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236P/LINEAR

Photometric data obtained by use of FOCAS-II software

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

OBJECT        DATE       TIME        +/-    +/-    +/-    +/-    +/-    +/-     N  FWHM  CAT

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

236P          05/08/2017 22:32:19  18.38  17.72  17.41  17.31                 2.5  17.3  B96

236P          05/08/2017 22:32:19*  0.41   0.16   0.26   0.56                   4   4.2  CMC

236P          22/09/2017 21:19:14  18.20  17.74  17.84                        5.1  18.0  B96

236P          22/09/2017 21:19:14*  0.06   0.12   0.11                          4   3.6  CMC

236P          23/09/2017 21:18:20  19.01  18.53  18.51                        3.6  17.9  B96

236P          23/09/2017 21:18:20*  0.70   0.50   0.44                          6   4.0  CMC

236P          24/09/2017 21:17:22  18.77  18.28  18.07                        5.4  17.5  B96

236P          24/09/2017 21:17:22*  0.34   0.12   0.25                          4   3.9  CMC

236P          13/10/2017 20:02:39  18.09  17.98  17.88                        6.3  17.8  B96

236P          13/10/2017 20:02:39*  0.04   0.40   0.30                          4   3.7  USN

236P          14/10/2017 20:14:54  18.23  18.20  17.82  17.39  17.11  17.06   6.1  17.6  B96

236P          14/10/2017 20:14:54*  0.07   0.17   0.31   0.38   0.30   0.39     5   3.6  USN

                                                                     AFRHO         LOG

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

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

236P          05/08/2017 22:32:19    1.12   2.06  24.56  17.62    3      5     2  0.664  B96

236P          22/09/2017 21:19:14    1.12   1.91  24.62  17.82    5      3     1  0.517  B96

236P          23/09/2017 21:18:20    1.12   1.91  24.54  18.54    4      2     0  0.230  B96

236P          24/09/2017 21:17:22    1.13   1.91  24.46  18.18    5      2     0  0.374  B96

236P          13/10/2017 20:02:39    1.22   1.87  22.68  17.94    6      3     1  0.519  B96

236P          14/10/2017 20:14:54    1.22   1.87  22.57  17.84    6      4     1  0.561  B96

2003 UY275 (P/LINEAR) LINEAR discovered an 18th mag asteroid on October 29.32. Subsequent images taken by Carl Hergenrother with the Mt Hopkins 1.2 m reflector on November 30.25 showed cometary features and these were confirmed by other observers. Prediscovery images back to October 5 were also found. It was at perihelion in early July at 1.8 AU and has a period around 7.2 years. It will fade from 18th magnitude.

An apparently asteroidal object discovered by the LINEAR project on 2003 October 29.32 has been found to show cometary appearance on CCD images taken with the Mt. Hopkins 1.2-m reflector on Nov. 30.25 UT by C. W. Hergenrother; his co-added 1200-s R-band exposures show a highly condensed 16" coma and a narrow tail 100" long in p.a. 280 deg (mag 18.5 determined by T. B. Spahr). Also, R. S. McMillan noted the object as diffuse in Spacewatch incidental observations made on Nov. 30.4. [IAUC 8247, 2003 December 2]

Jim Scotti recovered comet 2003 UY275 on 2010 May 20.44 with the Spacewatch 1.8-m f/2.7 reflector at Kitt Peak. The indicated correction to the orbit on MPC 59600 is Delta(T) = -0.70 day. There are suggestions that images taken in late October and early November show that the comet has split into two components.  

Rediscovery on 20 may 2010 of this comet has assigned as  P/2010 K1 and later assigned as 236P