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COMET C/2021 S3 (PANSTARRS)

Photometric data obtained from FOCAS-II software

CATALOG: Gaia DR2 - BAND: G

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

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

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

                                                                     AFRHO         LOG

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

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

http://cara.uai.it

Comet C/2021 S3 (PANSTARRS) (astro.vanbuitenen.nl)

Discovery:  (CBET 5051)

     R. Weryk reports the discovery of a comet in four 45-second w-band survey images taken on Sep. 24 UT by Pan-STARRS 2 (F52), noting a diffuse 0".3 coma.

Additional reports of cometary features are as follows:

OC   Date        Reporter           Coma    Tail    PA          Exposures

F51  2021-09-28  R. Weryk           0".5                          2x60s

X02  2019-10-04  E. Bryssinck       6"                           10x180s    

F52  2021-10-04  R. Weryk           0".5                          4x45s

Source: MPEC 2021-T166: COMET C/2021 S3 (PANSTARRS)