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Comet C/2021 T4 (LEMMON) - 25 nov. 2021

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


http://cara.uai.it

Astrometric data for minor planet center


COD X02

CON E. Bryssinck, Kruibeke, Belgium  

OBS E. Bryssinck, M. Rocchetto, E. Guido, M. Fulle

OBS G. Milani, C. Nassef, G. Savini, A. Valvasori

MEA E. Bryssinck  

TEL 0.61-m f/6.5 reflector + CCD

ACK NEOCP X02 file updated 2021.10.11 15:51:32

NET Gaia DR2

     C6131F2 KC2021 10 11.35147 04 00 36.34 +11 48 19.0          19.5 G      X02

     C6131F2 KC2021 10 11.36226 04 00 35.96 +11 48 16.9          19.9 G      X02

----- end -----


COD Z08

OBS BRIXIIS Observatory

CATALOG: Gaia DR2 - BAND: G


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

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

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

C/2021 T4     25/11/2022 21:14:49  16.20  15.64  15.41  15.22  15.14  15.05  13.0  17.4  B96

C/2021 T4     25/11/2022 21:14:49*  0.08   0.12   0.14   0.15   0.13   0.10     2   3.7  Gai


                                                                     AFRHO         LOG

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

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

C/2021 T4     25/11/2022 21:14:49    2.75   3.46  10.02  16.14   13    304    23  2.483  B96




Photometry obtained with FOCAS-II software:

comet C/2021 T4 (LEMMON)

Af(rho) parameter according CARA-approach

Af(rho) parameter vs. core distance - data obtained from unfiltered CCD-image