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Comet C/2017 T1 (HEINZE)

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 T1     09/10/2017 12:10:16  17.78  17.49  17.59                        3.7  18.1  U69

C/2017 T1     09/10/2017 12:10:16*  0.14   0.23   0.23                          6   3.8  CMC

C/2017 T1     28/12/2017 23:51:16  13.81  13.02  12.66  12.41  12.23  12.08  17.6  18.1  B96

C/2017 T1     28/12/2017 23:51:16*  0.02   0.06   0.08   0.09   0.10   0.10    40   4.0  USN

C/2017 T1     19/01/2018 18:08:52  14.94  14.05  13.58  13.25  12.99  12.78  15.2  17.6  B96

C/2017 T1     19/01/2018 18:08:52*  0.13   0.19   0.20   0.22   0.23   0.25    12   4.5  CMC

                                                                     AFRHO         LOG

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

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

C/2017 T1     09/10/2017 12:10:16    2.63   2.45  10.48  17.73    4     32     9  1.508  U69

C/2017 T1     28/12/2017 23:51:16    0.29   1.26  94.72  11.60   18     29     2  1.469  B96

C/2017 T1     19/01/2018 18:08:52    0.49   0.92  56.44  12.84   15     14     1  1.149  B96

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

http://cara.uai.it

 This comet was discovered by Aren Heinze, University of Hawaii, on images taken on Oct. 2.6 UT with the ATLAS 0.5-m f/2.0 Schmidt telescope at Mauna Loa in the course of the "Asteroid Terrestrial-impact Last Alert System" (ATLAS) search program (discovery images tabulated below, together with observations subsequently identified several nights earlier taken with the same telescope); the object shows clear cometary features, with a tail about 10" long towards position angle about 240 degrees, with a measured coma diameter of 7".2

…..  as measured within a circular aperture of radius 6".5.  E. Bryssinck, Kruibeke, Belgium, obtained six 120-s exposures remotely on Oct. 9.50 with a 0.62-m f/6.5 telescope at the Sierra Remote Observatory near Auberry, CA, USA, which show a diffuse coma of size 10" with a hint of a tail about 15" long towards p.a. 239 deg; the R-band magnitude was 17.5 in an aperture of radius 5".0. ….

CBET 4444 : 20171016 : COMET C/2017 T1 (HEINZE)