[amsat-bb] Re: ARISSat-1 RADIOSKAF-V KEDR
Ferrll, There are at least a few more days from an orbital standpoint, and so far the electronics are holding up. BOTE calculation gives a descent rate approaching 5 km/day, and rapidly increasing. Just remember that as a practical matter it will be impossible to have Keps with the accuracy we are use to having, because they are literally changing significantly from orbit to orbit. Leave a wide window on the window. ;) Alan WA4SCA -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Farrell Winder Sent: Monday, December 26, 2011 9:04 AM To: AMSAT Subject: [amsat-bb] ARISSat-1 RADIOSKAF-V KEDR Does anyone have a prediction of the lowest altitude for ARISSat-1 and still have it be functional? With the latest Keps I show its altitude around 155 miles. Depending of signal strength on today's Cincinnati passes I might try another SSTV via the Transponder adjusting my Tx to receive on 145.930 MHz (+/- depending on location). Hope others will also try with voice and video. Farrell Winder, W8ZCF Cincinnati, Ohio ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: ARISSat-1 RADIOSKAF-V KEDR
Farrell, An often used rule-of-thumb in astrodynamics for decay height is about 140 kilometers which is about 87 miles. A satellite that gets that far into the atmosophere will burn up during it's final orbit in short order! I would recommend you just keep trying until you are sure the satellite is no longer in orbit. I will post an updated decay prediction on AMSAT-BB this afternoon for operator planning purposes. Jim, N8OQ ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: ARISSat-1 RADIOSKAF-V KEDR
Another good pass on the East Coast USA in FN42 ... Downloaded two images and a really good long recording at 1822 UTC 59 degree elevation. 73 Craig, W1MSG -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Alan P. Biddle Sent: Tuesday, December 27, 2011 9:21 AM To: 'Farrell Winder'; 'AMSAT' Subject: [amsat-bb] Re: ARISSat-1 RADIOSKAF-V KEDR Ferrll, There are at least a few more days from an orbital standpoint, and so far the electronics are holding up. BOTE calculation gives a descent rate approaching 5 km/day, and rapidly increasing. Just remember that as a practical matter it will be impossible to have Keps with the accuracy we are use to having, because they are literally changing significantly from orbit to orbit. Leave a wide window on the window. ;) Alan WA4SCA amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: ARISSat-1 RADIOSKAF-V KEDR
Hi Jim, Looking forward to your ARISSat-1 decay posting. My plots suggest the bird will be down to 140km around 11th of January, provided the SFI and A index stay similar to current values 73 John G7HIA From: DeYoung James deyoung_ja...@yahoo.com To: amsat-bb amsat-bb@amsat.org Sent: Tuesday, 27 December 2011, 14:05 Subject: [amsat-bb] Re: ARISSat-1 RADIOSKAF-V KEDR Farrell, An often used rule-of-thumb in astrodynamics for decay height is about 140 kilometers which is about 87 miles. A satellite that gets that far into the atmosophere will burn up during it's final orbit in short order! I would recommend you just keep trying until you are sure the satellite is no longer in orbit. I will post an updated decay prediction on AMSAT-BB this afternoon for operator planning purposes. Jim, N8OQ ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
