35P/Herschel–Rigollet
< 35P
Comet Herschel–Rigollet photographed by Ferdinand Quénisset on 14 August 1939 | |
| Discovery | |
|---|---|
| Discovered by | Caroline Herschel Roger Rigollet |
| Discovery date | 21 December 1788 28 July 1939 |
| Designations | |
| P/1788 Y1, P/1939 O1 | |
| 1788 II, 1939 VI, 1939h | |
| Orbital characteristics | |
| Epoch | 5 August 1939 (JD 2429480.5) |
| Observation arc | 152 years |
| Number of observations | 75 |
| Aphelion | 56.939 AU |
| Perihelion | 0.748 AU |
| Semi-major axis | 28.844 AU |
| Eccentricity | 0.97405 |
| Orbital period | 155 years |
| Inclination | 64.207° |
| 355.98° | |
| Argument of periapsis | 29.298° |
| Mean anomaly | 359.97° |
| Last perihelion | 9 August 1939 |
| Next perihelion | 13 February 2092 (MPC) 17 February 2092 (JPL) 16 March 2092 |
| TJupiter | 0.644 |
| Comet total magnitude (M1) | 8.3 |
35P/Herschel–Rigollet is a periodic comet with an orbital period of 155 years and an orbital inclination of 64 degrees. It was discovered by Caroline Herschel (Slough, United Kingdom) on 21 December 1788. Given that the comet has a 155-year orbit involving asymmetric outgassing, and astrometric observations in 1939 were not as precise as modern observations, predictions for the next perihelion passage in 2092 vary by about a month.