mayall 4-meter telescope at Kitt Peak On the night of impact, Farnham will be at the Mayall 4-meter telescope taking images of the comet with narrowband filters to look for changes in the comet after the event. Potential changes include increases in the amount of gas and dust that is being produced, immediate changes in the structure of its coma (the comet's surrounding cloud of material) as any crater ejecta expands away from the nucleus, and any long-term changes that occur as a result of fundamental changes on the nucleus. Kitt Peak 2.1-meter telescope Matthew Knight and Rob Swaters of the University of Maryland will be observing the Deep Impact encounter with the 2.1-meter telescope using the SQIID camera from two nights before impact until five nights after impact. This will be a unique part of the worldwide observing campaign, as SQIID is the only camera which will take simultaneous images in the J, H, and K bands. Comparison of the relative fluxes in these bandpasses will probe the temperature evolution of the coma in the days after impact. Knight will have spent 18 nights observing Tempel 1 at Kitt Peak National Observatory this year (plus eight additional nights in which data on Tempel 1 were obtained during a different project.) WIYN 3.5-meter telescope Beatrice Mueller and Nalin Samarasinha of the NOAO scientific staff will observe at the WIYN telescope from July 2 - 6, using the Densepack fiber spectrograph. They expect to observe the emission lines of molecules such as CN, C2, C3, CH, and CO+. We can study the relative abundances of these species and see if and how they change. These are daughter speciesthat arise from subsequent interactions after the material leaves the comet, Mueller says. With Densepack, we can sample the coma simultaneously and see if all these lines originate from the nucleus or if some are from distributed sources. Together with the University of Maryland group, we have observed the comet every month for at least four nights per month with imaging in
Re: [meteorite-list] looking for a nice piece of SIKOTE-ALIN
Steve... There really is only one place to go for the best quality Sikhote-alin meteorites. That would be: http://www.sikhote-alin.com/ Email your want list for discounts. Have a great weekend ! Jim Strope 421 Fourth Street Glen Dale, WV 26038 http://www.catchafallingstar.com - Original Message - From: Steve Arnold, Chicago!!! [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Friday, June 24, 2005 5:38 PM Subject: [meteorite-list] looking for a nice piece of SIKOTE-ALIN Hi list.I am looking for a $250 and $350 piece of sikote-alin.Can someone help me out? steve Steve R.Arnold, Chicago, IL, 60120 Illinois Meteorites,Ltd! website url http://stormbringer60120.tripod.com Yahoo! Sports Rekindle the Rivalries. Sign up for Fantasy Football http://football.fantasysports.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Ad, beautiful 32g brecciated meteorite
Hey List, I am trying to save up for a meteorite I want, so I put one of my favorite meteorites on ebay at a 99 cent opening bid and no reserve! It is a beautiful meteorite, you might want to check it out. Hey, you might get it for 99 cents, and believe me, it is worth at least that much! : ) http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemcategory=3239item=6542051779; rd=1 Thanks, Tom peregrineflier __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Earth Trojan asteroids
MOON Trojan objects exist. They are the Kordylewski clouds, small faint patches of dust, at the L4 and L5 points of the Earth-Moon system (not Earth-sun system). The Kordylewski clouds have been photographed, and have even been seen by the naked eye under total dark skies. They may be variable in their mass and integrated visual magnitude. Very little has been studied about them, very little is known about their possible variability, nobody has anything like a reflectance spectrum of the dust. They remain the closest things about which so little is known. They could well be the subject of study of any of you who wish to make a contribution to science. One thing is known: unless you are under skies so dark the Milky Way is a BRILLIANT band of light, and the Gegenschein is easy, and the zodiacal light is an obvious swath, unless you are under those kinds of dark skies, you have NO hope of seeing the Kordylewski clouds. Francis Graham --- [EMAIL PROTECTED] wrote: Hola Rob, Wouldn't that be = 2/3's (gibbous) phase = about 