7P/Pons–Winnecke
 Contemporary 1921 illustration of Pons–Winnecke comet. | |
| Discovery | |
|---|---|
| Discovered by |
Jean Louis Pons & Friedrich Winnecke |
| Discovery date |
June 12, 1819 & March 9, 1858 |
| Alternative designations |
1858 E1, 1858 II, 1819 III, 1927c, 1933b, 1939c, 1945a, 1951c, 1964b, 1970b, 1976f, 1983b, 1989g |
| Orbital characteristics A | |
| Epoch | May 6, 2002 |
| Aphelion | 5.611 AU |
| Perihelion | 1.257 AU |
| Semi-major axis | 3.434 AU |
| Eccentricity | 0.634 |
| Orbital period | 6.37 a |
| Inclination | 22.28° |
| Dimensions | 5.2 km[1] |
| Last perihelion | September 26, 2008 |
| Next perihelion | January 30, 2015[2][3] |
7P/Pons–Winnecke (also known as Comet Pons–Winnecke) is a periodic Jupiter-family comet in the solar system.
The comet most recently came to perihelion (closest approach to the Sun) on January 30, 2015,[2] and at perihelion passage it had a solar elongation of 24 degrees.[4]
Jean Louis Pons (Marseille) originally discovered the comet on June 12, 1819, it was later rediscovered by Friedrich August Theodor Winnecke (Bonn) on March 9, 1858. It is believed to be the parent body of the June Bootids of late June.
7P has an orbital period of 6.37 years. It has a perihelion of 1.3 AU and an aphelion of 5.6 AU (past the orbit of Jupiter). It passed within 6 million km (0.04 AU) of Earth in June 1927, and 16 million km (0.1 AU) in 1939;[5] but it will not come as close in the 21st century.
The comet nucleus is estimated at about 5.2 km in diameter.[1]
References
- 1 2 "JPL Small-Body Database Browser: 7P/Pons-Winnecke" (last observation:2014-03-28). Jet Propulsion Laboratory. Retrieved 2010-02-25.
- 1 2 Seiichi Yoshida (2013-12-14). "7P/Pons-Winnecke". Seiichi Yoshida's Comet Catalog. Retrieved 2014-10-29.
- ↑ Patrick Rocher (2008-12-23). "Note number : 0039 P/Pons-Winnecke : 7P". Institut de mécanique céleste et de calcul des éphémérides. Retrieved 2012-02-19.
- ↑ "Elements and Ephemeris for 7P/Pons-Winnecke". Minor Planet Center. Retrieved 2014-10-29. (0007P)
- ↑ "JPL Close-Approach Data: 7P/Pons-Winnecke" (last observation: 2014-03-28). Retrieved 2008-03-22.
External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- Elements and Ephemeris for 7P/Pons-Winnecke – Minor Planet Center
- 7P/Pons-Winnecke – Seiichi Yoshida @ aerith.net
- 7P – Gary W. Kronk's Cometography
- article on the nuclei of 7P, 14P, and 92P
| Periodic comets (by number) | ||
|---|---|---|
| Previous 6P/d'Arrest |
7P/Pons–Winnecke | Next 8P/Tuttle |