NASA spacecraft captured UFO above the Martian surface?

The latest image from the Thermal Emission Imaging System (THEMIS) on board the Mars Odyssey spacecrafts shows a strange unknown object hovering above or standing on the Mars surface.

At first glance it looks like it is the shadow of the Mars Odyssey spacecraft, but then again, on each side of the object you can clearly see what looks like two antennas or maybe it’s a landing gear.

Image below shows the original Odyssey spacecraft in comparison with the unknown object.

Is it possible that THEMIS photographed the shadow of the Odyssey spacecraft or it accidently photographed a Unidentified ‘Flying’ Object?

Link image:
Site Mars Odyssey-Themis
Image credit NASA/JPL/ASU