Deimos, or Mars II


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.

Image information
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
Filter None
Exposure 10 × 20s subs, median-stacked
Centre of image RA 01h10m20.7s  Dec 04°33'31"
Image dimensions 5.2 arcmin × 3.5 arcmin