| Discovery | |
|---|---|
| Discovered by: | Charles T. Kowal Antonín Mrkos |
| Discovery date: | April 23, 1984 |
| Alternate designations: | 1984 JD; 1984 X; 2000 ET90 |
| Orbital characteristics A | |
| Epoch: | March 6, 2006 |
| Aphelion: | 6.074 AU |
| Perihelion: | 2.538 AU |
| Semi-major axis: | 4.306 AU |
| Eccentricity: | 0.4106 |
| Orbital period: | 8.935 a |
| Inclination: | 4.6896° |
| Last perihelion: | June 12, 2009 |
| Next perihelion: | May 7, 2018 |
143P/Kowal-Mrkos is a periodic comet in our solar system.
| Periodic comets (by number) | ||
|---|---|---|
| Previous 142P/Ge-Wang |
143P/Kowal–Mrkos | Next 144P/Kushida |