# Do any spacecraft orbit Mars on a polar orbit?

Polar orbit is quite common for observation satellites. It seems logic to put probes whose goal is to observe Mars (pictures, cartography) on a polar orbit around Mars. But traveling from Earth to any Mars orbit is difficult enough to avoid targeting any orbit whose inclination is far away from the ecliptic.

Have we sent any observation satellites or any other kind of probe designed to orbit over Mars on a polar orbit?

• The premise is incorrect, and even backwards. The approach declination actually prevents orbit inclinations below that declination, for a single-burn orbit insertion. Targeting orbit inclinations greater than the approach declination, up to polar, are all equally easy (or equally difficult, depending on how you look at it). – Mark Adler Aug 21 '15 at 16:54