Re: Atlas 5/GPS 2F11 visible from Europe

From: Stefan Biereigel via Seesat-l <seesat-l_at_satobs.org>
Date: Sat, 31 Oct 2015 18:06:06 +0100
For me, Atlas IV showed superb naked-eye visibility as soon as it left the area of sky
that was still lit by the sunset. It was visible from ~16.35 until ~16.39, just before it
got low enough to be obstructed. Brightness was higher than Vega for the main duration of
visibility.

Observed in central/east Germany.

Regards,
Stefan


Am 31.10.2015 um 17:51 schrieb Leo Barhorst via Seesat-l:
> Using CeesĀ“ search TLE I gave it a try to spot the just launched Atlas 5
> rocket
> with the GPS 2F11 satellite.
> It was predicted to pass just above Polaris, so I had a good idea were to
> look.
> However nothing was seen due to the still too bright sky.
> 
> Now preparing for the regular observations.
> 
> Regards
> Leo
> 
> 
> 2015-10-31 16:13 GMT+01:00 C. Bassa via Seesat-l <seesat-l_at_satobs.org>:
> 
>> An Atlas 5 is scheduled to launch GPS 2F11 from Cape Canaveral
>> today. The window opens at 16:13UT. The Centaur upper stage
>> places itself and the payload in a transfer orbit which passes
>> over Europe about 20 minutes after launch and may be visible to
>> observers.
>>
>> The elset below is estimated from the GPS 2F11 mission overview
>> (
>> http://www.ulalaunch.com/uploads/docs/Mission_Booklets/AV/av_gpsiif11_mob.pdf
>> )
>> and constraints from previous GPS 2F launches with Atlas 5.
>>
>> GPS 2F11 Transfer orbit
>> 1 84001U 15900A   15304.81302044  .00000000  00000-0  00000-0 0    06
>> 2 84001  54.9889 183.9204 6029017  96.1467 180.1187  4.05702263    08
>>
>> Good luck,
>>    Cees
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Received on Sat Oct 31 2015 - 12:06:39 UTC

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