How much of a discrepancy should I see between Orbitron and the online tracker at http://www.n2yo.com/ ??
I notice the Lon/Lat of the ISS's location is a few minutes different between the two.
Thanks, RoD KD0XX
Hi Rod,
I notice the Lon/Lat of the ISS's location is a few minutes different between the two.
It may depend on which keplerian elements you're using. ISS boosted its orbit up an additional ~5 miles or so this week. If you are using pre-boost elements then ISS will appear later than predicted because of the higher orbit.
-- 73 de JoAnne K9JKM k9jkm@amsat.org
JoAnne, I'm using Spacetrack.org for my keps/TLE's so I would assume (yea, I know:-) they are accurate. I will check the HST since it should not have changed much.
Thanks, RoD KD0XX
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org]On Behalf Of JoAnne Maenpaa Sent: Thursday, August 24, 2006 5:40 PM To: Amsat-Bb Subject: [amsat-bb] Re: Orbitron vs http://www.n2yo.com/
Hi Rod,
I notice the Lon/Lat of the ISS's location is a few minutes different between the two.
It may depend on which keplerian elements you're using. ISS boosted its orbit up an additional ~5 miles or so this week. If you are using pre-boost elements then ISS will appear later than predicted because of the higher orbit.
-- 73 de JoAnne K9JKM k9jkm@amsat.org
_______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Are you sure you are using the latest keplerian data for Orbitron? Can you please compare with other tools?
Thanks! 73s de Chip N2YO
----- Original Message ----- From: "Stargate" stargatesg1@verizon.net To: "Amsat-Bb" amsat-bb@amsat.org Sent: Friday, August 25, 2006 12:18 AM Subject: [amsat-bb] Orbitron vs http://www.n2yo.com/
How much of a discrepancy should I see between Orbitron and the online tracker at http://www.n2yo.com/ ??
I notice the Lon/Lat of the ISS's location is a few minutes different between the two.
Thanks, RoD KD0XX
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
participants (3)
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Ciprian Sufitchi -
JoAnne Maenpaa -
Stargate