143P/Kowal–Mrkos is a periodic comet in the Solar System.
| Discovery | |
|---|---|
| Discovered by | Charles T. Kowal Antonín Mrkos |
| Discovery date | April 23, 1984 |
| Alternative 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° |
| Jupiter MOID | 0.0196 AU (2,930,000 km) |
| Last perihelion | May 7, 2018[1] June 12, 2009 |
| Next perihelion | 2026-Dec-28 (JPL Horizons last obs 2018-08-08) |
| Numbered comets | ||
|---|---|---|
| Previous 142P/Ge–Wang |
143P/Kowal–Mrkos | Next 144P/Kushida |
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