412P/WISE
Periodic comet
From Wikipedia, the free encyclopedia
412P/WISE is an Encke-type comet with a 5.5-year orbit around the Sun. It is the first of many comets discovered by the Wide-field Infrared Survey Explorer (WISE),[5] and has since been followed by ground observatories, among them the Mauna Kea Observatory.[6]
Discoverydate22 January 2010
P/2010 B2, P/2020 Y1
Discovery image of the comet (center) taken by WISE on 22 January 2010 | |
| Discovery[1] | |
|---|---|
| Discovered by | WISE |
| Discovery date | 22 January 2010 |
| Designations | |
| P/2010 B2, P/2020 Y1 | |
| Orbital characteristics[2][3] | |
| Epoch | 17 December 2020 (JD 2459200.5) |
| Observation arc | 11.11 years |
| Number of observations | 74 |
| Aphelion | 4.603 AU |
| Perihelion | 1.618 AU |
| Semi-major axis | 3.110 AU |
| Eccentricity | 0.47994 |
| Orbital period | 5.485 years |
| Inclination | 8.931° |
| 0.849° | |
| Argument of periapsis | 155.92° |
| Mean anomaly | 2.088° |
| Last perihelion | 5 December 2020 |
| Next perihelion | 30 May 2026 |
| TJupiter | 3.013 |
| Earth MOID | 0.625 AU |
| Jupiter MOID | 0.432 AU |
| Physical characteristics[2] | |
Mean radius | 0.495 km (0.308 mi)[4] |
| Comet total magnitude (M1) | 15.2 |
| Comet nuclear magnitude (M2) | 19.1 |
Orbit
The comet has an orbital period of 5.49 years, an aphelion of 4.6 AU (690 million km) and a perihelion of 1.62 AU (242 million km).[7]
