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Astrometric data for minor planet center

COD B96

CON E. Bryssinck, BRIXIIS Observatory, 9150 Kruibeke , Belgium

OBS E. Bryssinck

MEA E. Bryssinck

TEL 0.4-m f/3.8 reflector + CCD

ACK MPCReport file updated 2023.09.01 13:40:52

NET Gaia DR2

0012P         C2023 08 21.84338 17 33 21.06 +53 38 33.9          16.1 R      B96

0012P         C2023 08 21.85168 17 33 20.51 +53 38 30.3          16.6 G      B96

0012P         C2023 08 21.86313 17 33 19.89 +53 38 25.0          16.5 G      B96

0012P         C2023 08 21.87458 17 33 19.15 +53 38 18.9          16.6 G      B96

Comet 12P/PONS-BROOKS - 21 aug. 2023

Photometric data obtained by use of FOCAS-II software

                                   10x10  20x20  30x30  40x40  50x50  60x60   SNR   SB   COD

COMET         UTC                    +/-    +/-    +/-    +/-    +/-    +/-     N  FWHM  CAT

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

12P           21/08/2023 20:51:09  16.23  15.46  15.00  14.61  14.31  14.07  18.5  17.7  B96

12P           21/08/2023 20:51:09*  0.05   0.08   0.06   0.07   0.06   0.04     2   2.8  Gai

                                                                     AFRHO         LOG

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

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

12P           21/08/2023 20:51:09    3.34   3.55   8.25  16.50   19    339    18  2.530  B96

image taken from BRIXIIS observatory, Kruibeke, Belgium - MPC B96.

telescope: Orion Optics AG16 - astrograph 0.4-m

camera: SBIG STL6303

with CLEAR and Bessel-R (Custom Scientific)

Af(rho) parameter according CARA-approach

Af(rho) vs core distance - data from photometric R-filtered CCD-image