P/2016 P5 (COIAS)

P/2016 P5 (COIAS) is a Jupiter-family comet with a 10-year orbit around the Sun. Its discovery was announced on 21 March 2025, when cometary activity was spotted on an asteroidal object that was photographed by the Subaru Telescope in 2016.^[1]

P/2016 P5 (COIAS)

Precovery image of Comet COIAS (center) taken from the Subaru Telescope on 3 July 2016
Discovery[1]
Discovered by	Seitaro Urakawa H. Fukuyama
Discovery site	Subaru–MKO Come On! Impacting ASteroids (COIAS)
Discovery date	1 August 2016
Orbital characteristics[2]
Epoch	1 December 2015 (JD 2457357.5)
Observation arc	18.83 years
Earliest precovery date	23 June 2004
Number of observations	58
Aphelion	4.979 AU
Perihelion	4.426 AU
Semi-major axis	4.703 AU
Eccentricity	0.05885
Orbital period	10.198 years
Inclination	7.036°
Longitude of ascending node	185.48°
Argument of periapsis	33.632°
Last perihelion	29 May 2023[3]
Next perihelion	c. 2033
TJupiter	2.990
Earth MOID	3.422 AU
Jupiter MOID	0.001 AU
Comet total magnitude (M1)	8.0