| 42P/Neujmin | |
| Discoverer: | Grigory Neujmin |
| Discovery Date: | August 2, 1929 |
| Designations: | 1929 III; 1; 1993 XVI |
| Epoch: | March 6, 2006 |
| Semimajor: | 4.858 AU |
| Perihelion: | 2.014 AU |
| Aphelion: | 7.701 AU |
| Eccentricity: | 0.5854 |
| Period: | 10.71 a |
| Inclination: | 3.9854° |
| Last P: | April 8, 2015 July 15, 2004 |
| Next P: | January 14, 2026 |
42P/Neujmin, also known as Neujmin 3, is a periodic comet 2 km in diameter.
This comet and 53P/Van Biesbroeck are fragments of a parent comet that split in March 1845.[1] [2]
The comet did not come within 1 AU of a planet in the 20th century, but will pass 0.04 AU from asteroid 4 Vesta on July 17, 2036.
The comet nucleus is estimated to be 2.2 kilometers in diameter.