Tags: Planet.

12242 Koon (1988 QY) is a Jupiter Trojan discovered on August 18 1988 by C. S. Shoemaker and E. M. Shoemaker at Palomar Observatory.

apoapsis (km)
8.14855e+11
orbital period (μ)
3.63719e+08
periapsis (km)
7.11742e+11
absolute magnitude
10.5
discovery date
1988-08-18
discoverer
Carolyn S. Shoemaker, Eugene Merle Shoemaker
epoch
May 14 2008
former name
1988 QY

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