85P/Boethin

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85P/Boethin
Discovery
Discovered by: Leo Boethin
Discovery date: January 4, 1975
Alternate designations: 85P/1975 A1; 1975 I; 1975a; 85P/1985 T2; 1986 I; 1985n
Orbital characteristics A
Epoch: January 10, 1986 (JD 2446440.5)
Aphelion distance: 20.7560 AU
Perihelion distance: 1.1143 AU
Semi-major axis: 11.67560 AU
Eccentricity: 0.7777
Orbital period: 11.225 a
Inclination: 5.756°
Last perihelion: January 16, 1986
Next perihelion (predicted): June 29, 2008

Comet Boethin (or 85P/Boethin) is a periodic comet and the future target of NASA's Deep Impact comet-exploration mission; the plan is to fly the spacecraft by the comet in December of 2008.

The comet was discovered in 1975 by Reverend Leo Boethin. Although the comet was next expected at perihelion on 1997 April 17, no observations were reported.

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