64P/Swift–Gehrels is a periodic comet in the Solar System which has a current orbital period of 9.23 years.

64P/Swift-Gehrels
Discovery
Discovered byLewis A. Swift
Tom Gehrels
Discovery date17 November 1889
8 February 1973
Alternative
designations
Swift 1
Orbital characteristics A
Aphelion7.5231 AU
Perihelion1.3932 AU
Semi-major axis4.4582 AU
Eccentricity0.687
Orbital period9.41 a
Inclination8.9487°
Last perihelion2018-Nov-03
June 2009
Next perihelion2028-Mar-31[1]

It was originally discovered on 17 November 1889 by Lewis A. Swift at the Warner Observatory, Rochester, New York, and was described by Swift as being pretty faint. It was rediscovered on 8 February 1973 by Tom Gehrels at the Palomar Observatory, California who estimated its brightness as a very low magnitude 19.[2]

It was also observed in 1981, 1991, 2000, 2009 and 2018.

Comet 64P in Pegasus in October 2018

See alsoEdit

ReferencesEdit

  1. ^ MPC
  2. ^ "64P/Swift-Gehrels". Retrieved 26 November 2014.
Numbered comets
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63P/Wild
64P/Swift–Gehrels Next
65P/Gunn