comet C/2017 M4 (ATLAS)

Astrometric data for minor planet center

COD B96

CON BRIXIIS Observatory - Eyckensbeekstraat 2, B-9150 Kruibeke, Belgium

OBS E.Bryssinck

MEA E.Bryssinck

TEL 0.4-m f/3.8 astrograph + CCD

ACK MPCReport file updated 2018.06.21 10:42:02

NET USNO-A2.0

CK17M040 C2018 06 20.90025 17 56 35.15 +45 09 50.7 15.6 R B96

CK17M040 C2018 06 20.90190 17 56 34.95 +45 09 49.9 15.6 R B96

CK17M040 C2018 06 20.90353 17 56 34.72 +45 09 48.8 15.6 R B96

CK17M040 C2018 06 20.90516 17 56 34.52 +45 09 48.2 15.6 R B96

CK17M040 C2018 06 20.90681 17 56 34.29 +45 09 47.2 15.6 R B96

CK17M040 C2018 06 20.90853 17 56 34.07 +45 09 46.5 15.6 R B96

CK17M040 C2018 06 20.91016 17 56 33.82 +45 09 45.5 15.7 R B96

CK17M040 C2018 06 20.91181 17 56 33.63 +45 09 44.6 15.7 R B96

CK17M040 C2018 06 20.91344 17 56 33.40 +45 09 44.0 15.7 R B96

Photometric data obtained by use of FOCAS-II software

COD B96

CON BRIXIIS Observatory - Eyckensbeekstraat 2, B-9150 Kruibeke, Belgium

CATALOG: USNO A2.0 / CMC 14-15 - BAND: R

10x10 20x20 30x30 40x40 50x50 60x60 SNR SB COD

COMET UTC +/- +/- +/- +/- +/- +/- N FWHM CAT

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

C/2017 M4 20/06/2018 21:47:44 15.37 14.68 14.42 14.30 14.27 14.28 24.3 17.6 B96

C/2017 M4 20/06/2018 21:47:44* 0.02 0.02 0.03 0.03 0.05 0.07 5 3.7 USN

AFRHO LOG

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

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

C/2017 M4 20/06/2018 21:47:44 3.32 3.81 8.30 15.35 24 1120 46 3.049 B96

FoCAs 3.50

www.astrosurf.com/cometas-obs

es.groups.yahoo.com/group/Cometas_Obs

Afρ parameter according to CARA consortium

Afρ vs distance to core - with R-Bessel filter

Afρ data available via request to the CARA-Coordinator