Well, at least you can see it, barely separated from the star. I do some asteroid chasing (mostly follow-up astrometric measurements of newly discovered near-earth asteroids), and this is a common problem. In fact, EL61 is currently in a sparse area of the sky, near the galactic pole. You should see what happens when I try to find an object moving through the plane of the Milky Way!
-John --- Robert Vanderbei <[EMAIL PROTECTED]> wrote: > Hi John, > > You are right. How unlucky can I be. I'll have to try again sometime. > > --Bob > > John Mahony wrote: > > >It looks like you got it, but the situation is not as simple as it looks. > At > >the time of your picture, 2003 EL61 (mag 17.5) was almost exactly at the > >location of a slightly brighter mag 17.1 star- the separation is only about > 4". > > But the time of your CdC screen capture is about 1 hour later, by which > time > >2003 EL61 was so close to the star that the asteroid symbol in CdC covers > the > >star. > >You might also need to use the "show more stars" icon to show the fainter > >stars. > > > >Look closely at the image and you'll see two objects at the location > indicated > >by CdC. The slightly brighter object on the left is the star. 2003 EL61 is > >fainter, a few pixels to the right and slightly up. > > > >If you "show more stars" in CdC, you'll also notice a mag 17.7 star barely > >showing in your image about 38" north and slightly east (left) of 2003 EL61 > and > >the first star. > > > >-John > > > > > > > > > >--- Robert Vanderbei <[EMAIL PROTECTED]> wrote: > > > > > > > >>My understanding is that one of the 3 new planets announced a week or > >>two ago is designated > >>2003EL61. I got ephemeris info from the Cartes-du-Ciel user's group. > >>Last night I imaged the > >>correct patch of sky. From the ephemeris file, the object is listed as > >>mag 17.5. > >>If that is correct, then I think I successfully imaged it (just barely). > >> > >>The image and the corresponding sky chart are posted here: > >> > >>http://www.princeton.edu/~rvdb/images/NJP/2003EL61.html > >> > >>It was rather low in the early evening and so there was lots of NJ sky > >>glow---not a very pretty > >>image. Nonetheless, it seems that I got it. > >> > >>And, not to waste the first clear evening in a long time, I grabbed a > >>snapshot of M92 too: > >> > >>http://www.princeton.edu/~rvdb/images/NJP/m92.html > >> > >>-- Bob > >>Robert J. Vanderbei > >>http://www.princeton.edu/~rvdb > >> > >> > >> > >> > >>Yahoo! Groups Links > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > > > > > > > > > >____________________________________________________ > >Start your day with Yahoo! - make it your home page > >http://www.yahoo.com/r/hs > > > > > > > > > > > >Yahoo! Groups Links > > > > > > > > > > > > > > > > > > -- > Robert J. Vanderbei > http://www.princeton.edu/~rvdb > > > > > > Yahoo! Groups Links > > > > > > > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/1.XolB/TM --------------------------------------------------------------------~-> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/skychart-discussion/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
