Tags: Planet.

14420 Massey (1991 SM) is a main-belt asteroid discovered on September 30 1991 by R. H. McNaught at Siding Spring Observatory.

apoapsis (km)
5.01254e+11
orbital period (μ)
1.64965e+08
periapsis (km)
3.9992e+11
absolute magnitude
12.2
discovery date
1991-09-30
discoverer
Robert H. McNaught
epoch
May 14 2008
former name
1991 SM

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