455P/PanSTARRS

For other comets of the same name, see List of Pan-STARRS discoveries.

455P/PANSTARRS is an Encke-type periodic comet that completes a 5.6-year orbit around the Sun within the main asteroid belt. It is also considered an active asteroid, whose orbit suggested it may belong to the Theobalda collisional family.^[4]

455P/PANSTARRS

Discovery
Discovered by	Pan-STARRS
Discovery site	Haleakala Observatory
Discovery date	30 September 2017
Designations
MPC designation	P/2011 Q5 P/2017 S9 P/2022 R7
Alternative designations	P10E2ep
Orbital characteristics[1][2]
Epoch	25 February 2023 (JD 2460000.5)
Observation arc	11.03 years
Earliest precovery date	21 August 2011
Number of observations	71
Aphelion	4.119 AU
Perihelion	2.192 AU
Semi-major axis	3.155 AU
Orbital period	5.604 years
Inclination	14.138°
Longitude of ascending node	146.21°
Argument of periapsis	237.57°
Mean anomaly	359.92°
Last perihelion	25 February 2023
Next perihelion	1 October 2028
TJupiter	3.088
Earth MOID	1.234 AU
Jupiter MOID	1.556 AU
Physical characteristics[3]
Mean radius	0.5±0.2 km
Comet total magnitude (M1)	9.4