105P/Singer Brewster
| Discovery | |
|---|---|
| Discovered by | Stephen Singer-Brewster |
| Discovery date | May 3, 1986 |
| Designations | |
| 1986 XI; 1992 XXVI | |
| Orbital characteristics | |
| Epoch | 2011-Feb-08 (JD 2455600.5) |
| Aphelion | 4.8915 AU |
| Perihelion | 2.0502 AU |
| Semi-major axis | 3.4709 AU |
| Eccentricity | 0.40929 |
| Orbital period | 6.47 yr |
| Inclination | 9.1706° |
| Last perihelion | February 26, 2012[1][2] September 11, 2005 April 6, 1999 |
| Next perihelion | 2018-Aug-10[3] |
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.[4]
Because 105P/Singer-Brewster only comes within 2 AU of the Sun,[5] during the 2012 perihelion passage it is only expected to brighten to about apparent magnitude 17.[6]
The comet nucleus is estimated to be 2.2 kilometers in diameter.[5]
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.[7][8]
The IAU does not distinguish between endashes and hyphens. The IAU writes co-discovered comets, where an endash is expected, such as in Shoemaker–Levy 9 and Swift–Tuttle, with the names of the co-discoverers linked by hyphens. To distinguish comets discovered by people with hyphenated surnames (such as Comet Singer-Brewster), the IAU removes replaces the hyphen by a space.
References
- ^ Seiichi Yoshida (February 19, 2011). "105P/Singer Brewster". Seiichi Yoshida's Comet Catalog. Archived from the original on April 27, 2011. Retrieved May 3, 2011.
- ^ Syuichi Nakano (April 21, 2009). "105P/Singer Brewster (NK 1762)". OAA Computing and Minor Planet Sections. Retrieved May 3, 2011.
- ^ Patrick Rocher (March 7, 2011). "Note number : 0104 P/Singer-Brewster : 105P". Institut de mecanique celeste et de calcul des ephemerides. Retrieved February 27, 2012.
- ^ Excerpts from the IAU circulars, May 3, 1986, in Stardust June 1986, issue 10, volume XLII, published by National Capital Astronomers
- ^ a b "JPL Small-Body Database Browser: 105P/Singer Brewster". 2011-02-05 last obs. Retrieved 2011-05-03.
{{cite web}}: Check date values in:|date=(help) - ^ "Magnitude plot for 105P/Singer Brewster in 2012". Comet for Windows. Retrieved May 3, 2011.
- ^ "C&MS: 105P/Singer Brewster". Retrieved January 13, 2012.
- ^ "JPL Close-Approach Data: 105P/Singer Brewster". 2011-02-05 last obs. Retrieved 2012-02-17.
{{cite web}}: Check date values in:|date=(help)
External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- 105P/Singer Brewster – Seiichi Yoshida @ aerith.net
- Elements and Ephemeris for 105P/Singer Brewster – Minor Planet Center
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