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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 2020.04.05 13:32:48

NET Gaia DR2

    CK19Y04a  C2020 04 04.85144 07 27 30.77 +68 10 41.3          13.6 R      B96

    CK19Y04a  C2020 04 04.85307 07 27 30.00 +68 10 40.8          13.5 R      B96

    CK19Y04a  C2020 04 04.85813 07 27 27.80 +68 10 38.2          14.1 G      B96

    CK19Y04a  C2020 04 04.85976 07 27 27.25 +68 10 37.3          14.1 G      B96

    CK19Y04a  C2020 04 04.86139 07 27 26.56 +68 10 36.9          14.1 G      B96

    CK19Y04a  C2020 04 04.86301 07 27 25.86 +68 10 36.0          14.1 G      B96

    CK19Y04a  C2020 04 04.86464 07 27 25.15 +68 10 35.1          14.1 G      B96

    CK19Y04a  C2020 04 04.86626 07 27 24.59 +68 10 34.5          14.1 G      B96

    CK19Y04a  C2020 04 04.86789 07 27 23.91 +68 10 33.4          14.1 G      B96

    CK19Y04a  C2020 04 04.86953 07 27 23.18 +68 10 32.7          14.1 G      B96

    CK19Y04a  C2020 04 04.87116 07 27 22.65 +68 10 31.7          14.1 G      B96

    CK19Y04a  C2020 04 04.87278 07 27 21.91 +68 10 31.1          14.1 G      B96

    CK19Y04a  C2020 04 04.87441 07 27 21.31 +68 10 30.6          14.1 G      B96

    CK19Y04a  C2020 04 04.87604 07 27 20.63 +68 10 29.5          14.1 G      B96

    CK19Y04a  C2020 04 04.87766 07 27 19.93 +68 10 28.9          14.1 G      B96

    CK19Y04a  C2020 04 04.87929 07 27 19.21 +68 10 27.8          14.1 G      B96

    CK19Y04a  C2020 04 04.88093 07 27 18.49 +68 10 27.2          14.1 G      B96

----- end -----

Comet C/2019 Y4 (ATLAS) -  4 april 2020

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

http://cara.uai.it

Photometric data obtained from FOCAS-II software

COD B96

OBS BRIXIIS Observatory

CATALOG: Gaia DR2 - BAND: G

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

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

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

C/2019 Y4a    04/04/2020 20:47:25  13.53  12.53  12.00  11.65  11.38  11.17  16.6  17.7  B96

C/2019 Y4a    04/04/2020 20:47:25*  0.03   0.03   0.02   0.02   0.02   0.02     6   3.4  Gai

                                                                     AFRHO         LOG

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

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

C/2019 Y4a    04/04/2020 20:47:25    1.03   1.40  26.71  12.19   17    268    16  2.428  B96

FoCAs 3.66

www.astrosurf.com/cometas-obs

es.groups.yahoo.com/group/Cometas_Obs

Afρ parameter according CARA-Approach

Afρ [cm] vs. core distance (in km) - image with Bessel R filter

Comet C/2019 Y4 (ATLAS) - Orbit - The Sky Live

Afρ [cm] vs. core distance (in km) - image with Bessel-I filter

Afρ [cm] vs. core distance (in km) - data form unfiltered image