C/2021 J1 (Maury–Attard)

For other comets discovered by Alain Maury, see Comet Maury (disambiguation).

C/2021 J1 (Maury–Attard)
Discovery
Discovered byAlain Maury
Georges Attard
Discovery date9 May 2021
Orbital characteristics
Epoch27 April 2021 (JD 2459331.5)
Observation arc124 days
Number of
observations		106
Aphelion51.31 AU
Perihelion1.741 AU
Semi-major axis26.53 AU
Eccentricity0.934
Orbital period135±2 years
Inclination92.719°
88.320°
Argument of
periapsis		147.33°
Mean anomaly0.479°
Last perihelion19 February 2021
Next perihelion~2154
TJupiter0.120
Earth MOID0.826 AU
Jupiter MOID2.959 AU
Comet total
magnitude (M1)		17.1

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

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

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