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Comet C2021 D2 (ZTF) - 21 july 2021

 (ZTF) - 14 june 2021

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 2021.07.22 12:00:03

NET Gaia DR2

    CK21D020  C2021 07 21.00833 19 08 10.21 +73 32 11.3          18.1 G      B96

    CK21D020  C2021 07 21.01487 19 08 08.55 +73 32 14.1          18.3 G      B96

    CK21D020  C2021 07 21.02140 19 08 06.65 +73 32 16.3          18.4 G      B96

----- end -----

COD X02

OBS BRIXIIS Observatory

CATALOG: Gaia DR2 - BAND: G

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

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

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

C/2021 D2     21/07/2021 00:26:07  18.21  18.16  18.25                        1.3  17.7  B96

C/2021 D2     21/07/2021 00:26:07*  0.23   0.38   0.37                          2   3.9  Gai

                                                                     AFRHO         LOG

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

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

C/2021 D2     21/07/2021 00:26:07    3.46   3.53   7.96  18.19    1     77    59  1.884  B96

Observation made with Orion Optics AG16 newton telescope from my backyard, BRIXIIS Observatory, Kruibeke, Belgium

Photometry obtained with FOCAS-II software:

Afρ data according CARA approach

Afρ vs core distance - data obtained from unfiltered CCD-image