66% illumination, and a maximum average sky angle of a comfortable,high 60 degrees max observed angle (+/- the oscillation) ... checking they're equilateral triangles, though intuition might be wrong? Saludos, Doug En un mensaje con fecha 06/23/2005 6:21:15 PM Mexico Daylight Time, [EMAIL PROTECTED] escribe: Certainly astronomers have tried, but small objects at L4 and L5 would be hard to see due to a combination of range (150 million km), poorer phase angle, and a maximum sky elevation of perhaps 45 degrees at astronomical twilight -- lower when the sky is darker. It would be an interesting exercise to compute the maximum size an Earth Trojan could be and still have managed to go undetected. --Rob __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Discover Yahoo! Use Yahoo! to plan a weekend, have fun online and more. Check it out! http://discover.yahoo.com/ __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] impact melt - shocked chondrite and black chondrite
Hi Im just curous what is exactly a main difference between impact melted and shocked chondrites. I just have NWA2827 L5 S3-5/W1 shocked dark chondrite. I was really sure it will be Impact Melt, becouse have holes inside, long iron flakes, and was really hard and solid like glass. Also what mean that chondrite is black ? Eg. Ghubara is L5 black, xenolithic.Ofcourse its really black, but I think its not classified as black becouse its black colored. It must be something else. -[ MARCIN CIMALA ]-[ I.M.C.A.#3667 ]- http://www.Meteoryt.net [EMAIL PROTECTED] http://www.PolandMET.com [EMAIL PROTECTED] http://www.Gao-Guenie.com GSM +48(607)535 195 [ Member of Polish Meteoritical Society ] __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Earth Trojan asteroids
Hi, Thank you, Francis, for supplying the name that slipped through the cracks in my brain at three o'clock in the morning. I knew it started with K and was Slavic, but that's as far as my brain went, and my Googling finger was numb with overuse. They were a subject of derision when first announced (by Kordylewski) in the 1950's, and I'm glad to know they have been verified, a fact I will tuck into my brain somewhere away from the cracked areas. As for the sky conditions, it sounds like 8000 feet up in the Colorado Rockies to me. Unfortunately, I actually live dead center in the Mississippi River basin, with its 15,000 feet of perpetual summer haze deck, humid, roiling air, deep overcasts, visible photochemical smog, and occasional tornadoes. As for observer's luck, I have spent the last five lunar eclipses that were supposedly visible here standing in my front yard wondering behind which dark and glowering cloud bank it was happening. I have a world class collection of photographs of lunar eclipse colors as seen diffusely refracted by thick clouds. Thanks. Sterling K. Webb -- Francis Graham wrote: MOON Trojan objects exist. They are the Kordylewski clouds, small faint patches of dust, at the L4 and L5 points of the Earth-Moon system (not Earth-sun system). The Kordylewski clouds have been photographed, and have even been seen by the naked eye under total dark skies. They may be variable in their mass and integrated visual magnitude. Very little has been studied about them, very little is known about their possible variability, nobody has anything like a reflectance spectrum of the dust. They remain the closest things about which so little is known. They could well be the subject of study of any of you who wish to make a contribution to science. One thing is known: unless you are under skies so dark the Milky Way is a BRILLIANT band of light, and the Gegenschein is easy, and the zodiacal light is an obvious swath, unless you are under those kinds of dark skies, you have NO hope of seeing the Kordylewski clouds. Francis Graham --- [EMAIL PROTECTED] wrote: Hola Rob, Wouldn't that be = 2/3's (gibbous) phase = about 66% illumination, and a maximum average sky angle of a comfortable,high 60 degrees max observed angle (+/- the oscillation) ... checking they're equilateral triangles, though intuition might be wrong? Saludos, Doug En un mensaje con fecha 06/23/2005 6:21:15 PM Mexico Daylight Time, [EMAIL PROTECTED] escribe: Certainly astronomers have tried, but small objects at L4 and L5 would be hard to see due to a combination of range (150 million km), poorer phase angle, and a maximum sky elevation of perhaps 45 degrees at astronomical twilight -- lower when the sky is darker. It would be an interesting exercise to compute the maximum size an Earth Trojan could be and still have managed to go undetected. --Rob __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Discover Yahoo! Use Yahoo! to plan a weekend, have fun online and more. Check it out! http://discover.yahoo.com/ __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Mars Exploration Rover Update - June 24, 2005
