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175P/Hergenrother

175P on Kronck’s cometography

Photometric data obtained from FOCAS-II software

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

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

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

175P          17/02/2013 21:25:20  16.82  16.31  16.00  15.75  15.60  15.42   4.3  16.6  B96

175P          17/02/2013 21:25:20*  0.08   0.12   0.11   0.10   0.17   0.22     3   3.9  CMC

175P          04/03/2013 23:02:03  16.87  16.41  16.28                        5.4  17.7  B96

175P          04/03/2013 23:02:03*  0.06   0.09   0.16                          3   3.7  CMC

175P          21/04/2013 21:56:38  16.70  16.20  16.15                        4.5  16.2  B96

175P          21/04/2013 21:56:38*  0.07   0.18   0.27                          5   3.9  USN

175P          03/05/2013 22:02:33  16.74  16.13  15.86  15.67  15.60  15.57   6.2  17.4  B96

175P          03/05/2013 22:02:33*  0.02   0.08   0.11   0.14   0.18   0.22     4   3.9  CMC

175P          04/05/2013 22:03:14  16.69  16.00  15.70  15.55  15.44  15.42   7.8  18.0  B96

175P          04/05/2013 22:03:14*  0.03   0.16   0.19   0.18   0.17   0.18     3   3.6  CMC

                                                                     AFRHO         LOG

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

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

175P          21/04/2013 21:56:38    1.46   1.96  18.89  16.21          26     6  1.412  B96

175P          03/05/2013 22:02:33    1.56   1.95  17.64  16.28    6     28     4  1.440  B96

175P          04/05/2013 22:03:14    1.57   1.95  17.55  16.18    8     30     4  1.483  B96

C. W. Hergenrother (Lunar and Planetary Laboratory, Arizona, USA) discovered this comet with the 0.41-m f/3 Schmidt telescope in the course of the Catalina Sky Survey on 2000 February 4.46. He determined the magnitude as 17.1. One of the four CCD images revealed a tail extending 11 arc seconds toward PA 300°. Prediscovery observations were found on Lincoln Laboratory Near-Earth Asteroid Research (LINEAR) project images made on January 4.45, January 4.46, January 8.45, January 8.47, January 8.50, and January 8.52. The LINEAR images indicated nuclear magnitudes ranging from 18.7 to 19.4.