Mars has two natural satellites (and quite a number of artificial ones in recent years) both of which are captured asteroids and both of which orbit very close to the planet. The smaller of the two is Deimos and which be seen here when it was close to elongation. Phobos, being much closer to the planet on this occasion, is completely swamped by the glare of scattered light from Mars.
|Date and time of observation||2020-10-22 23:41 UT|
|Telescope||0.4m f/6.5 Dilworth-Relay|
|Camera||Starlight Xpress Trius-PRO SX814 CCD|
|Exposure||10 × 20s subs, median-stacked|
|Centre of image||RA 01h10m20.7s Dec 04°33'31"|
|Image dimensions||5.2 arcmin × 3.5 arcmin|