http://marsrovers.jpl.nasa.gov/mission/status.html SPIRIT UPDATE: On the Move - sol 518-524, June 24, 2005 Spirit started this week by completing two remote sensing sols on June 18 and 19 (sols 518 and 519). The rover made observations with its panoramic camera, navigation camera, and miniature thermal emission spectrometer. Spirit completed a complex drive plan on June 20 (sol 520), and drove 38 meters (125 feet)! Spirit continued to drive on June 21 (sol 521) using visual odometry, and drove 9 meters (30 feet). On June 22 (sol 522), Spirit performed remote sensing including panoramic camera observations with 13 different filters, navigation camera observations of dust devils, panoramic and navigation camera images of the rear tracks, and miniature thermal emission spectrometer observations after the afternoon communication session with the Mars Odyssey orbiter. Spirit drove again on June 23 (sol 523) for 12 meters (39 feet). More driving is planned for June 24, 2005. Total odometry as of the end of sol 523 (June 23, 2005) is 4,530.51 meters (2.82 miles). __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] New AZ find main mass, AD
Hello List, As many of you know I made a new chondrite find in January here in Arizona and it has been classified as a L5, S1, W3 by Lora Bleacher at ASU. This meteorite will be in the next bulletin pending acceptance. I have been hunting the area for 6 months now and have found only 840 grams or so with the main mass being 465 grams. I was hoping to get into more and still may who knows, but I have put in some serious time hunting with some help with no more found and a very large area of very rough country has been pretty well covered both by eye and metal detecting... All that I have so far is from the same specimen and found in a 25 x 50 foot area (or so). I have decided to sell the main mass (465 grams) to help out the ol' household cash flow so I will offer it here to the first one to offer $5.00 per gram I will wait 3 days before I follow other avenues. Here is a link to a photo of the specimen next to the second largest (164 g). The buyer will also be told the name (proposed) of the new AZ find that I have not so far released as I am still hunting the area. There are several here at the list that can give you a reference if you have any questions about me: John B. John Gwilliam Larry Sloan and a few others. If interested please contact me off list and click the link for a photo. http://www.nuggetshooter.com/fimage/Newfinda1-13-2005.jpg Best Regards, Bill Southern IMCA 1552 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] There IS an Earth Trojan Asteroid (probably)!
Hi, In 1980, there was a search down to magnitude 14 that turned up nothing at the Earth's Trojan points. But there ARE Earth Trojans, or at least candidate objects. It takes a long series of observations to verify a true Trojan orbit, and they're doing that. In a search that is ongoing (slowly, one gathers) and that will scan 9 square degrees down to magnitude 22, there are good candidate objects. They slew the telescope at the Earth Trojan rate, stars are sstreak, regular asteroids are also streaks, but a Trojan is pretty much a dot or oval. photos of Earth Trojan candidates: http://www.astro.uwo.ca/~wiegert/etrojans/etrojans.html 3753 Cruithne and several other asteroids share the Earth's orbit but are not Trojans, but complicated horseshoes: http://www.astro.uwo.ca/~wiegert/3753/3753.html There's no such thing as Googling enough... Sterling K. Webb --- Matson, Robert wrote: Hi Darren, Sterling and List, Sterling pondered about Earth Trojans: Makes me wonder if somebody has ever tracked the orbital points 60 degrees ahead and behind the Earth... Wouldn't it be great to have Trojans of our own? Certainly astronomers have tried, but small objects at L4 and L5 would be hard to see due to a combination of range (150 million km), poorer phase angle, and a maximum sky elevation of perhaps 45 degrees at astronomical twilight -- lower when the sky is darker. It would be an interesting exercise to compute the maximum size an Earth Trojan could be and still have managed to go undetected. --Rob ___ __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
