412P/WISE

For other comets discovered by the Wide-field Infrared Survey Explorer satellite, see Comet WISE and NEOWISE.

412P/WISE is an Encke-type comet with a 5.5-year orbit around the Sun. It is the first of many comets discovered by the Wide-field Infrared Survey Explorer (WISE),^[5] and has since been followed by ground observatories, among them the Mauna Kea Observatory.^[6]

412P/WISE

Discovery image of the comet (center) taken by WISE on 22 January 2010
Discovery[1]
Discovered by	WISE
Discovery date	22 January 2010
Designations
MPC designation	P/2010 B2, P/2020 Y1
Orbital characteristics[2][3]
Epoch	17 December 2020 (JD 2459200.5)
Observation arc	11.11 years
Number of observations	74
Aphelion	4.603 AU
Perihelion	1.618 AU
Semi-major axis	3.110 AU
Eccentricity	0.47994
Orbital period	5.485 years
Inclination	8.931°
Longitude of ascending node	0.849°
Argument of periapsis	155.92°
Mean anomaly	2.088°
Last perihelion	5 December 2020
Next perihelion	30 May 2026
TJupiter	3.013
Earth MOID	0.625 AU
Jupiter MOID	0.432 AU
Physical characteristics[2]
Mean radius	0.495 km (0.308 mi)[4]
Comet total magnitude (M1)	15.2
Comet nuclear magnitude (M2)	19.1

Orbit

The comet has an orbital period of 5.49 years, an aphelion of 4.6 AU (690 million km) and a perihelion of 1.62 AU (242 million km).^[7]