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Discovered byJames E. Gunn
Discovery dateOctober 17, 1970
1969 II; 1976 III; 1982 X;
1989 XI;
Orbital characteristics A
EpochMarch 6, 2006
Aphelion4.737 AU
Perihelion2.444 AU
Semi-major axis3.59 AU
Orbital period6.803 a
Last perihelionOctober 16, 2017[1]
March 2, 2010
May 11, 2003
Next perihelion2025-Jun-16[2]

65P/Gunn is a periodic comet in the Solar System which has a current orbital period of 6.79 years.

It was discovered on 11 October 1970 by Professor James E. Gunn of Princeton University using the 122-cm Schmidt telescope at the Palomar Observatory. It had a low brightness of magnitude 16 plus which improves to 12 under favourable conditions.

The comet is a short-period comet, orbiting the Sun every 6.79 years inside the main asteroid belt between the orbits of the planets Mars and Jupiter.[3]

On 4 February 1970 the comet passed 0.015 AU (2,200,000 km; 1,400,000 mi) from Ceres.[4]

See also[edit]


  1. ^ Syuichi Nakano (2010-06-19). "65P/Gunn (NK 1941)". OAA Computing and Minor Planet Sections. Retrieved 2012-02-18.
  2. ^ MPC
  3. ^ "WISE Catches Comet 65P/Gunn". Jet Propulsion Laboratory. Retrieved 26 November 2014.
  4. ^ "JPL Close-Approach Data: 65P/Gunn" (2012-1-25 last obs). Retrieved 2012-02-23.

External links[edit]

Numbered comets
65P/Gunn Next
66P/du Toit