Gso

[Crashonaut]

What would geosync orbit be for kerbin, and the other planets?

[elkar]

2868 km, its of course different for different planets and some cannot be maintained coz they are too far out of SOI.

Just look at KSP wiki, its all there.

[Kimberly]

Any orbit with an orbital period of 6 hours. For Kerbin, like Elkar said, that's an orbit with a semi-major axis 2868.75km. You'll probably want to use a plug-in like Kerbal Engineer, which will show you your orbital period; it's far easier to get a slightly eccentric orbit that has the right period than a perfectly circular orbit at the right altitude.

Note that a geostationary orbit, which remains in exactly the same position in the sky, also requires an inclination of zero degrees relative to the equator. If your orbit is inclined a bit, then when viewed from Kerbin your satellite will have an analemma, moving across the sky during its orbit although remaining over roughly the same spot.

Edited July 12, 2013 by Kimberly