Comet C/2020 K1 (PANSTARRS)

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Observation date	image	Photometry (FOCAS)	Afρ	astrometry	Observatory
20200519	X			X	B96 - BRIXIIS
20201104	X	X		X	B96 - BRIXIIS
20201106	X	X		X	B96 - BRIXIIS
20210718	X	X		X	B96 - BRIXIIS
20210814	X	X	X	X	B96 - BRIXIIS
20210816	X	X		X	B96 - BRIXIIS
20210922	X	X		X	B96 - BRIXIIS
20211008	X	X		X	B96 - BRIXIIS
20211024	X	X		X	B96 - BRIXIIS
20211027	X	X	X	X	B96 - BRIXIIS
20211108	X	X		X	B96 - BRIXIIS
20211122	X	X		X	B96 - BRIXIIS
20220328	X	X	X	X	B96 - BRIXIIS
20220421	X	X	X	X	B96 - BRIXIIS
20220428	X	X	X	X	B96 - BRIXIIS
20220602	X	X	X	X	B96 - BRIXIIS
20220617	X	X	X	X	B96 - BRIXIIS
20220704	X	X	X	X	B96 - BRIXIIS
20220802	X	X	X	X	B96 - BRIXIIS
20220831	X	X	X	X	B96 - BRIXIIS

Comet C/2020 K1 (PANSTARRS)

Photometric data obtained from FOCAS-II software

COD X02

OBS Telescope.Live Observatory

CATALOG: Gaia DR2 - BAND: G

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

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

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

C/2020 K1 04/11/2020 18:48:05 18.82 18.56 18.57 18.02 5.7 17.8 B96

C/2020 K1 04/11/2020 18:48:05* 0.20 0.19 0.08 0.31 3 3.4 Gai

C/2020 K1 06/11/2020 18:40:24 19.15 19.00 18.66 0.9 18.0 B96

C/2020 K1 06/11/2020 18:40:24* 0.12 0.12 0.31 2 4.0 Gai

C/2020 K1 14/08/2021 21:48:45 17.12 16.87 16.76 16.86 6.7 18.0 B96

C/2020 K1 14/08/2021 21:48:45* 0.06 0.08 0.10 0.27 3 3.4 Gai

C/2020 K1 22/09/2021 21:27:45 16.63 16.29 16.39 3.7 17.5 B96

C/2020 K1 22/09/2021 21:27:45* 0.12 0.13 0.13 2 3.3 Gai

C/2020 K1 24/10/2021 19:49:34 16.84 16.38 16.37 16.41 8.3 17.6 B96

C/2020 K1 24/10/2021 19:49:34* 0.01 0.03 0.11 0.13 2 3.9 Gai

C/2020 K1 08/10/2021 19:21:26 16.49 16.02 15.98 15.93 15.92 15.91 6.3 17.9 B96

C/2020 K1 08/10/2021 19:21:26* 0.17 0.25 0.24 0.20 0.22 0.23 3 3.2 Gai

C/2020 K1 27/10/2021 19:34:16 16.84 16.34 16.05 15.69 15.28 14.79 5.7 17.7 B96

C/2020 K1 27/10/2021 19:34:16* 0.03 0.04 0.06 0.10 0.14 0.16 3 3.8 Gai

C/2020 K1 08/11/2021 18:42:00 16.89 16.57 16.59 16.51 10.1 16.8 B96

C/2020 K1 08/11/2021 18:42:00* 0.12 0.20 0.19 0.14 2 3.5 Gai

C/2020 K1 22/11/2021 18:31:24 16.72 16.27 16.28 16.26 16.31 6.4 17.1 B96

C/2020 K1 22/11/2021 18:31:24* 0.06 0.07 0.14 0.15 0.07 3 3.9 Gai

C/2020 K1 28/03/2022 01:51:14 15.13 14.75 14.63 14.66 14.67 18.8 16.0 B96

C/2020 K1 28/03/2022 01:51:14* 0.02 0.06 0.00 0.06 0.03 2 3.6 Gai

C/2020 K1 21/04/2022 00:42:34 15.50 14.87 14.76 14.73 14.75 17.4 16.9 B96

C/2020 K1 21/04/2022 00:42:34* 0.01 0.01 0.04 0.06 0.09 2 3.5 Gai

C/2020 K1 02/06/2022 00:16:48 15.02 14.31 13.99 13.86 13.81 13.81 24.4 18.4 B96

C/2020 K1 02/06/2022 00:16:48* 0.01 0.02 0.03 0.02 0.04 0.03 2 4.0 Gai

C/2020 K1 17/06/2022 22:36:08 14.88 14.12 13.81 13.65 13.60 13.63 22.6 17.1 B96

C/2020 K1 17/06/2022 22:36:08* 0.01 0.02 0.01 0.01 0.01 0.02 2 3.8 Gai

C/2020 K1 04/07/2022 22:53:49 14.79 14.01 13.71 13.54 13.47 13.45 32.9 18.4 B96

C/2020 K1 04/07/2022 22:53:49* 0.02 0.06 0.05 0.05 0.04 0.04 2 3.3 Gai

C/2020 K1 02/08/2022 21:01:42 14.80 14.03 13.70 13.53 13.45 13.41 40.1 17.9 B96

C/2020 K1 02/08/2022 21:01:42* 0.01 0.00 0.01 0.00 0.00 0.00 2 3.0 Gai

C/2020 K1 31/08/2022 20:16:13 14.88 14.13 13.76 13.55 13.48 13.44 21.7 16.6 B96

C/2020 K1 31/08/2022 20:16:13* 0.02 0.04 0.05 0.03 0.03 0.02 2 3.6 Gai

AFRHO LOG

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

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

C/2020 K1 04/11/2020 18:48:05 8.62 8.37 3.20 19.43 6 848 149 2.929 B96

C/2020 K1 06/11/2020 18:40:24 8.62 8.35 3.20 19.67 1 676 751 2.830 B96

C/2020 K1 14/08/2021 21:48:45 6.16 6.43 4.48 17.25 7 1893 283 3.277 B96

C/2020 K1 22/09/2021 21:27:45 6.21 6.16 4.44 16.79 4 2716 734 3.434 B96

C/2020 K1 08/10/2021 19:21:26 6.25 6.05 4.41 16.63 6 3077 488 3.488 B96

C/2020 K1 24/10/2021 19:49:34 6.28 5.94 4.39 17.02 8 2079 250 3.318 B96

C/2020 K1 27/10/2021 19:34:16 6.29 5.92 4.38 17.90 6 926 163 2.967 B96

C/2020 K1 22/11/2021 18:31:24 6.31 5.74 4.37 16.82 6 2361 369 3.373 B96

C/2020 K1 28/03/2022 01:51:14 4.95 4.89 5.57 15.22 19 4593 244 3.662 B96

C/2020 K1 21/04/2022 00:42:34 4.48 4.73 6.16 15.60 17 2479 142 3.394 B96

C/2020 K1 02/06/2022 00:16:48 3.73 4.45 7.39 15.10 24 2424 99 3.385 B96

C/2020 K1 17/06/2022 22:36:08 3.54 4.35 7.80 14.91 23 2460 109 3.391 B96

C/2020 K1 04/07/2022 22:53:49 3.41 4.24 8.09 14.82 33 2380 72 3.377 B96

C/2020 K1 02/08/2022 21:01:42 3.40 4.07 8.12 14.84 40 2124 53 3.327 B96

C/2020 K1 31/08/2022 20:16:13 3.60 3.90 7.65 14.99 22 1907 88 3.280 B96

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

http://cara.uai.it

CBET 4779 : 20200522 : COMET C/2020 K1 (PANSTARRS)

COMET C/2020 K1 (PANSTARRS)

R. Weryk, Institute for Astronomy, University of Hawaii, reports the discovery of another comet in CCD images obtained with the Pan-STARRS2 1.8-m Ritchey-Chretien reflector at Haleakala on May 17, with additional pre-discovery observations made with the same telescope that werre then identified during the previous month .

From four 45-s w-band exposures taken on Apr. 17, Weryk noted a condensed coma of diameter 0".5 (full-width-at-half-maximum of 2".5 in 2".0 seeing) with no tail. Similar exposurs on Apr. 27 showed a 0".9 condensed coma (FWHM

2".6 in 1".7 seeing) and no tail. Four 45-s i-band exposures taken on May 6 show a condensed 0".6 coma (FWHM 1".9 in 1".3 seeing) with no tail. Four 45-s w-band discovery observations on May 17 show a condensed 0".7 coma (FWHM 2".1 in 1".5 seeing) with no tail.