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COMET C/2020 Y3 (ATLAS)

Photometric data obtained from FOCAS-II software

OBS BRIXIIS Observatory

CATALOG: Gaia DR2 - BAND: G

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

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

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C/2020 Y3     15/01/2021 07:41:54  18.20  17.76  17.60  17.59                 4.3  19.8  G39

C/2020 Y3     15/01/2021 07:41:54*  0.12   0.12   0.29   0.51                   3   4.2  Gai

                                                                     AFRHO         LOG

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

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

C/2020 Y3     Orbital elements not found

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

http://cara.uai.it

COMET C/2020 Y3 (ATLAS) (astro.vanbuitenen.nl)

Discovery:  CBET 4912:  COMET C/2020 Y3

M.P.E.C. 2021-A195: COMET C/2020 Y3 (ATLAS)

    L. Denneau reports the discovery of a diffuse comet in survey images obtained by ATLAS-MLO (T08) on 2020 Dec 28 UT, noting a 5".4 condensed coma.  Additional reports of cometary features are as follows:

OC   Date        Reporter           Coma    Tail    PA          Exposures

807  2020-12-29  T. Linder          4"     10"      290-315

H06  2020-12-29  H. Sato            8"                           14x60s

W85  2020-12-30  P. Breitenstein    6"     10"      260           5x80

K91  2020-12-30  L. Kurtze          6"     13"      250          10x80s

W88  2020-12-31  B. Lutkenhoner     6"