[amsat-bb] Re: ARISSat-1 RADIOSKAF-V KEDR

John Heath g7hia at btinternet.com
Tue Dec 27 14:23:02 PST 2011

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_james at yahoo.com>
To: amsat-bb <amsat-bb at amsat.org> 
Sent: Tuesday, 27 December 2011, 14:05
Subject: [amsat-bb] Re: ARISSat-1 RADIOSKAF-V KEDR

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
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