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Comet C2021 D2 (ZTF) - 27 oct. 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 2021.10.31 09:39:29

NET Gaia DR2

    CK21D020  C2021 10 27.89396 15 42 17.63 +62 31 45.5          17.8 G      B96

    CK21D020  C2021 10 27.89885 15 42 17.87 +62 31 41.3          17.7 G      B96

    CK21D020  C2021 10 27.90374 15 42 18.26 +62 31 40.4          17.4 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     27/10/2021 21:37:52  18.19  17.51  17.61  17.28  17.01  16.98   2.8  17.3  B96

C/2021 D2     27/10/2021 21:37:52*  0.02   0.12   0.11   0.25   0.24   0.09     2   3.5  Gai

                                                                     AFRHO         LOG

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

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

C/2021 D2     27/10/2021 21:37:52    3.16   3.11   8.72  18.24    3     47    17  1.673  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