Comet C/2017 S3 (PANSTARRS)

Astrometric data for minor planet center

COD I89

CON iTelescope.net, remote observatory, Nerpio, Spain,

OBS E.Bryssinck

MEA E.Bryssinck

TEL 0.43-m f/6.8 reflector + CCD

ACK MPCReport file updated 2018.07.04 07:20:23

NET USNO-A2.0

CK17S030 C2018 07 04.14079 03 18 13.33 +59 17 27.4 14.2 R I89

CK17S030 C2018 07 04.14666 03 18 15.24 +59 17 26.2 14.6 R I89

CK17S030 C2018 07 04.15231 03 18 17.10 +59 17 25.2 14.6 R I89

CK17S030 C2018 07 04.15720 03 18 18.63 +59 17 24.3 14.4 R I89

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Photometric data obtained by use of FOCAS-II software

COD I89

CON iTelescope.net, remote observatory, Nerpio, Spain

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 S3 04/07/2018 03:35:56 13.51 12.62 12.10 11.72 11.43 11.20 17.9 17.1 I89

C/2017 S3 04/07/2018 03:35:56* 0.31 0.43 0.49 0.53 0.56 0.59 8 3.0 USN

AFRHO LOG

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

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

C/2017 S3 04/07/2018 03:35:56 1.48 1.17 18.60 12.71 18 239 13 2.379 I89

FoCAs 3.53

www.astrosurf.com/cometas-obs

es.groups.yahoo.com/group/Cometas_Obs

Af(rho) data according the CARA-approach is available via request to CARA-coordinator

Af(rho) parameter according to CARA-approach

Af(rho) [cm] vs core distance - data obtained from image with R-Bessel filter