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Comet C/2021 P4 (ATLAS) - 22 nov. 2021

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

http://cara.uai.it

Astrometric data for minor planet center

COD B96

CON E. Bryssinck, BRIXIIS Observatory, 9150 Kruibeke , Belgium

OBS E. Bryssinck

MEA E. Bryssinck

TEL 0.4-m f/3.8 reflector + CCD

ACK MPCReport file updated 2021.11.26 10:19:03

NET Gaia DR2

    CK21P040  C2021 11 22.73007 22 36 36.16 +58 30 37.8          17.5 G      B96

    CK21P040  C2021 11 22.73660 22 36 36.06 +58 30 31.8          18.4 G      B96

----- end -----

COD L81

OBS BRIXIIS Observatory

CATALOG: Gaia DR2 - BAND: G

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

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

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

C/2021 P4     22/11/2021 17:36:00  17.05  16.75  16.43  16.04  15.80  15.54   8.2  18.2  B96

C/2021 P4     22/11/2021 17:36:00*  0.25   0.35   0.38   0.43   0.40   0.38     2   3.9  Gai

                                                                     AFRHO         LOG

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

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

C/2021 P4     22/11/2021 17:36:00    3.08   3.58   8.95  17.29    8    142    17  2.152  B96

Observation made on nov. 22  by use of a my 0.4-m f/3.8 newton telescope in my backyard

Photometry obtained with FOCAS-II software: