Tags: Planet.

8581 Johnen (1996 YO2) is a main-belt asteroid discovered on December 28 1996 by N. Sato at Chichibu.

apoapsis (km)
4.42303e+11
orbital period (μ)
1.50641e+08
periapsis (km)
4.0592e+11
absolute magnitude
13.4
discovery date
1996-12-28
discoverer
Naoto Sato
epoch
May 14 2008
former name
1996 YO2

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