87P/Bus

Comet 87P/Bus is a periodic comet with an orbital period of 6.5 years. It fits the definition of an Encke-type comet with (TJupiter > 3; a < aJupiter). It was discovered by Schelte J. Bus in 1981 on a plate taken with the 1.2m UK Schmidt telescope at Siding Spring, Australia. The discovery was announced in IAU Circular 3578 on March 4, 1981.

87P/Bus
Discovery
Discovered bySchelte J. Bus
Discovery date1981
Alternative
designations		Bus/1981b; Bus/1981 XI;
Orbital characteristics A
EpochMarch 6, 2006
Aphelion4.798 AU
Perihelion2.174 AU
Semi-major axis3.486 AU
Eccentricity0.3764
Orbital period6.509 a
Inclination2.5768°
Last perihelionDecember 19, 2013[1][2]
July 7, 2007
Next perihelion2020-May-09[3]

It has been observed on each of its subsequent apparitions, most recently in 2013.[4]

References
  1. Syuichi Nakano (2010-04-29). "87P/Bus (NK 1931)". OAA Computing and Minor Planet Sections. Retrieved 2012-02-18.
  2. 87P past, present and future orbital elements
  3. "87P/Bus Orbit". Minor Planet Center. Retrieved 2014-06-16.
  4. "87/P Bus". Seiichi Yoshida. Retrieved 15 May 2015.
Numbered comets
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86P/Wild		 87P/Bus Next
88P/Howell
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