[amsat-bb] AMSAT-OSCAR 85 TLEs

Jerry Buxton n0jy at amsat.org
Sat Oct 10 20:38:05 UTC 2015


The first keps we got were based on the OPMs at the time of P-POD
deployment per the telemetry.
We will likely not receive any others until NORAD starts tracking them,
perhaps in a few days.  Still, those will not be available to the
general public (from what I understand), they will be posted in our
AMSAT keps when we get them.

Thank you for the information on the frequency drift!

Jerry Buxton, NØJY

On 10/10/2015 15:31, Nico Janssen wrote:
> All,
> Hours after the launch of AO-85 (ex FOX-1A) the first TLEs for 8 of
> the 13 launched Cubesates were published under GRACE 1 through 8.
> I have not seen any updates since launch day.
> Today around 18:00 UTC AO-85 was 29 s early compared to the TLE set for
> GRACE 8, which is currently leading the group. AO-85 is 41 s early
> compared to the TLE set for GRACE 2, that most people will be using now.
> So either the early TLEs were not very accurate yet, or the TLEs for
> AO-85 were not yet determined and therefore not available in the
> initially measured batch. Let's hope we get updated TLEs for all 13
> Cubesats soon.
> BTW, there appears to be a small temperature drift on the downlink
> signal frequency of AO-85 that may be noticable when using automatic
> doppler correction.
> 73,
> Nico PA0DLO
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