46P/Wirtanen
Comet
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46P/Wirtanen is a small short-period comet with a current orbital period of 5.4 years. It was the original target for close investigation by the Rosetta spacecraft, planned by the European Space Agency, but an inability to meet the launch window... Wikipedia
Radius: 1,968.5′
Discovered: January 17, 1948
Discoverer: Carl A. Wirtanen
Last perihelion: July 9, 2013
Orbital period: 1,987 days
Earth MOID: 0.071 AU (10,600,000 km)
Synodic rotation period: 8.9 hours