BRIXIIS Astronomical Observatory

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Observation date

image

Photometry

(FOCAS)

Afρ

astrometry

Observatory

20201215

X



X

B96 - BRIXIIS

















































COMET C/2020 X4 (Leonard)

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

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



                                                                     AFRHO         LOG

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

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


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


http://cara.uai.it

COMET C/2020 X4 (Leonard) (astro.vanbuitenen.nl)


Discovery:







MPEC A101: COMET C/2020 X4 (Leonard)


    G. J. Leonard reports the discovery of a comet in survey images from Mt. Lemmon Survey (G96) in 4 co-added 30s exposures taken 2020 Dec. 14 UT. He reports a moderately condensed 10" coma.  Additional reports of cometary features are as follows:


OC   Date        Reporter           Coma    Tail    PA          Exposures

I52  2020-12-14  C. Fuls            6".8

B96  2020-12-15  E. Bryssinck       8"                           35x120s

H06  2020-12-17  H. Sato            8"                           16x60s

F51  2020-12-17  R. Weryk           1".3     4"     120           3x45s

H06  2021 01 05  H. Sato            6"                           14x60s