Comet C/2019 Y4 (ATLAS) - 14 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 2020.04.15 17:52:31

NET Gaia DR2

CK19Y04a C2020 04 14.86264 06 27 45.61 +66 03 24.2 15.1 R B96

CK19Y04b C2020 04 14.87292 06 27 42.68 +66 03 13.2 15.0 R B96

CK19Y04a C2020 04 14.88144 06 27 39.90 +66 03 04.1 15.6 G B96

CK19Y04a C2020 04 14.90853 06 27 31.43 +66 02 35.5 15.7 G B96

----- end -----

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 Y4a 14/04/2020 21:23:13 14.85 13.74 13.09 12.63 12.28 11.99 8.1 18.2 B96

C/2019 Y4a 14/04/2020 21:23:13* 0.03 0.04 0.03 0.03 0.02 0.02 11 3.7 Gai

AFRHO LOG

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

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

C/2019 Y4a 14/04/2020 21:23:13 1.00 1.21 27.61 13.23 8 72 9 1.859 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