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FoCAs 3.70
www.astrosurf.com/cometas-obs
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Astrometry of this comet (click) 

COD C23

CATALOG: Gaia DR2 - BAND: G
 
                                   10x10  20x20  30x30  40x40  50x50  60x60   SNR   SB   COD
OBJECT        DATE       TIME        +/-    +/-    +/-    +/-    +/-    +/-     N  FWHM  CAT
------------  ---------- --------  -----  -----  -----  -----  -----  -----  ----  ----  ---
C/2021 S4     04/03/2024 21:12:39  17.59  17.23  17.21  17.16  17.17  17.25   8.0  21.7  C23
C/2021 S4     04/03/2024 21:12:39*  0.06   0.09   0.09   0.13   0.18   0.24     3   3.9  Gai



                                                   APER              AfRho         Log
COMET         UTC                   DELTA    r      "     Mag   RSR    cm    +/-  AfRho  Obs
------------  -------------------   -----  -----  -----  -----  ---  -----  ----  -----  ---
C/2021 S4     04/03/2024 21:12:39    6.64   6.70   4.15  17.66    8   1646   206  3.216  C23