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 2018.06.19 12:34:47

NET USNO-A2.0

CK17M040 C2018 06 18.90013 18 00 57.69 +45 26 39.2 15.5 R B96

CK17M040 C2018 06 18.90177 18 00 57.47 +45 26 38.1 15.6 R B96

CK17M040 C2018 06 18.90340 18 00 57.23 +45 26 37.6 15.5 R B96

CK17M040 C2018 06 18.90503 18 00 57.06 +45 26 36.9 15.5 R B96

CK17M040 C2018 06 18.90668 18 00 56.83 +45 26 36.1 15.5 R B96

CK17M040 C2018 06 18.90840 18 00 56.57 +45 26 35.2 15.5 R B96

CK17M040 C2018 06 18.91005 18 00 56.37 +45 26 34.8 15.5 R B96

CK17M040 C2018 06 18.91168 18 00 56.16 +45 26 33.8 15.5 R B96

CK17M040 C2018 06 18.91332 18 00 55.92 +45 26 32.9 15.5 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 18/06/2018 21:47:33 15.24 14.58 14.30 14.17 14.15 14.17 21.7 17.4 B96

C/2017 M4 18/06/2018 21:47:33* 0.02 0.04 0.03 0.05 0.05 0.06 5 3.6 USN

AFRHO LOG

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

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

C/2017 M4 18/06/2018 21:47:33 3.34 3.82 8.27 15.23 22 1268 58 3.103 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