RE: [meteorite-list] Earth Trojan asteroids
Hi Sterling, Doug, and any other lurking List members still following the earth Trojan thread. A few comments related to the Earth Trojan magnitude calculation. Sterling wrote: Yes, phase would be about 2/3rds if it was spherical, but small bodies rarely are, so that value could be highly variable. The solar phase angle (the angle, as measured from the asteroid, between the sun and earth) is 60 degrees, which results in a noticeable drop in visual magnitude compared to how that same asteroid would appear at 1 a.u. and at opposition (despite the fact that in the latter case the asteroid is twice as far from the sun and thus receives 1/4 the sunlight!). For instance, if an asteroid at opposition and 1 a.u. from earth (2 a.u. from the sun) has an apparent magnitude of +18.0, that same asteroid moved to the earth-sun L4 or L5 point would dim to magnitude +18.64 for a typical slope parameter of G=0.15 -- a drop of a factor of 1.8 in brightness. What this means is that asteroids that wouldn't be missed at opposition could easily evade detection at L4/5. Sterling -- was this a typo? : Of course, we all know that Jupiter has Trojans (149 are known -- Jupiter has more of everything!) and even Nepture has one (known). There are at least 1783 Jupiter Trojans (7 of which were found by me within the last year :-). Cheers, Rob __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] There IS an Earth Trojan Asteroid (probably)!
3753 Cruithne and several other asteroids share the Earth's orbit but are not Trojans, but complicated horseshoes: http://www.astro.uwo.ca/~wiegert/3753/3753.html 3753 Cruithne does not share Earth's orbit: http://neo.jpl.nasa.gov/cgi-bin/db_shm?sstr=3753 Cruithne's orbit crosses the orbits of Venus and Mars, and comes near the orbit of Mercury. Earth's orbit is not like that at all. Cruithne and Earth do not share an orbit, and they are in separate orbits around the Sun. Cruithe's orbital period is 0.9966 years, which means it is very close to Earth's orbital period. Cruithne is also not a satellite of Earth like some people have claimed. Cruithne orbits the Sun, not the Earth. Ron Baalke __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] New AZ find main mass, AD
Hello Bill, Can you show us a picture of the interior of your new meteorite? Seems like I saw a picture of a part slice a while back but can't remember where to find it. Also, is there a possibility that you will be offer slices of this new Arizona chondrite? I know that several of us that specialize in Arizona meteorites would like to own one. Congratulations again on your new find. I'm thinking it might be worth the price just to get the proposed name so I can narrow down wher to hunt for more;-) Best, John Gwilliam At 05:20 PM 6/24/2005, Bill Southern wrote: Hello List, As many of you know I made a new chondrite find in January here in Arizona and it has been classified as a L5, S1, W3 by Lora Bleacher at ASU. This meteorite will be in the next bulletin pending acceptance. I have been hunting the area for 6 months now and have found only 840 grams or so with the main mass being 465 grams. I was hoping to get into more and still may who knows, but I have put in some serious time hunting with some help with no more found and a very large area of very rough country has been pretty well covered both by eye and metal detecting... All that I have so far is from the same specimen and found in a 25 x 50 foot area (or so). I have decided to sell the main mass (465 grams) to help out the ol' household cash flow so I will offer it here to the first one to offer $5.00 per gram I will wait 3 days before I follow other avenues. Here is a link to a photo of the specimen next to the second largest (164 g). The buyer will also be told the name (proposed) of the new AZ find that I have not so far released as I am still hunting the area. There are several here at the list that can give you a reference if you have any questions about me: John B. John Gwilliam Larry Sloan and a few others. If interested please contact me off list and click the link for a photo. http://www.nuggetshooter.com/fimage/Newfinda1-13-2005.jpg Best Regards, Bill Southern IMCA 1552 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] There IS an Earth Trojan Asteroid (probably)!
