147P/Kushida–Muramatsu
< 147P
| Discovery | |
|---|---|
| Discovered by | Yoshio Kushida and Osamu Muramatsu |
| Discovery date | 10 December 1993 |
| Designations | |
| 1993 X1, 2000 T2 | |
| Orbital characteristics | |
| Aphelion | 4.856927 |
| Perihelion | 2.756415 |
| Semi-major axis | 3.806671 |
| Eccentricity | 0.275899 |
| Orbital period | 7.43 |
| Inclination | 2.3673° |
| Last perihelion | February 27, 2016 September 22, 2008 |
| Next perihelion | 2023-Dec-06 |
| Physical characteristics | |
| Dimensions | 0.42 km |
147P/Kushida–Muramatsu is a quasi-Hilda comet discovered in 1993 by Japanese astronomers Yoshio Kushida and Osamu Muramatsu.
According to calculations made by Katsuhiko Ohtsuka of the Tokyo Meteor Network and David Asher of Armagh Observatory, Kushida–Muramatsu was temporarily captured by Jupiter as an irregular moon between 14 May 1949, and 15 July 1962, (12.17+0.29
−0.27 years). It is the fifth such object known to have been captured.
It is thought that quasi-Hilda comets may be escaped Hilda asteroids. Comet Shoemaker–Levy 9, which collided with Jupiter in 1994, is a more famous example of a quasi-Hilda comet.