Comet C/2021 X1 (Maury-Attard)

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Observation date	image	Photometry (FOCAS)	Afρ	astrometry	Observatory
20231115	X	X		X	B96 - BRIXIIS
20240119	X	X		X	B96 - BRIXIIS

COMET C/2021 X1 (Maury-Attard)

Photometric data obtained from FOCAS-II software

CATALOG: Gaia DR2 - BAND: G

10x10 20x20 30x30 40x40 50x50 60x60 SNR SB COD

COMET UTC +/- +/- +/- +/- +/- +/- N FWHM CAT

------------ ------------------- ----- ----- ----- ----- ----- ----- ---- ---- ---

C/2021 X1 15/11/2023 19:39:39 16.63 16.09 15.85 15.69 15.61 15.60 15.9 17.8 B96

C/2021 X1 15/11/2023 19:39:39* 0.03 0.07 0.02 0.00 0.01 0.03 3 3.6 Gai

AFRHO LOG

COMET UTC DELTA r BOX " MAG RSR CM +/- AFRHO OBS

------------ ------------------- ----- ----- ----- ----- --- ----- ---- ----- ---

C/2021 X1 15/11/2023 19:39:39 3.12 3.62 8.83 16.63 16 274 17 2.437 B96

Af(rho) data according the CARA-approach is available via request to CARA-coordinator

http://cara.uai.it

Comet C/2021 X1 (Maury-Attard) (astro.vanbuitenen.nl)

Discovery: [ CBET 5119: COMET C/2021 X1 ]

Alain Maury reports that Georges Attard (Mougins, France) and he have discovered another comet on images obtained on 2021 Dec. 2 , with the object described as appearing "a bit fuzzy" on images obtained with a 0.28-m f/2.2 Schmidt reflector at San Pedro de Atacama, Chile, in the course of their "Maury, Attard, Parrott" (MAP) survey project. The comet showed a 4".5 coma in 2" seeing. The Minor Planet Center inadvertently issued the designation A/2021 X1 when announcing this object on MPEC 2021-X157 on 2021 Dec. 8.

2021 UT R.A. (2000) Decl. Mag. Observer

Dec. 2.32400 8 25 15.77 -22 38 26.1 19.0 Maury

2.32983 8 25 15.49 -22 38 28.1 18.8 "

2.33560 8 25 15.23 -22 38 30.6 19.6 "

MPEC 2021-X157: A/2021 X1