Comet C/2019 Y4 (ATLAS)

Astrometric data for minor planet center

ACK MPCReport file updated 2020.04.07 08:10:53

NET Gaia DR2

CK19Y04a C2020 04 06.91967 07 13 52.52 +67 52 14.1 14.0 RVEJ016B96

CK19Y04b C2020 04 06.91967 07 13 52.52 +67 52 14.1 14.0 RVEJ016B96

CK19Y04a C2020 04 06.94590 07 13 42.30 +67 51 57.2 14.5 GVEJ016B96

CK19Y04b C2020 04 06.94590 07 13 42.30 +67 51 57.2 14.5 GVEJ016B96

CK19Y04a C2020 04 06.95080 07 13 40.45 +67 51 54.0 14.6 GVEJ016B96

CK19Y04b C2020 04 06.95080 07 13 40.45 +67 51 54.0 14.6 GVEJ016B96

CK19Y04b C2020 04 06.95568 07 13 38.73 +67 51 50.3 14.6 GVEJ016B96

CK19Y04a C2020 04 06.96382 07 13 35.38 +67 51 45.8 14.5 GVEJ016B96

CK19Y04b C2020 04 06.96382 07 13 35.38 +67 51 45.8 14.5 GVEJ016B96

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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 Y4a 06/04/2020 22:57:44 13.85 12.76 12.21 11.86 11.59 11.38 11.2 17.6 B96

C/2019 Y4a 06/04/2020 22:57:44* 0.03 0.03 0.03 0.03 0.03 0.03 3 3.5 Gai

AFRHO LOG

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

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

C/2019 Y4a 06/04/2020 22:57:44 1.03 1.36 26.88 12.42 11 202 18 2.306 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