Using a U.S. Navy telescope in 1877, Asaph Hall discovered the 2 moons of Mars & named them this
[DOC] [TLE] Moons of Mars - Wikipedia [PAR] Asaph Hall discovered Deimos on 12 August 1877 at about 07:48 UTC and 
Phobos on 18 August 1877, at the US Naval Observatory in Washington, D.C., at 
about 09:14 GMT (contemporary sources, using the pre-1925 ... but due to bad 
weather, he could not definitively identify them until later.