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COMET C/2021 L3 (BORISOV)

Photometric data obtained from FOCAS-II software

COD X02

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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                                                                     AFRHO         LOG

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

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

http://cara.uai.it

Comet C/2021 E3 (ZTF) (astro.vanbuitenen.nl)

Discovery:

CBET 4985:  COMET C/2021 L3 (BORISOV)

Gennady Borisov reports his discovery of another comet on CCD images obtained on 2021 June 8 with a 0.65-m f/1.5 astrograph at the MARGO observatory near Nauchnij, Crimea (L51). He reports a very condensed 10" coma and a straight tail at position angle 175-185 deg. Additional reports of cometary features are as

Follows ( astrometry - see: MPEC M75: COMET C/2021 L3 (Borisov)):

OC   Date        Reporter           Coma    Tail    PA          Exposures

095  2021-06-11  V. Rumyantsev      5"      9"     180

H06  2021-06-12  H. Sato            8"                           12x60s

B96  2021-06-13  E. Bryssinck      11"                           30x120s

A71  2021-06-13  M. Jaeger         10"

B96  2021-06-14  E. Bryssinck       8"                           30x120s

A71  2021-06-16  M. Jaeger         10"

last updated: 2021-06-26