47P/Ashbrook–Jackson
| Discovery | |
|---|---|
| Discovered by | Joseph Ashbrook United States Cyril V. JacksonSouth Africa |
| Discovery date | August 26, 1948 |
| Designations | |
| 1948 IX; 1956 II; 1963 VI; 1971 III; 1978 XIV; 1986 II; 1993 XIII | |
| Orbital characteristics | |
| Epoch | March 6, 2006 |
| Aphelion | 5.44 AU |
| Perihelion | 2.759 AU |
| Semi-major axis | 4.1 AU |
| Eccentricity | 0.3269 |
| Orbital period | 8.301 a |
| Inclination | 13.2252° |
| Last perihelion | January 31, 2009 |
| Next perihelion | June 10, 2017[1] |
47P/Ashbrook–Jackson is a periodic comet in the Solar System.
The comet nucleus is estimated to be 5.6 kilometers in diameter.[2]
History
Comet 47P/Ashbrook–Jackson was discovered by American and South African scientists in 1948.
Name
47p is in the name because it was the 47th periodic comet discovered. Ashbrook–Jackson is the names of its two discoverers.
Apparitions
- January 31, 2009
- January 6, 2001
- July 14, 1993
- January 24, 1986
- August 19, 1978
- March 13, 1971
- October 2, 1963
- April 6, 1956
- October 4, 1948
References
- ^ Patrick Rocher (2010-03-01). "Note number : 0020 P/Ashbrook-Jackson : 47P". Institut de mécanique céleste et de calcul des éphémérides. Retrieved 2012-02-20.
- ^ "JPL Small-Body Database Browser: 47P/Ashbrook-Jackson" (2010-01-21 last obs). Jet Propulsion Laboratory. Retrieved 2010-03-01.
External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- 47P/Ashbrook-Jackson – Seiichi Yoshida @ aerith.net
- 47P at Kronk's Cometography / Periodic comets
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