comet 132P/HELIN-ROMAN-ALU

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Observation date	image	Photometry (FOCAS)	Afρ	astrometry	Observatory
20210905	X	X	X	X	B96 (BRIXIIS)
20210915	X	X	X	X	B96 (BRIXIIS)
20211004	X	X		X	B96 (BRIXIIS)
20211024	X	X		X	B96 (BRIXIIS)
20211027	X	X	X	X	B96 (BRIXIIS)
20211108	X	X	X	X	B96 (BRIXIIS)
20211122	X	X	X	X	B96 (BRIXIIS)
20211208	X	X	X	X	B96 (BRIXIIS)
20220124	X	X	X	X	B96 (BRIXIIS)
20220211	X	X	X	X	B96 (BRIXIIS)

132P/Helin-Roman-Alu (1989y)

Photometric data obtained by use of FOCAS-II software

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

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

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

132P 05/09/2021 22:04:20 16.07 15.72 15.48 15.55 15.59 15.67 8.9 16.6 B96

132P 05/09/2021 22:04:20* 0.06 0.12 0.05 0.10 0.20 0.31 3 3.8 Gai

132P 15/09/2021 22:01:53 15.50 15.11 14.89 14.82 14.79 14.82 17.9 17.5 B96

132P 15/09/2021 22:01:53* 0.02 0.05 0.07 0.04 0.07 0.09 3 4.0 Gai

132P 24/10/2021 21:11:38 14.68 14.08 13.88 13.77 13.71 13.68 19.9 17.4 B96

132P 24/10/2021 21:11:38* 0.03 0.12 0.12 0.13 0.14 0.13 3 3.5 Gai

132P 27/10/2021 22:51:33 14.78 14.25 14.06 13.95 13.87 13.81 26.6 17.9 B96

132P 27/10/2021 22:51:33* 0.01 0.02 0.03 0.02 0.02 0.01 3 3.9 Gai

132P 08/11/2021 20:49:12 14.97 14.43 14.23 14.09 14.03 13.99 26.6 17.4 B96

132P 08/11/2021 20:49:12* 0.01 0.03 0.05 0.05 0.07 0.08 3 3.8 Gai

132P 08/12/2021 20:07:50 15.70 15.12 14.87 14.72 14.63 14.55 17.4 17.6 B96

132P 08/12/2021 20:07:50* 0.04 0.10 0.13 0.17 0.23 0.27 3 4.0 Gai

132P 24/01/2022 19:00:12 16.06 15.35 15.04 14.89 14.80 14.75 8.3 17.7 B96

132P 24/01/2022 19:00:12* 0.03 0.06 0.07 0.02 0.05 0.07 3 3.3 Gai

132P 11/02/2022 19:32:50 17.11 16.50 16.17 16.06 16.00 6.3 17.5 B96

132P 11/02/2022 19:32:50* 0.04 0.12 0.18 0.26 0.25 2 3.9 Gai

AFRHO LOG

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

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

132P 05/09/2021 22:04:20 0.85 1.82 32.44 15.66 9 13 1 1.097 B96

132P 15/09/2021 22:01:53 0.79 1.79 34.77 14.93 18 21 1 1.314 B96

132P 24/10/2021 21:11:38 0.76 1.70 36.32 13.86 20 46 2 1.662 B96

132P 27/10/2021 22:51:33 0.77 1.70 35.88 14.02 27 40 2 1.605 B96

132P 08/11/2021 20:49:12 0.82 1.69 33.68 14.23 27 38 1 1.576 B96

132P 08/12/2021 20:07:50 1.03 1.71 26.90 15.00 17 30 2 1.471 B96

132P 24/01/2022 19:00:12 1.52 1.84 18.15 15.52 8 47 6 1.668 B96

132P 11/02/2022 19:32:50 1.75 1.91 15.73 16.73 6 22 3 1.341 B96

132P on Kronk’s cometography

Comet 132P/Helin-Roman-Alu (astro.vanbuitenen)

Discovery:

Eleanor F. Helin reports the discovery by Jeff Alu and herself, using the Palomar 0.46-m Schmidt telescope, of another comet on 1989 oct. 26 . The object is slightly diffuse with a very faint tail toward the west with magnitude about 16. B. Roman and K. Lawrence assisted with the observations. the comet was preleminary assigned as comet 1989y via IAU Circ., No. 4886 issued on 1989 oct. 30.

Recovery:

The comet was expected to return to perihelion during 1997. It was recovered by C. W. Hergenrother using the Smithsonian Astrophysical Observatory's 1.2-m reflector on Mt. Hopkins on 1997 July 13.46. The image showed a slight diffuseness. Further images on July 14 confirmed this was the comet and the nuclear magnitude was determined as 19.6. A short tail was also visible in PA 250 degrees. The precise positions indicated the prediction by B. G. Marsden (Central Bureau for Astronomical Telegrams) required a correction of -0.6 day. The comet passed perihelion on 1997 November 10. It did not exceed a brightness of magnitude 17.