Comet C/2020 R4 (ATLAS) - 22 april 2021

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

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 2021.04.24 11:51:27

NET Gaia DR2

CK20R040 C2021 04 22.90037 16 25 24.09 +27 34 50.7 13.5 R B96

CK20R040 C2021 04 22.90330 16 25 20.77 +27 35 06.7 13.5 R B96

CK20R040 C2021 04 22.90593 16 25 17.77 +27 35 21.5 14.0 G B96

CK20R040 C2021 04 22.90927 16 25 13.98 +27 35 40.2 14.1 G B96

CK20R040 C2021 04 22.91397 16 25 08.60 +27 36 06.0 14.0 G B96

CK20R040 C2021 04 22.92317 16 24 58.11 +27 36 57.1 14.0 G B96

CK20R040 C2021 04 22.93028 16 24 49.99 +27 37 36.6 14.0 G B96

----- end -----

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 R4 22/04/2021 22:03:10 13.68 12.96 12.58 12.28 12.05 11.86 26.1 17.3 B96

C/2020 R4 22/04/2021 22:03:10* 0.02 0.03 0.03 0.03 0.03 0.03 52 3.2 Gai

AFRHO LOG

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

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

C/2020 R4 22/04/2021 22:03:10 0.46 1.34 59.45 11.88 26 66 3 1.818 B96

FoCAs 3.66

www.astrosurf.com/cometas-obs

es.groups.yahoo.com/group/Cometas_Obs

Afρ-parameter according CARA-approach