D/1952 B1 ( Harrington-Wilson )

Japanese version
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Updated on October 8, 2017

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* Profile

It was discovered at 15 mag on January 30, 1952. Then it was observed for one month until February 25. But it has not been observed since that.

The brightness in 1952 yields the absolute magnitude of H10 = 12.0 mag.

It must have been observable at 14.5-15 mag in good condition before the perihelion passages in 1958 and 1978, but not been observed. In 2004, it became in good condition after the perihelion passage like at the discovery, when it must have reached to 14.5 mag. However, it was not recovered even by automated surveys.

Therefore, the brightness in 1952 must have been due to a temporary outburst. The usual brightness will be so faint as H10 = 18.0 mag or fainter.

Kazuo Kinoshita's calculation reveals that it will pass close by Jupiter in 2009, then the perihelion distance will decrease from 1.9 A.U. down to 1.2 A.U. As a result, it will be observable brighter than before by 2 mag.

Another new outburst may occur due to coming closer to the sun. However, the condition in 2011, when it comes closer to the sun for the first time, will be too bad to observe.

The condition in 2017 is good, so it may be recovered by automated surveys.

* Returns and Appearances

!Discovered *Appeared -Not observed #Appeared before discovery +Not observed before discovery .Returns in the future
.
2022 Sept. 21
-
2017 Mar. 1
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2011 July 30
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2004 Dec. 25
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1998 Apr. 11
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1991 July 28
-
1984 Nov. 2
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1978 Feb. 8
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1971 May 24
-
1964 Sept. 5
-
1958 Mar. 8
! D/1952 B1
1951 Oct. 30

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The perihelion dates in the past appearances are printed on Catalog of Cometary Orbits 1996.
The perihelion dates since 1958 are calculated by Kazuo Kinoshita (http://www9.ocn.ne.jp/~comet/pcmt/j52b1.htm).
Information on the discovery and historical highlights are available at General Comet Info (Gary W. Kronk).
Orbital elements in the past and future are calculated by Kazuo Kinoshita (http://www9.ocn.ne.jp/~comet/pcmt/j52b1.htm).

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