[amsat-bb] Observations on tracking programs

[B J]

On 9/2/18, Wendy and Terry Osborne <wandtosborne at gmail.com> wrote:
> Hi Folks,
>
> I have recently been following AO-91 with a selection of tracking programs
> and confirming
> the results with observations of the downlink.
>
> Using the same QTH location and Keps, I found the following:
> The AMSAT-NA online tracking page is pretty accurate. See:
> https://www.amsat.org/track/index.php
> Heavens-above.com is also pretty good. See: https://www.heavens-above.com
> SatPC32, Orbitron, InstantTrack, and Quiktrak are pretty good and give the
> same results as the “On-Line” trackers.
>
> Nova is about 5 minutes ahead.
> GPredict is about 5 minutes behind.
>
> Has anyone else noticed this?

<snip>

I've never worked AO-91, so I can't comment on that.  I run Gpredict
on a Linux ThinkPad and i found that it's been accurate for satellites
such as FO-29.

73s

Bernhard VA6BMJ