Deimos

Deimos (Mars II) is a moon of Mars, discovered by Asaph Hall in 1877. It orbits Mars every 30 hours and shines at about magnitude 12.4.

Mars's smaller, outer moon — easier than Phobos because it strays farther from the planet's glare.

Other moons of Mars: Phobos.

Open AstroPilot to see where Deimos is next to Mars tonight and how easy it is with your telescope.