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105P/Singer Brewster

Periodic comet with 6 year orbit

Field	Value
name	105P/Singer Brewster
image	105P 2018-05-19 image ZTF-sso-473-zr-fov-2.8arcmin.png
discoverer	Stephen Singer-Brewster
discovery_date	May 3, 1986
designations	1986 XI; 1992 XXVI
epoch	2011-Feb-08
(JD 2455600.5)
semimajor	3.4709 AU
perihelion	2.0502 AU
aphelion	4.8915 AU
eccentricity	0.40929
period	6.47 yr
inclination	9.1706°
last_p	2018-Aug-10
February 26, 2012
September 11, 2005
April 6, 1999
next_p	2025-Jan-22

(JD 2455600.5) February 26, 2012 September 11, 2005 April 6, 1999

105P/Singer Brewster is a periodic comet in the Solar System. It was discovered in 1986, and received the name of 1986d under the old naming system.

Because 105P/Singer Brewster only comes within 2 AU of the Sun, during the 2012 perihelion passage it is only expected to brighten to about apparent magnitude 17.

The comet nucleus is estimated to be 2.2 kilometers in diameter.

The orbit of Comet Singer Brewster was altered significantly in August 1976 when it passed within 0.376 AU of Jupiter and will be altered again in August 2059.

The single discoverer bears a hyphenated surname (Singer-Brewster), but co-discovered comets bear the names of the co-discoverers linked by hyphens, e.g. Shoemaker-Levy 9, Swift-Tuttle, etc. In these cases, the IAU either removes one of the parts of the name or replaces the hyphen by a space.

References

{{mpc. 105p
"IAU Comet-naming Guidelines". [[International Astronomical Union]].
Don E. Machholz. (1989). "Comet Corner". Journal of the Association of Lunar and Planetary Observers.
[http://www.capitalastronomers.org/SD_year/1986/StarDust_1986_06.pdf Excerpts from the IAU circulars, May 3, 1986], in ''Stardust'' June 1986, issue 10, volume XLII, published by National Capital Astronomers

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