Comet C/2019 Y4 (ATLAS) - 21 april 2020

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 2020.04.22 12:15:39

NET Gaia DR2

CK19Y04e C2020 04 21.86426 05 54 37.39 +63 49 07.3 16.2 R B96

CK19Y04e C2020 04 21.87184 05 54 35.20 +63 48 57.5 16.9 G B96

CK19Y04e C2020 04 21.90172 05 54 27.62 +63 48 19.4 16.6 G B96

CK19Y04e C2020 04 21.91206 05 54 24.88 +63 48 03.9 16.7 G B96

CK19Y04e C2020 04 21.92046 05 54 22.55 +63 47 53.4 17.0 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

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C/2019 Y4e 21/04/2020 21:38:11 15.49 14.24 5.0 17.8 B96

C/2019 Y4e 21/04/2020 21:38:11* 0.08 0.11 4 3.5 Gai

AFRHO LOG

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

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

C/2019 Y4e Not enough boxes

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