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CX2SA > SATDIG 27.11.11 21:04l 85 Lines 2809 Bytes #999 (0) @ WW
BID : AMSATBB6642
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Subj: AMSAT-BB-digest V6 642
Path: IZ3LSV<IK2XDE<PY1AYH<PY1AYH<CX2SA
Sent: 111127/2002Z @:CX2SA.LAV.URY.SA #:40721 [Minas] FBB7.00e $:AMSATBB6642
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: [sarex] Last chances to hear ARISSat-1 are rapidly
approaching. (Thomas Frey)
----------------------------------------------------------------------
Message: 1
Date: Sun, 27 Nov 2011 18:23:42 +0100
From: Thomas Frey <th.frey@xxxxxxx.xx>
To: APBIDDLE@xxxxxxx.xxx
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>, SAREX-BB <SAREX@xxxxx.xxx>, "Alan
P. Biddle" <APBIDDLE@xxxxxx.xxx>
Subject: [amsat-bb] Re: [sarex] Last chances to hear ARISSat-1 are
rapidly approaching.
Message-ID: <4ED2721E.3080408@xxxxxxx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Alan P. Biddle schrieb:
> All,
>
> A reminder that if you have been putting off working through the ARISSat-1
> repeater, receiving SSTV pictures, or submitting telemetry, the next few
> weeks will be your last opportunity to be a part of this satellite's
> history. Since deployment in August, ARISSat-1 has descended about 60 km,
> and is currently losing more than 1.5 km per day. The rapid rate is
> partially the result of the recent solar activity on the atmosphere,
> significantly increasing the drag. The predictions by several individuals
> and groups are all converging toward a reentry in January or February, 2012.
> Heating will become significant before then. Remember, good telemetry in
> this period provides invaluable information to the engineering team, to be
> used in future projects.
>
> The orbit period changes about 30 seconds per day, and that will increase
> steadily. Be certain to update your tracking program Keps from Space-Track
> or CelesTrak before each pass. They issue revised versions 3-5 times daily.
> As the descent continues, this will become even more critical to copying the
> telemetry beacon, especially unattended.
>
> 73s,
>
> Alan
> WA4SCA
>
>
>
>
Hello All
With the program SatEvo by Alan Pickup I calculated the re-entry date
December 27 2011 with Kepler data
RADIOSCAF-B (KEDR)
1 37772U 98067CK 11331.09098689 .00238223 00000-0 11065-2 0 3555
2 37772 051.6354 054.9663 0005738 050.5984 016.1987 15.82161046 18004
I also calculated an apogee hight of 328 km and a perigee hight of
320 km.
--
Mit freundlichen Gr?ssen, Regards, 73
Thomas Frey, HB9SKA
______________________________________________________________________
Thomas Frey, Holzgasse 2, CH-5242 Birr, Tel. + Fax: 056 444 93 41
http://home.datacomm.ch/th.frey/
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End of AMSAT-BB Digest, Vol 6, Issue 642
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