42P/Neujmin

42P/Neujmin, also known as Neujmin 3, is a periodic comet 2 km in diameter.

42P/Neujmin

Discovery
Discovered by	Grigory Neujmin
Discovery date	August 2, 1929
Designations
Alternative designations	1929 III; 1; 1993 XVI
Orbital characteristics
Epoch	March 6, 2006
Aphelion	7.701 AU
Perihelion	2.014 AU
Semi-major axis	4.858 AU
Eccentricity	0.5854
Orbital period	10.71 a
Inclination	3.9854°
Last perihelion	April 8, 2015[1] July 15, 2004[1][2]
Next perihelion	January 14, 2026[1]

This comet and 53P/Van Biesbroeck are fragments of a parent comet that split in March 1845.^[3][4][5]

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.^[6]

The comet nucleus is estimated to be 2.2 kilometers in diameter.^[7]