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Comet C/2018 KJ 3 (LEMMON)

Photometric data obtained from FOCAS-II software

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

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

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C/2018 KJ3    17/08/2018 21:21:38  18.63  18.63  18.24  17.78                 2.6  17.2  B96

C/2018 KJ3    17/08/2018 21:21:38*  0.81   0.88   0.75   0.84                   3   3.8  CMC

                                                                     AFRHO         LOG

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

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

C/2018 KJ3    17/08/2018 21:21:38    4.21   4.96   6.55  19.02    3    104    40  2.016  B96

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

http://cara.uai.it

An asteroidal object of 20th magnitude was found in Mt Lemmon Survey images taken with the 1.5m reflector on May 17.41. It was placed on the PCCP as ZKA8FB3, but no cometary activity was detected at the time. [MPEC 2018-K116, 2018 May 31]  When observed in August with the 3.6-m Canada-France-Hawaii Telescope it showed a clear tail and coma. [MPEC 2018-P84, 2018 August 13] The comet is at perihelion at 3.6 au in 2019 September and has a retrograde orbit with a period of around 2000 years.   See CBET 4541 : 20180814 : COMET C/2018 KJ_3 (LEMMON)