Tags: Planet.

21148 Billramsey (1993 HN1) is a main-belt asteroid discovered on April 16 1993 by C. S. Shoemaker and E. M. Shoemaker at Palomar.

apoapsis (km)
4.77339e+11
orbital period (μ)
1.39075e+08
periapsis (km)
3.2689e+11
absolute magnitude
14.1
discovery date
1993-04-16
discoverer
Carolyn S. Shoemaker, Eugene Merle Shoemaker
epoch
May 14 2008
former name
1993 HN1

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