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Comet C/2020 S4  (PANSTARRS) -  17 may 2023

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

http://cara.uai.it

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 2023.05.18 16:05:54

NET Gaia DR2

    CK20S040  C2023 05 17.93152 09 53 47.16 +27 38 17.0          17.2 G      B96

    CK20S040  C2023 05 17.93644 09 53 47.40 +27 38 15.7          17.1 G      B96

    CK20S040  C2023 05 17.94135 09 53 47.66 +27 38 14.2          17.4 G      B96

Photometric data obtained from FOCAS-II software

COD B96

OBS BRIXIIS Observatory

CATALOG: Gaia DR2 - BAND: G

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

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

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

C/2020 S4     17/05/2023 22:32:00  16.98  16.38  16.11  15.94  15.72  15.29   8.4  17.7  B96

C/2020 S4     17/05/2023 22:32:00*  0.05   0.07   0.06   0.02   0.04   0.01     2   3.3  Gai

                                                                     AFRHO         LOG

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

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

C/2020 S4     17/05/2023 22:32:00    3.43   3.49   8.03  17.20    8    182    22  2.261  B96

Af(rho) data according CARA-approach

Af(rho) (cm) vs. core distance (km) - data from Bessel-R CCD-image