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COMET C/2020 U4 (PANSTARRS)

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 U4     06/03/2021 20:59:05  19.03  19.12  18.52  18.45                 4.2  18.2  B96

C/2020 U4     06/03/2021 20:59:05*  0.07   0.07   0.19   0.83                   2   3.5  Gai

C/2020 U4     05/03/2022 19:33:58  18.53  18.06  18.15                        1.9  17.2  B96

C/2020 U4     05/03/2022 19:33:58*  0.00   0.00   0.00                          1   3.3  Gai

                                                                     AFRHO         LOG

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

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

C/2020 U4     06/03/2021 20:59:05    5.91   6.10   4.67  19.51    4    196    47  2.292  B96

C/2020 U4     05/03/2022 19:33:58    5.77   5.36   4.78  18.76    2    289   152  2.461  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

COMET C/2020 U4 (PANSTARRS) - (astro.vanbuitenene.nl)

Discovery (CBET 4880 )

M.P.E.C. 2020-U260

R. Weryk and Y. Ramanjooloo reported the discovery of a comet in four 45-second Pan-STARRS 1 (F51) images obtained on Oct. 22 UT.  They reported a 0".5 diffuse coma and 4" straight tail toward position angle 120 deg.

Subsequently, Weryk located prediscovery detections going back to Nov. 2019.

Prediscovery detections were also reported by Mount Lemmon Survey.  Additional reports of cometary features are as follows:

OC   Date        Reporter           Coma    Tail    PA          Exposures

F51  2020-10-03  R. Weryk           0".5      2"    120           4x45s

F51  2020-10-23  R. Weryk           0".5      4"    120           4x60s

H06  2020-10-24  H. Sato            6"                            8x120s

Z08  2020-10-28  E. Guido           10"                          16x120s

Last updated: 2021-03-06