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 2020.04.08 19:36:45

NET Gaia DR2

CK19Y04a C2020 04 07.82612 07 08 06.65 +67 42 44.0 14.8 G B96

CK19Y04b C2020 04 07.84775 07 07 58.86 +67 42 29.7 14.9 G B96

CK19Y04b C2020 04 07.89476 07 07 40.94 +67 41 57.2 14.8 G B96

CK19Y04b C2020 04 07.90690 07 07 36.22 +67 41 48.9 14.9 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 Y4b 07/04/2020 20:56:36 14.05 13.03 12.48 12.09 11.81 11.59 7.2 16.0 B96

C/2019 Y4b 07/04/2020 20:56:36* 0.05 0.06 0.06 0.05 0.04 0.04 59 4.0 Gai

AFRHO LOG

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

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

C/2019 Y4b 07/04/2020 20:56:36 1.02 1.35 26.96 12.65 7 159 22 2.200 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