Nova has two algorithms for computing the location of the satellites. Try the other algorithm.
73, Steve N9IP -- Steve Belter, seb@wintek.com
On Sep 2, 2018, at 8:28 AM, Don KB2YSI kb2ysi@gmail.com wrote:
Make sure the keps are updated, Aldo the clock but I assume they are running on the same computer so that is unlikely to be a problem.
73, Don KB2YSI
On Sun, Sep 2, 2018, 02:10 B J va6bmj@gmail.com wrote:
On 9/2/18, Wendy and Terry Osborne wandtosborne@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:
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 _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb