Astrometric observation of Phobos
Astrometric observation of Phobos
Astrometric observation performed using the Super Resolution Channel (SRC) of the High Resolution Stereo Camera (HRSC). In the foreground, the between 18.2 and 26.0-kilometre Martian moon, Phobos; in the background, a reference star (circled in red) used to accurately determine the position. (Orbit 17,746, 8 January 2018).