120P/Mueller

For other comets of the same name, see Comet Mueller.

120P/Mueller, also known as Mueller 1, is a periodic comet in the Solar System. It last came to perihelion in May 2021^[1] and underwent a 1.4 magnitude outburst in August 2021,^[4] (3m 1d after perihelion).

120P/Mueller

Discovery
Discovered by	Jean Mueller
Discovery date	October 18, 1987
Designations
Alternative designations	1987 XXXI; 1995 O2
Orbital characteristics
Epoch	2022-01-21
Aphelion	5.448 AU
Perihelion	2.478 AU
Semi-major axis	3.963 AU
Eccentricity	0.3746
Orbital period	7.88 yr
Inclination	8.4899°
Last perihelion	May 7, 2021[1] February 22, 2013[2] September 30, 2004
Next perihelion	2029-Apr-05[3]