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Comet C/2020 O2  (Amaral)

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 O2     02/06/2022 00:36:22  17.05  16.41  16.00  15.69  15.27  14.72  11.3  18.5  B96

C/2020 O2     02/06/2022 00:36:22*  0.01   0.01   0.04   0.08   0.14   0.23     2   4.0  Gai

                                                                     AFRHO         LOG

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

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

C/2020 O2     02/06/2022 00:36:22    4.67   5.32   5.90  17.83   11    436    39  2.640  B96

FoCAs 3.66

www.astrosurf.com/cometas-obs

es.groups.yahoo.com/group/Cometas_Obs

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

http://cara.uai.it

Disvocery (CBET 4822:  COMET C/2020 O2)

Leonardo S. Amaral, Rio de Janeiro, Brazil, reports his discovery of a comet on three 60-s CCD exposures taken on 2020 July 23 with a 0.3-m f/4 reflector with magnitude about 18.1, noting the object to have a diffuse coma of diameter 13".  After the comet was posted on the Minor Planet Center's PCCP webpage, H.

Sato,

Tokyo, Japan, found a strongly condensed round coma 8" in diameter and no tail on nine stacked 60-s exposures taken remotely on July 30.4 UT with a 0.51-m f/6.8 astrograph at Siding Spring, NSW; the magnitude was 17.9 as measured within a circular aperture of radius 4".9.  E. Guido, Castellammare di Stabia, Italy, writes that sixteen stacked 90-s unfiltered exposures taken by a large group of observers remotely using a "Telescope Live" 0.6-m f/6.5 astrograph at El Sauce, Chile, on July 27.05 show a diffuse coma about 8" in diameter of mag 17.8-18.0.

     The available astrometry appears on MPEC 2020-P10.