comet 21P/GIACIOBINI-ZINNER

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 17/07/2018 23:34:15 12.82 12.04 11.63 11.37 11.19 11.05 35.7 18.4 B96

21P 17/07/2018 23:34:15* 0.05 0.04 0.03 0.02 0.02 0.02 16 3.6 USN

AFRHO LOG

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

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

21P 17/07/2018 23:34:15 0.70 1.27 39.19 11.42 36 207 6 2.315 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 2018.07.18 19:18:40

NET Gaia DR2

0021P C2018 07 17.96662 22 27 52.73 +59 33 13.7 13.2 R B96

0021P C2018 07 17.97414 22 27 54.85 +59 33 28.0 13.2 R B96

0021P C2018 07 17.97978 22 27 56.40 +59 33 38.5 13.2 R B96

0021P C2018 07 17.98542 22 27 58.01 +59 33 49.3 13.2 R B96

0021P C2018 07 17.99105 22 27 59.56 +59 33 59.9 13.1 R B96

0021P C2018 07 17.99853 22 28 01.49 +59 34 13.5 13.4 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