Tags: Planet.

4155 Watanabe (1987 UB1) is a main-belt asteroid discovered on October 25 1987 by Seiji Ueda and Hiroshi Kaneda at Kushiro.Photometric observations of this asteroid collected during 2006 show a rotation period of 4.4972 ± 0.0006 hours with a brightness variation of 0.19 magnitude.

apoapsis (km)
4.51636e+11
orbital period (μ)
1.19709e+08
periapsis (km)
2.76008e+11
absolute magnitude
12.7
discovery date
1987-10-25
discoverer
Hiroshi Kaneda, Seiji Ueda
epoch
May 14 2008
former name
1987 UB1

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