comet 21P/GIACIOBINI-ZINNER - 2 july 00:17 UT 2018

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

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

21P 02/07/2018 00:14:21 13.72 12.96 12.63 12.42 12.26 12.14 21.9 18.0 B96

21P 02/07/2018 00:14:21* 0.02 0.04 0.04 0.05 0.05 0.04 6 3.9 USN

AFRHO LOG

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

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

21P 02/07/2018 00:14:21 0.84 1.40 32.83 12.61 22 120 5 2.080 B96

Astrometry obtained with Astrometrica

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 2018.07.03 21:06:47

0021P C2018 07 01.98337 21 31 20.50 +50 41 54.7 14.0 R B96

0021P C2018 07 01.98808 21 31 21.23 +50 42 04.7 14.0 R B96

0021P C2018 07 01.99183 21 31 21.77 +50 42 11.7 14.0 R B96

0021P C2018 07 01.99748 21 31 22.69 +50 42 24.2 14.0 R B96

0021P C2018 07 02.00425 21 31 23.64 +50 42 37.5 14.1 R B96

0021P C2018 07 02.01406 21 31 25.29 +50 42 58.7 14.0 R B96

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Afρ parameter according to CARA consortium

Afρ-graph (Afρ vs distance to core) with R-Bessel filter

Af(rho) data available via a request to our CARA-coordinator