(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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