Comet C/2020 R7 (ATLAS)

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Observation date	image	Photometry (FOCAS)	Afρ	astrometry	Observatory
20230403	X	X	X	X	B96 - BRIXIIS
20230517	X	X	X	X	B96 - BRIXIIS
20230604	X	X	X	X	B96 - BRIXIIS

Comet C/2020 R7 (ATLAS)

Photometric data obtained from FOCAS-II software

COD B96

OBS BRIXIIS Observatory

CATALOG: Gaia DR2 - BAND: G

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

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

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

C/2020 R7 03/04/2023 03:35:15 16.67 15.90 15.46 15.16 14.92 14.71 11.3 17.8 B96

C/2020 R7 03/04/2023 03:35:15* 0.03 0.00 0.03 0.02 0.04 0.12 2 3.5 Gai

C/2020 R7 18/05/2023 00:15:04 16.78 16.16 15.87 15.64 15.52 15.51 13.4 18.3 B96

C/2020 R7 18/05/2023 00:15:04* 0.01 0.05 0.04 0.05 0.06 0.08 2 3.0 Gai

C/2020 R7 04/06/2023 23:13:51 16.98 16.41 16.11 16.03 15.90 15.87 9.9 17.5 B96

C/2020 R7 04/06/2023 23:13:51* 0.02 0.02 0.07 0.07 0.08 0.13 2 3.8 Gai

AFRHO LOG

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

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

C/2020 R7 03/04/2023 03:35:15 3.23 3.55 8.54 16.84 11 232 21 2.366 B96

C/2020 R7 18/05/2023 00:15:04 3.09 3.80 8.92 16.80 13 252 19 2.401 B96

C/2020 R7 04/06/2023 23:13:51 3.23 3.90 8.55 17.00 10 241 24 2.383 B96

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

http://cara.uai.it

Discovery: CBET 4859

An apparently asteroidal object discovered on CCD images taken on Sept. 15.6 UT with a 0.5-m f/2 Schmidt reflector at Mauna Loa, Hawaii, in the course of the "Asteroid Terrestrial-Impact Last Alert System" (ATLAS) search program has been found to show cometary appearance by CCD astrometrists elsewhere.