(meteorobs) satellite question
Marco Langbroek
marco.langbroek at wanadoo.nl
Mon Jan 4 14:30:07 EST 2010
Op 4-1-2010 19:27, Mike Hankey schreef:
> Are there slower moving satellites that could be present in a single
> field of view for a 20 minute time frame?
HEO satellites (HEO=Highly Elliptical Orbit: aka 'Molniya' orbits) do exactly
this. They make approximately 2 orbit revolutions a day, and near their apogeum
linger on in a small area of the sky for hours.
You didn't mention your FOV, but a typical HEO near apogeum moves no more than
0.1 degree/minute. At apogeum, they can be at very high declinations north or
south (usually north).
As Chris mentioned, there is also the geostationary sats. These are stable in
azimuth and altitude. It depends a bit on where you are but a geostationary sat
should have a stable declination in the order of -5 to -7 degree south, i.e.
just south of the celestial equator.
- Marco
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Dr Marco Langbroek - SatTrackCam Leiden, the Netherlands.
e-mail: sattrackcam at wanadoo.nl
Cospar 4353 (Leiden): 52.15412 N, 4.49081 E (WGS84), +0 m ASL
Cospar 4354 (De Wilck): 52.11685 N, 4.56016 E (WGS84), -2 m ASL
SatTrackCam: http://home.wanadoo.nl/marco.langbroek/satcam.html
Station (b)log: http://sattrackcam.blogspot.com
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