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Observation date

image

Photometry

(FOCAS)

Afρ

astrometry

Observatory

20171023

X

X


X

H06 - New Mexico

20171113

X

X


X

B96 - BRIXIIS

20171122

X

X


X

B96 - BRIXIIS

20180119

X

X


X

B96 - BRIXIIS

20201104

X

X


X

B96 - BRIXIIS



































































Comet C/2017 T3 (ATLAS)

Photometric data obtained from FOCAS-II software





COD U69

CON iTelescope.net SRO Observatory Auberry California USA   

CATALOG: USNO A2.0 / CMC 14-15 - BAND: R


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

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

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

C/2017 T3     13/11/2017 20:43:07  17.62  17.38  17.47                       10.5  18.2  B96

C/2017 T3     13/11/2017 20:43:07*  0.05   0.18   0.18                          4   3.7  USN

C/2017 T3     22/11/2017 21:03:41  17.67  17.13  17.21                        3.7  18.0  B96

C/2017 T3     22/11/2017 21:03:41*  0.24   0.38   0.41                          6   3.6  USN

C/2017 T3     19/01/2018 18:36:14  17.25  16.94  17.04                       10.8  18.0  B96

C/2017 T3     19/01/2018 18:36:14*  0.05   0.12   0.12                          4   3.6  USN



                                                                     AFRHO         LOG

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

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

C/2017 T3     13/11/2017 20:43:07    3.25   3.68   8.49  17.61   11    124    12  2.094  B96

C/2017 T3     22/11/2017 21:03:41    3.15   3.58   8.75  17.67    4    105    28  2.020  B96

C/2017 T3     19/01/2018 18:36:14    2.87   2.91   9.62  17.22   11     87     8  1.939  B96

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


http://cara.uai.it

A moving object presumed to be asteroidal in appearance that was found on CCD exposures taken on Oct. 14.4 UT with the ATLAS 0.5-m f/2.0 Schmidt telescope at Haleakala in the course of the "Asteroid Terrestrial-impact Last Alert System" (ATLAS) search program has been found to show cometary apperance after it was posted on the Minor Planet Center's PCCP webpage.

H. Weiland, University of Hawaii, reported on Oct. 19 that six o-band ATLAS images taken on Oct. 14.4 show a size of 3".3 vs. stellar point-spread- function sizes of 2".3, with a possible elongation toward p.a. 310 deg…….  p.a. 131 deg; the red magnitude was measured to be 18.0-18.1.   E. Bryssinck, Kruibeke, Belgium, reports that four 180-s exposures taken on Oct. 23.09 with an iTelescope 0.51-m f/4.5 reflector (+ luminance filter) near Mayhill, NM, USA, show a starlike object with a hint of a coma 12" in diameter with magnitude R = 17.9 in an aperture of radius 5".  F. Kugel writes .......  Info: CBET 4449: 20171028 : COMET C/2017 T3 (ATLAS)