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Comet 99P/KOWAL -
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Data obtained by use of FOCAS-
10x10 20x20 30x30 40x40 50x50 60x60 SNR SB COD
OBJECT DATE TIME +/-
-
99P 12/04/2021 21:26:05 18.14 17.75 17.49 17.18 17.02 16.84 6.8 18.2 B96
99P 12/04/2021 21:26:05* 0.04 0.03 0.15 0.14 0.02 0.03 2 3.8 Gai
99P 16/04/2021 21:36:19 18.30 18.23 18.13 18.08 5.8 17.9 B96
99P 16/04/2021 21:36:19* 0.30 0.45 0.34 0.40 3 3.6 Gai
99P 27/03/2022 23:44:32 17.33 17.01 16.98 5.0 16.9 B96
99P 27/03/2022 23:44:32* 0.01 0.09 0.22 2 3.6 Gai
99P 27/04/2022 22:01:56 17.14 16.66 16.55 16.53 7.8 17.1 B96
99P 27/04/2022 22:01:56* 0.02 0.00 0.08 0.03 2 3.9 Gai
AFRHO LOG
COMET UTC DELTA r BOX " MAG RSR CM +/-
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99P 12/04/2021 21:26:05 4.15 4.90 6.64 18.50 7 158 23 2.200 B96
99P 16/04/2021 21:36:19 4.20 4.90 6.57 18.38 6 180 31 2.256 B96
99P 27/03/2022 23:44:32 3.75 4.71 7.36 17.41 5 325 65 2.512 B96
99P 27/04/2022 22:01:56 3.73 4.71 7.39 17.22 8 384 49 2.585 B96
Discovery:
Charles T. Kowal (Palomar Observatory, California, USA) discovered this comet on a photographic plate exposed with the 122-
The comet was already passed perihelion when found in 1977 and remained visible until June 17, when near magnitude 19.
Using observations obtained from April 24 through May 19, B. G. Marsden computed an elliptical orbit with a period of 18.6 years. As further observations were obtained the period was revised. During 1979 Marsden gave the period as 15.11 years and said the short observational arc brought about an uncertainty of about 2 weeks
Charles Thomas Kowal (November 8, 1940 – November 28, 2011) was an American astronomer known for his observations and discoveries in the Solar System. Kowal also discovered or co-