273P/Pons–Gambart
Comet Pons–Gambart by the Palomar Transient Factory on 18 March 2013 | |
| Discovery | |
|---|---|
| Discovered by | Jean-Louis Pons Jean-Félix Adolphe Gambart |
| Discovery date | 21 June 1827 |
| Designations | |
| C/1827 M1, P/2012 V4 | |
| Orbital characteristics | |
| Epoch | 25 February 2023 (JD 2460000.5) |
| Observation arc | 187–904 years |
| Earliest precovery date | May 1110? |
| Number of observations | 1,185 |
| Aphelion | 63.147 AU |
| Perihelion | 0.826 AU |
| Semi-major axis | 31.986 AU |
| Eccentricity | 0.97419 |
| Orbital period | 185.6 years |
| Inclination | 136.75° |
| 320.42° | |
| Argument of periapsis | 20.287° |
| Mean anomaly | 20.259° |
| Last perihelion | 19 December 2012 |
| Next perihelion | 9 August 2191 |
| TJupiter | -0.645 |
| Earth MOID | 0.172 AU |
| Jupiter MOID | 1.389 AU |
| Comet total magnitude (M1) | 11.3 |
| Comet nuclear magnitude (M2) | 14.9 |
273P/Pons–Gambart, also called Comet Pons-Gambart, is a periodic comet in a retrograde orbit first discovered on 21 June 1827 by Jean-Louis Pons and Jean-Félix Adolphe Gambart. It has a 186 year orbit and it fits the classical definition of a Halley-type comet (20 years < period < 200 years). Its last perihelion was in December 2012 and will next come to perihelion around August 2191.