Comet C/2019 Y4 (ATLAS)

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 2020.04.02 23:42:46

NET Gaia DR2

CK19Y040 C2020 04 01.82058 07 48 34.81 +68 28 28.1 13.8 G B96

CK19Y040 C2020 04 01.84027 07 48 26.23 +68 28 23.1 13.7 G B96

CK19Y040 C2020 04 01.85005 07 48 21.98 +68 28 20.7 13.7 G B96

CK19Y040 C2020 04 01.85999 07 48 17.63 +68 28 18.3 13.7 G B96

CK19Y040 C2020 04 01.87151 07 48 12.72 +68 28 15.2 13.7 G B96

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

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/2019 Y4 01/04/2020 20:27:42 13.24 12.28 11.78 11.44 11.20 11.00 21.3 17.7 B96

C/2019 Y4 01/04/2020 20:27:42* 0.04 0.06 0.08 0.09 0.10 0.11 24 3.2 Gai

AFRHO LOG

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

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

C/2019 Y4 01/04/2020 20:27:42 1.04 1.46 26.45 11.98 21 360 17 2.556 B96

FoCAs 3.66

www.astrosurf.com/cometas-obs

es.groups.yahoo.com/group/Cometas_Obs

Afρ parameter according CARA-Approach

Afρ [cm] vs. core distance (in km) - image with Bessel R filter