Tags: Planet.

4959 Niinoama (1991 PA1) is a main-belt asteroid discovered on August 15 1991 by Natori and Urata at Yakiimo.Photometric observations of this asteroid collected during 2008 show a rotation period of 4.73 ± 0.01 hours with a brightness variation of 0.32 ± 0.04 magnitude.

apoapsis (km)
4.73178e+11
orbital period (μ)
1.76134e+08
periapsis (km)
4.67194e+11
absolute magnitude
10.8
albedo
0.1082
discovery date
1991-08-15
discoverer
Takeshi Urata, Natori
epoch
May 14 2008
former name
1991 PA1

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