Tags: Planet.

4971 Hoshinohiroba (1989 BY) is a main-belt asteroid discovered on January 30 1989 by Fujii and Watanabe at Kitami.

apoapsis (km)
4.20254e+11
orbital period (μ)
1.16146e+08
periapsis (km)
2.92956e+11
absolute magnitude
13.1
discovery date
1989-01-30
discoverer
Kazuro Watanabe, Akira Fujii
epoch
May 14 2008
former name
1989 BY

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