Great Comet of 1807
The Great Comet of 1807 seen from the Philippines, as depicted by Esteban Villanueva during the Basi Revolt | |
| Discovery | |
|---|---|
| Discovered by | Fr. P. Reggente Parisi |
| Discovery site | Castrogiovanni, Italy |
| Discovery date | 9 September 1807 |
| Orbital characteristics | |
| Epoch | 19 September 1807 (JD 2381313.7389) |
| Observation arc | 187 days |
| Number of observations | 70 |
| Aphelion | 285.76 AU |
| Perihelion | 0.6461 AU |
| Semi-major axis | 143.20 AU |
| Eccentricity | 0.9955 |
| Orbital period | ~1,714 years |
| Inclination | 63.176° |
| 269.48° | |
| Argument of periapsis | 4.097° |
| Last perihelion | 19 September 1807 |
| TJupiter | 0.486 |
| Physical characteristics | |
Mean radius | 4.92 km (3.06 mi) |
| Comet total magnitude (M1) | 1.6 |
| 1.0 (1807 apparition) | |
C/1807 R1, also known as the Great Comet of 1807, is a long-period comet. It was visible to naked-eye observers in the northern hemisphere from early September 1807 to late December, and is ranked among the great comets due to its exceptional brightness.