89P/Russell is a periodic comet in the Solar System with a current orbital period of 7.28 years.[3]

89P/Russell
Discovery
Discovered byK. S. Russell at Siding Spring Observatory, New South Wales, Australia
Discovery date28 September 1980
Orbital characteristics A
Epoch27 June 2015
Aphelion5.281 AU
Perihelion2.2236 AU
Semi-major axis3.7566 AU
Eccentricity0.4081
Orbital period7.26 yr
Inclination12.06°
Last perihelion14 December 2016[1]
Next perihelion2024-Mar-26[2]

It was discovered on a photographic plate by Kenneth Russell of Siding Spring Observatory in New South Wales, Australia on 28 September 1980. Brightness was estimated at a magnitude of 17. The elliptical orbit calculated by Brian G. Marsden gave a perihelion date of 19 May 1980 and an orbital period of 7.12 years.

It has been observed on each subsequent apparition, most recently in 2009. The next perihelion is computed as 14 December 2016.

See alsoEdit

ReferencesEdit

  1. ^ "89P/Russell 2". Retrieved 15 April 2015.
  2. ^ "89P/Russell Orbit". Minor Planet Center. Retrieved 2017-04-07.
  3. ^ "86P/Russell 2". Gary Kronk. Retrieved 15 April 2015.
Numbered comets
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88P/Howell
89P/Russell Next
90P/Gehrels