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Old 02-01-2013, 10:08 AM
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mithrandir (Andrew)
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Join Date: Jan 2009
Location: Glenhaven
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Quote:
Originally Posted by jakob View Post
Stuart,
It looks like a Satellite but it was taken at 1am with the sun 33deg below the horizon. Can a salellite be visible under these conditions?

Also SN does not show a satelite passing at that time.

Any other comments?
There are lots of geostationary satellites that pass through Orion. These are in a high enough orbit (35786Km) that at some times of the year (notably around the solstices in June and December) they will be out of the Earth's shadow all night. At that distance a bit of trigonometry gives the Earth shadow a radius about 6200Km and puts the satellite 15000Km south of the ecliptic.
Does SN have all the satellites or just ones bright enough to see visually?
CalSky will let you search for much dimmer ones.
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