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Photometry

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astrometry

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20171013

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B96 (BRIXIIS)

20171014

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B96 (BRIXIIS)

20171015

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B96 (BRIXIIS)

















































 comet 361P/SPACEWATCH - (P/2006 UR_111 = P/2017 S4 )

Photometric data obtained by use of FOCAS-II software



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

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

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

361P          13/10/2017 20:21:49  18.17  17.77  17.84                        4.1  17.8  B96

361P          13/10/2017 20:21:49*  0.02   0.22   0.19                          3   3.7  USN

361P          14/10/2017 20:33:00  18.16  17.91  17.93                        5.4  17.7  B96

361P          14/10/2017 20:33:00*  0.13   0.19   0.15                          5   3.5  USN

361P          15/10/2017 20:55:11  18.32  18.15  18.05                        4.8  17.2  B96

361P          15/10/2017 20:55:11*  0.16   0.52   0.47                          4   4.0  USN


                                                                     AFRHO         LOG

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

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

361P          13/10/2017 20:21:49    2.34   3.27  11.78  18.07    4     33     8  1.523  B96

361P          14/10/2017 20:33:00    2.34   3.27  11.77  18.10    5     32     6  1.512  B96

361P          15/10/2017 20:55:11    2.35   3.27  11.75  18.28    5     27     6  1.439  B96

Discovery:


Comet P/2006 UR111 was discovered on 2006 Oct. 19 on Spacewatch images taken by J. V. Scotti with the Steward Observatory 0.9-m telescope at Kitt Peak , and which was then given the minor-planet designation 2006 UR_111 (cf. MPS 184334).


Recovery:


Comet P/2017 S4 discovered E. Lilly, R. J. Wainscoat, and R. Weryk, Institute for Astronomy, University of Hawaii, report the discovery of another apparent comet on four w-band CCD exposures taken with the 1.8-m Pan-STARRS1 telescope at Haleakala on Sept. 24.4 UT 2017. This comet linked with eralier comet P/2006 UR111.  Later with CBET 4442 was this comet assigned as comet 361P/SPACEWATCH