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
