Earth Mars has two smaller moons - both equally of which can be captured asteroids. Deimos and Phobos are very difficult to discover other than in big telescopes because of getting so near Mars. Moons are shown by dimensions. Kerberos was uncovered in 2011, and Styx was found in 2012, https://best-moons94826.blogsvila.com/34905168/how-much-you-need-to-expect-you-ll-pay-for-a-good-bestmoons