Hi, Ron, List, The web page I cited was put up by: Paul Wiegert, UWO Physics Dept, Astronomy Group, The University of Western Ontario, London, Ontario Canada; Kimmo Innanen, Dept. of Physics and Astronomy, York University, Toronto, Ontario, Canada; and Seppo Mikkola, Tuorla Observatory, University of Turku, Finland, on 3763 Cruithne. http://www.astro.uwo.ca/~wiegert/3753/3753.html This web site is apparently based on their announcement paper in (Nature, 1997, 387, 685-686. I chose the single word share from the following early introductory paragraph: The near-Earth asteroid 3753 Cruithne is in an unusual orbit about that of the Earth, one which is known in the lingo of celestial mechanics as being co-orbital with the Earth (meaning it SHARES [my emphasis] the Earth's orbit with it) and, more particularly, as being of the horseshoe type. Horseshoe orbits are named because of their shape in a reference frame which corotates with their accompanying planet, and have been known theoretically for many years. A corotating frame just means one in which the viewer orbits along with one of the planets, in this case the Earth. It is analogous to imagining oneself floating above the north pole of the Earth as our planet goes around its orbit, and watching the path the asteroid from this vantage point. By looking at the asteroid in this way its unusual behaviour becomes apparent: it is much more difficult to distinguish when viewed in a non-rotating frame. When Cruithne is viewed in the ROTATING frame of reference: Cruithne is on an spiraling horseshoe orbit... but its behaviour is even stranger. First, it is an even more tightly-wound spiral, with kidney-bean shaped loops. Secondly, one part of the horseshoe actually overlaps the position of the Earth when viewed from above. A series of four frames (to be read left to right) showing a time lapse of Cruithne's horseshoe is shown below. Note again that Cruithne's horseshoe is composed of tightly wound kidney-bean shaped spirals which are almost impossible to distinguish individually in the picture. Remember, there are two types of motion going on: 1) every year, the asteroid traces out a kidney bean, 2) over time, this kidney bean drifts along the Earth's orbit, tracing out a spiral which, when complete (after 385 yrs) fills in an overlapping horseshoe. They do not claim the Cruithne orbits the Earth in the direct sense, and indeed their multi-colored orbital diagrams show the same elements of eccentricity and inclination, etc. (see below) as the NASA page you cite. Unfortunately, my computer's MicroSoft mind has difficulties with JAVA applets for some reason, and won't execute the one on the page you cite, so I can not get it to visualize and therefore cannot compare the two directly. Even Wiegert and company regard Cruithne as a very strange duck. They have an MPEG movie showing it in the heliocentric frame of reference, about which they say: Note the highly eccentric and inclined... orbit of Cruithne, and the lack of obvious connection to the Earth, except that they both go around the Sun in about the same amount of time. This is then followed by another MPEG movie in the rotating Earth-centric frame of reference: After a few orbits, the lines of sight connecting Cruithne to the Earth are drawn in green. Note that, though they both go around the Sun, both are always on the same side of the Sun. Then, the Earth will begin picking up the lines of sight, constructing the apparent path of Cruithne as seen from the rotating Earth. Their motions are such that Cruithne appears to perform a kidney-shaped loop around the Earth. Though the asteroid thus appears to orbit the Earth, this is a result of the frame of reference we are using. Also note that the presence of the Earth at the centre of the kidney is simply a result of their mutual synchronization: the Earth is lined up with the asteroid and Sun when the asteroid is at perihelion (its closest approach to the Sun)... Because the asteroid and the Earth do not go around in exactly the same amount of time (the asteroid currently goes around slightly faster than the Earth), the position of the kidney-shaped loop relative to the Earth varies over time. If the asteroid and the Earth were not in a special arrangement, the Earth would face potential danger as the asteroid drifted inexorably towards our planet. However, in their current relationship, the kidney's direction of drift is reversed every time it approaches the Earth. See, I said it was a COMPLICATED horseshoe. The webpage which I cited is also cited on the the Lunar and Planetary Laboratory asteroids page in a positive sense (as in, look at this; it's truly weird.): http://seds.lpl.arizona.edu/nineplanets/nineplanets/asteroids.html Further, NASA's own site http://impact.arc.nasa.gov/ on the NeoDys Object List points to the same source: The motion of this object is quite interesting. See:
