Comet C/2019 K7 (SMITH)

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Observation date	image	Photometry (FOCAS)	Afρ	astrometry	Observatory
20190615	X	X		X	Q62 - Siding Spring
20200622	X	X		X	B96 - BRIXIIS
20200625	X	X		X	B96 - BRIXIIS
20200710	X	X		X	B96 - BRIXIIS
20200720	X	X		X	B96 - BRIXIIS
20200730	X	X		X	B96 - BRIXIIS
20200818	X	X		X	B96 - BRIXIIS
20200905	X	X		X	B96 - BRIXIIS
20200913	X	X		X	B96 - BRIXIIS
20200914	X	X		X	B96 - BRIXIIS
20200918	X	X		X	B96 - BRIXIIS
20200920	X	X		X	B96 - BRIXIIS
20200921	X	X		X	B96 - BRIXIIS
20201022	X	X		X	B96 - BRIXIIS
20201104	X	X		X	B96 - BRIXIIS
20201106	X	X		X	B96 - BRIXIIS
20210608	X	X	X	X	B96 - BRIXIIS
20210907	X	X	X	X	B96 - BRIXIIS
20211024	X	X		X	B96 - BRIXIIS
20220421	X	X	X	X	B96 - BRIXIIS
20220428	X	X	X	X	B96 - BRIXIIS

Comet P/2019 K7 (SMITH)

Photometric data obtained from FOCAS-II software

COD Q62

CON E. Bryssinck, iTelescope.net

CATALOG: USNO A2.0 / CMC 14-15 - BAND: R

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

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

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

C/2019 K7 15/06/2019 18:00:23 16.78 16.63 16.72 14.4 18.6 Q62

C/2019 K7 15/06/2019 18:00:23* 0.05 0.09 0.09 7 3.2 CMC

C/2019 K7 22/06/2020 23:47:24 16.04 15.79 15.87 22.5 17.9 B96

C/2019 K7 22/06/2020 23:47:24* 0.04 0.13 0.13 3 3.6 Gai

C/2019 K7 25/06/2020 00:09:39 15.73 15.40 15.42 22.4 18.2 B96

C/2019 K7 25/06/2020 00:09:39* 0.03 0.02 0.02 2 3.6 Gai

C/2019 K7 10/07/2020 23:14:05 15.72 15.58 15.68 20.6 18.2 B96

C/2019 K7 10/07/2020 23:14:05* 0.07 0.15 0.15 2 3.5 Gai

C/2019 K7 20/07/2020 22:59:25 15.81 15.52 15.62 24.4 18.3 B96

C/2019 K7 20/07/2020 22:59:25* 0.04 0.07 0.07 2 3.5 Gai

C/2019 K7 30/07/2020 23:45:47 15.62 15.27 15.13 15.10 15.15 15.22 18.4 18.1 B96

C/2019 K7 30/07/2020 23:45:47* 0.00 0.01 0.04 0.06 0.12 0.16 2 3.6 Gai

C/2019 K7 18/08/2020 21:13:33 15.92 15.70 15.71 15.75 21.7 18.5 B96

C/2019 K7 18/08/2020 21:13:33* 0.03 0.01 0.01 0.04 2 4.3 Gai

C/2019 K7 05/09/2020 21:02:24 16.14 15.77 15.70 15.79 21.3 18.2 B96

C/2019 K7 05/09/2020 21:02:24* 0.00 0.01 0.02 0.04 2 3.8 Gai

C/2019 K7 14/09/2020 21:53:54 16.30 15.84 15.80 7.7 16.6 B96

C/2019 K7 14/09/2020 21:53:54* 0.12 0.04 0.09 2 3.5 Gai

C/2019 K7 18/09/2020 21:32:38 16.35 16.00 16.07 15.9 17.8 B96

C/2019 K7 18/09/2020 21:32:38* 0.00 0.06 0.09 2 4.0 Gai

C/2019 K7 20/09/2020 20:57:06 16.25 15.92 15.81 15.77 15.87 13.6 18.0 B96

C/2019 K7 20/09/2020 20:57:06* 0.02 0.02 0.04 0.08 0.12 2 4.0 Gai

C/2019 K7 21/09/2020 20:47:35 16.00 15.53 15.39 15.39 15.40 15.39 17.8 17.7 B96

C/2019 K7 21/09/2020 20:47:35* 0.08 0.18 0.16 0.13 0.10 0.11 2 3.5 Gai

C/2019 K7 22/10/2020 18:08:01 16.47 16.16 15.99 15.91 15.90 18.9 17.9 B96

C/2019 K7 22/10/2020 18:08:01* 0.04 0.07 0.06 0.09 0.11 2 3.1 Gai

C/2019 K7 04/11/2020 18:31:41 16.57 16.21 16.18 12.9 17.6 B96

C/2019 K7 04/11/2020 18:31:41* 0.02 0.13 0.17 3 3.7 Gai

C/2019 K7 06/11/2020 18:23:12 16.48 16.14 16.05 16.00 15.1 17.8 B96

C/2019 K7 06/11/2020 18:23:12* 0.01 0.03 0.04 0.12 2 4.0 Gai

C/2019 K7 08/06/2021 00:42:45 17.10 16.89 16.62 16.59 16.46 16.47 9.2 18.0 B96

C/2019 K7 08/06/2021 00:42:45* 0.00 0.00 0.00 0.00 0.00 0.00 1 3.7 Gai

C/2019 K7 24/10/2021 18:31:43 17.55 17.13 16.95 16.95 6.1 18.1 B96

C/2019 K7 24/10/2021 18:31:43* 0.04 0.05 0.01 0.02 2 3.9 Gai

C/2019 K7 21/04/2022 00:21:06 18.08 17.70 17.79 8.1 18.2 B96

C/2019 K7 21/04/2022 00:21:06* 0.16 0.07 0.07 2 4.0 Gai

C/2019 K7 28/04/2022 00:36:06 18.00 17.62 17.67 9.1 18.0 B96

C/2019 K7 28/04/2022 00:36:06* 0.03 0.24 0.19 2 3.8 Gai

AFRHO LOG

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

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

C/2019 K7 Orbital elements not found

C/2019 K7 22/06/2020 23:47:24 3.74 4.48 7.37 16.06 23 1015 45 3.007 B96

C/2019 K7 25/06/2020 00:09:39 3.73 4.48 7.40 15.79 22 1292 58 3.111 B96

C/2019 K7 10/07/2020 23:14:05 3.65 4.48 7.55 15.71 21 1341 65 3.128 B96

C/2019 K7 20/07/2020 22:59:25 3.65 4.48 7.55 15.83 24 1206 49 3.081 B96

C/2019 K7 30/07/2020 23:45:47 3.69 4.49 7.48 15.58 18 1541 84 3.188 B96

C/2019 K7 18/08/2020 21:13:33 3.84 4.50 7.18 15.92 22 1235 57 3.092 B96

C/2019 K7 05/09/2020 21:02:24 4.06 4.52 6.79 16.18 21 1093 51 3.039 B96

C/2019 K7 14/09/2020 21:53:54 4.19 4.53 6.58 16.47 8 900 117 2.954 B96

C/2019 K7 18/09/2020 21:32:38 4.25 4.54 6.49 16.43 16 959 60 2.982 B96

C/2019 K7 20/09/2020 20:57:06 4.28 4.54 6.44 16.29 14 1103 81 3.043 B96

C/2019 K7 21/09/2020 20:47:35 4.30 4.54 6.42 16.02 18 1429 80 3.155 B96

C/2019 K7 22/10/2020 18:08:01 4.76 4.59 5.79 16.64 19 1013 54 3.006 B96

C/2019 K7 04/11/2020 18:31:41 4.94 4.62 5.58 16.76 13 989 77 2.995 B96

C/2019 K7 06/11/2020 18:23:12 4.96 4.62 5.56 16.65 15 1104 73 3.043 B96

C/2019 K7 08/06/2021 00:42:45 5.04 5.31 5.47 17.33 9 803 87 2.905 B96

C/2019 K7 24/10/2021 18:31:43 6.24 5.94 4.42 17.88 6 932 153 2.970 B96

C/2019 K7 21/04/2022 00:21:06 6.70 6.88 4.12 18.29 8 983 121 2.992 B96

C/2019 K7 28/04/2022 00:36:06 6.76 6.92 4.08 18.25 9 1051 115 3.021 B96

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

http://cara.uai.it

MPEC N12: COMET C/2019 K7 (Smith)

COMET C/2019 K7 (Smith)

This object was reported as cometary by A. Heinze (T05) in discovery images obtained on 2019 May 30 UT: "This object is extended relative to nearby field stars of similar brightness on all four images. We find the FWHM to be larger with at least 7 sigma significance relative to field stars, with an average FWHM excess amounting to 5.5 arcsec in quadrature.

A faint tail at least 20 arcseconds long extends toward the south-southeast, at a position angle of about 160 degrees." Other reports of cometary features are summarized below:

OC Date Reporter Coma Tail

I47 June 1 M. Masek 14" in P.A. 160 (20 x 60s)

N55 June 1 D. W. E. Green 6" ~20" in P.A. 141-169 (19 x 40s)

N55 June 2 D. W. E. Green 6" ~15" in P.A. ~176 (19 x 40s)

K91 June 2 J. D. Armstrong 20"

I47 June 4 M. Masek 12" 25" in P.A. 150 (17 x 60s)

Q62 June 4 R. Ligustri ~70" in P.A. 150 (4 x 300s)

Q62 June 4 H. Sato 12" 2" in P.A. 340 (6 x 60s)

Q62 June 5 A. Valvasori ~13" ~37" in P.A. 158

N55 June 5 D. W. E. Green 6"x9" (19 x 40s)

N55 June 6 D. W. E. Green ~8" ~12" in P.A. ~156 (19 x 40s)

N55 June 7 D. W. E. Green ~7" ~20" in P.A. ~153 (20 x 40s)

N55 June 8 D. W. E. Green ~3' in P.A. ~144 (3 x 40s)

N55 June 9 D. W. E. Green 5"-7" ~40" in P.A. ~160 (19 x 40s)

N55 June 10 D. W. E. Green 4"-5" ~40" in P.A. ~155 (30 x 40s)

N55 June 12 D. W. E. Green 5"-7" in P.A. 150 and 330 (15 x 40s)

N55 June 14 D. W. E. Green 6"-7" ~30" in P.A. ~154 (19 x 40s)

Q62 June 15 E. Bryssinck 11" 45" in P.A. 147

E94 June 17 J. Drummond ~60" in P.A. ~158 (13 x 60s)

X74 June 25 L. S. Amaral ~16" (3 x 60s)

Q38 June 27 M. Mattiazzo 2' in P.A. 144

850 July 1 D. T. Durig 11" 27" in P.A. 147 (378 x 10s)