153P/Ikeya–Zhang
Comet
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Comet Ikeya–Zhang is a comet discovered independently by two astronomers from Japan and China in 2002. It has by far the longest orbital period of the numbered periodic comets. It was last observed in October 2002 when it was about 3.3 AU from the... Wikipedia
Radius: 6.2137 mi
Orbital period: 366.51 yr
Discoverers: Kaoru Ikeya and Zhang Daqing
Aphelion: 101.92 AU
Discovery date: February 1, 2002
Max. orbital speed: 59 km/s (2002)
Min. orbital speed: 0.29 km/s; (2182-Nov-24)