C/2021 J1 (Maury–Attard)

C/2021 J1 (Maury–Attard) is a Halley-type comet discovered on 9 May 2021, by French amateur astronomers Alain Maury and Georges Attard^[3][4] with the MAP (Maury/Attard/Parrott) observation program.^[5][6] It is the first comet discovered with the synthetic tracking technique, made possible with the Tycho Tracker commercial software developed by Daniel Parrott.^[5] When it was discovered, it had a magnitude of 19.

C/2021 J1 (Maury–Attard)

Discovery
Discovered by	Alain Maury Georges Attard
Discovery date	9 May 2021
Orbital characteristics[1]
Epoch	27 April 2021 (JD 2459331.5)
Observation arc	124 days
Number of observations	106
Aphelion	51.31 AU
Perihelion	1.741 AU
Semi-major axis	26.53 AU
Eccentricity	0.934
Orbital period	135±2 years
Inclination	92.719°
Longitude of ascending node	88.320°
Argument of periapsis	147.33°
Mean anomaly	0.479°
Last perihelion	19 February 2021
Next perihelion	~2154[2]
TJupiter	0.120
Earth MOID	0.826 AU
Jupiter MOID	2.959 AU
Comet total magnitude (M1)	17.1

It has a 124 day observation arc.^[1] It came to perihelion on 19 February 2021. The next perihelion will be in early 2154.^[2]