102P/Shoemaker 1

Japanese version
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Updated on December 31, 2013

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* Profile

Kazuo Kinoshita's calculation revealed that it passed close by Jupiter in 1980 and the perihelion distance reduced from 2.5 A.U. down to 2.0 A.U. It was discovered because it became close to the sun.

In 1984 when it approached to the sun for the first time, it was discovered at 13 mag, and brightened up to 11 mag. In the next return in 1991, it brightened rapidly up to 14 mag. However, it was actually so faint as 19 mag in the return in 2006, much fainter than before by 5 mag, although it was expected to reach to 14 mag again.

It kept the bright behavior in two appearances. However, it suddenly faded in 2006.

In the return in 1999, it was observed as 20 mag about 1 year after the perihelion passage due to the bad condition. So it cannot say whether it reached up to 14 mag, or only to 19 mag at best, at the periheolion passage.

* Returns and Appearances

!Discovered *Appeared -Not observed #Appeared before discovery +Not observed before discovery .Returns in the future
* 102P
2013 Sept. 1
* 102P
2006 June 6
* 102P
1999 Mar. 16
* 102P/1991 L2
1991 Dec. 18
! 102P/1984 S2
1984 Sept.16

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The perihelion dates in the past appearances are printed on Catalog of Cometary Orbits 1996.
Information on the discovery and historical highlights are available at General Comet Info (Gary W. Kronk).
The past and future orbital elements calculated by Kazuo Kinoshita (http://www9.ocn.ne.jp/~comet/pcmtn/0102p.htm).

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Copyright(C) Seiichi Yoshida (comet@aerith.net). All rights reserved.