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Observation date

image

Photometry

(FOCAS)

Afρ

astrometry

Observatory

20200807

X



X

G39 - ROAD, Chile

















































Comet C/2020 P1  (NEOWISE)

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

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



                                                                     AFRHO         LOG

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

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




FoCAs 3.66

www.astrosurf.com/cometas-obs

es.groups.yahoo.com/group/Cometas_Obs

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


http://cara.uai.it


CBET 4825:  COMET C/2020 P1

     J. P. Chesley, Jet Propulsion Laboratory, saw on the infrared images taken on aug. 2-3 by the Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) that an object has an apparant coma, that the object's point-spread function appears fuzzier and twice larger than a typical stellar PSF in both NEOWISE W1 and W2 (3.4- and 4.6-micron) channels, likely indicating a cometary coma; there is no evidence of a tail.  After the object was posted on the Minor Planet Center's PCCP webpage, cometary appearance has been confirmed by CCD astrometrists elsewhere.... (Snip)

... E. Bryssinck writes that fifteen stacked unfiltered 60-s exposures taken remotely on Aug. 8.0 by F.-J. Hambsch and himself with a 0.4-m f/6.8 telescope of a private observatory in San Pedro de Atacama, Chile, shows a 10" coma and a tail about 14" long in p.a. 116 degrees.

     The available astrometry appear on MPEC 2020-P29.