102P/Shoemaker
Periodic comet with 7 year orbit
From Wikipedia, the free encyclopedia
102P/Shoemaker, also known as Shoemaker 1, is a Jupiter-family comet with a 7.47-year orbit around the Sun. It was first seen in 1984 and then again in 1991. Images taken of it in 1999 were not recognized until 2006 when it was once again observed. It was unexpectedly dim in each of these returns.
Discoverydate27 September 1984
P/1984 S2
P/1991 L2
P/1991 L2
- Shoemaker 1
- 1984 XVI, 1991 XXIII
- 1984q, 1991p
| Discovery | |
|---|---|
| Discovered by | Carolyn S. Shoemaker Eugene Merle Shoemaker |
| Discovery date | 27 September 1984 |
| Designations | |
| P/1984 S2 P/1991 L2 | |
| |
| Orbital characteristics[1][2] | |
| Epoch | 21 November 2025 (JD 2461000.5) |
| Observation arc | 37.35 years |
| Earliest precovery date | 1 September 1984 |
| Number of observations | 529 |
| Aphelion | 5.562 AU |
| Perihelion | 2.079 AU |
| Semi-major axis | 3.821 AU |
| Eccentricity | 0.45582 |
| Orbital period | 7.468 years |
| Inclination | 25.846° |
| 339.35° | |
| Argument of periapsis | 20.708° |
| Mean anomaly | 232.94° |
| Last perihelion | 22 January 2021 |
| Next perihelion | 10 July 2028[3] |
| TJupiter | 2.732 |
| Earth MOID | 0.976 AU |
| Jupiter MOID | 0.191 AU |
| Physical characteristics[1] | |
Mean radius | 0.208 km (0.129 mi)[4] |
| Comet total magnitude (M1) | 16.2 |
