|Discovered by||Jean Louis Pons &
|Discovery date||June 12, 1819 &
March 9, 1858
|1858 E1, 1858 II, 1819 III,
1927c, 1933b, 1939c,
1945a, 1951c, 1964b,
1970b, 1976f, 1983b,
|Orbital characteristics A|
|Epoch||May 6, 2002|
|Semi-major axis||3.434 AU|
|Orbital period||6.37 a|
|Last perihelion||September 26, 2008|
|Next perihelion||January 30, 2015|
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; but it will not come as close in the 21st century.
- Patrick Rocher (2008-12-23). "Note number : 0039 P/Pons-Winnecke : 7P". Institut de mecanique celeste et de calcul des ephemerides. Retrieved 2012-02-19.
- "JPL Close-Approach Data: 7P/Pons-Winnecke". 2008-10-19 last obs. Retrieved 2008-03-22.
- "JPL Small-Body Database Browser: 7P/Pons-Winnecke". Jet Propulsion Laboratory. 2008-10-19 last obs. Retrieved 2010-02-25.
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- 7P/Pons-Winnecke – Seiichi Yoshida @ aerith.net
- 7P at Kronk's Cometography
- article on the nuclei of 7P, 14P, and 92P
|Periodic comets (by number)|