C/2021 J1 (Maury–Attard)

C/2021 J1 (Maury–Attard)
Discovery
Discovered byAlain Maury
Georges Attard
Discovery date9 May 2021
Orbital characteristics[2]
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[1]
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[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.

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

References

  1. ^ a b "Horizons Batch for C/2021 J1 (Maury-Attard) around 2154" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Archived from the original on October 1, 2021. Retrieved June 22, 2022. (JPL#4 / Soln.date: 2022-Feb-03)
  2. ^ a b "JPL Small-Body Database Browser: C/2021 J1 (Maury-Attard)". Jet Propulsion Laboratory. Retrieved September 30, 2021.
  3. ^ "ALPO COMET NEWS FOR MAY 2021". Cloudy Nights. Retrieved July 13, 2021.
  4. ^ "New Comet C/2021 J1 (Maury-Attard)". Comet Observation Database. Archived from the original on July 30, 2021. Retrieved July 13, 2021.
  5. ^ a b Feldmann, Jean-Baptiste (June 7, 2021). "C/2021 J1 Maury-Attard, la comète française inespérée". CIELMANIA : le blog de Jean-Baptiste FELDMANN, photographe du ciel. Retrieved July 13, 2021.
  6. ^ "MAP history and description". San Pedro de Atacama Celestial Explorations. Retrieved July 13, 2021.
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