comet C/2017 O1 - 25 july 2017

Astrometric data for minor planet center

COD G39

CON ROAD - Remote Observatory Atacama Desert , San Pedro de Atacama, Chile

OBS F.-J.Hambsch, E.Bryssinck

MEA E.Bryssinck

TEL 0.4-m f/6.8 astrograph + CCD

ACK MPCReport file updated 2017.07.25 18:42:31

AC2

NET CMC-15

CK17O010 C2017 07 25.41265 02 42 45.29 -08 32 20.1 15.0 N G39

CK17O010 C2017 07 25.41339 02 42 45.41 -08 32 18.7 15.0 N G39

CK17O010 C2017 07 25.41420 02 42 45.50 -08 32 16.9 14.8 N G39

CK17O010 C2017 07 25.41568 02 42 45.66 -08 32 15.3 14.8 N G39

CK17O010 C2017 07 25.41642 02 42 45.74 -08 32 14.5 14.9 N G39

CK17O010 C2017 07 25.41801 02 42 45.90 -08 32 13.5 14.9 N G39

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COD G39

CON ROAD - Remote Observatory Atacama Desert , San Pedro de Atacama, Chile, Oud

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 O1 25/07/2017 09:58:57 14.52 13.83 13.53 13.32 13.14 12.99 14.2 19.6 G39

C/2017 O1 25/07/2017 09:58:57* 0.13 0.18 0.25 0.32 0.38 0.43 3 3.7 CMC

AFRHO LOG

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

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

C/2017 O1 25/07/2017 09:58:57 1.62 1.87 17.01 14.03 14 216 15 2.335 G39

FoCAs 3.50

www.astrosurf.com/cometas-obs

es.groups.yahoo.com/group/Cometas_Obs

Af(rho) according CARA approach

Af(rho) vs distance to nucleus with R-Bessel filter

Multiplot Af(rho) graph with different ref. Stars from UCAC4 catalog