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20110104

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20110107

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20110108

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B96 (BRIXIIS)

20110109

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B96 (BRIXIIS)

20110127

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B96 (BRIXIIS)

20110302

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B96 (BRIXIIS)

20110303

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B96 (BRIXIIS)

20110306

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B96 (BRIXIIS)

20110307

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B96 (BRIXIIS)

20110308

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B96 (BRIXIIS)

20190203

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B96 (BRIXIIS)

20190211

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B96 (BRIXIIS)

20190214

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B96 (BRIXIIS)

20190215

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B96 (BRIXIIS)

20190329

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B96 (BRIXIIS)

20190420

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B96 (BRIXIIS)

20190429

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B96 (BRIXIIS)

20190505

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B96 (BRIXIIS)

20190525

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B96 (BRIXIIS)

20190608

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B96 (BRIXIIS)







Comet 123P/WEST-HARTLEY  -  (= 1989 E3 = 1995 S2)

Photometric data obtained by use of FOCAS-II software



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

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

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

123P          11/02/2019 21:29:17  14.45  13.75  13.46  13.26  13.11  13.00  22.8  17.0  B96

123P          11/02/2019 21:29:17*  0.00   0.00   0.00   0.00   0.00   0.00     1   4.0  CMC

123P          14/02/2019 23:02:59  14.38  13.66  13.36  13.18  13.03  12.93  25.8  17.7  B96

123P          14/02/2019 23:02:59*  0.02   0.01   0.02   0.03   0.03   0.03     3   3.8  CMC

123P          15/02/2019 23:14:34  14.37  13.66  13.35  13.16  13.02  12.91  23.1  17.6  B96

123P          15/02/2019 23:14:34*  0.02   0.02   0.02   0.01   0.01   0.01     3   3.9  CMC

123P          29/03/2019 22:51:38  14.77  14.02  13.67  13.44  13.26  13.13  28.7  18.0  B96

123P          29/03/2019 22:51:38*  0.02   0.02   0.03   0.03   0.03   0.03     6   3.7  CMC

123P          29/04/2019 20:29:22  15.57  14.86  14.47  14.21  14.03  13.91  22.1  17.6  B96

123P          29/04/2019 20:29:22*  0.02   0.05   0.04   0.05   0.07   0.07     7   3.3  CMC

123P          05/05/2019 20:41:02  15.70  14.94  14.54  14.25  14.04  13.90  18.2  17.7  B96

123P          05/05/2019 20:41:02*  0.03   0.04   0.03   0.03   0.03   0.03     8   3.4  CMC

123P          25/05/2019 21:15:47  16.22  15.43  14.98  14.67  14.44  14.29  15.5  17.2  B96

123P          25/05/2019 21:15:47*  0.02   0.04   0.02   0.03   0.04   0.04     5   3.2  CMC

123P          08/06/2019 22:08:19  16.47  15.69  15.24  14.99  14.83  14.73  10.6  17.4  B96

123P          08/06/2019 22:08:19*  0.06   0.06   0.04   0.03   0.03   0.01     3   3.9  CMC



                                                                     AFRHO         LOG

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

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

123P          11/02/2019 21:29:17    1.23   2.13  22.50  13.73   23    210     9  2.322  B96

123P          14/02/2019 23:02:59    1.22   2.13  22.67  13.65   26    224     9  2.351  B96

123P          15/02/2019 23:14:34    1.21   2.13  22.72  13.63   23    226    10  2.353  B96

123P          29/03/2019 22:51:38    1.30   2.17  21.23  14.03   29    186     6  2.270  B96

123P          29/04/2019 20:29:22    1.57   2.23  17.55  15.01   22    117     5  2.067  B96

123P          05/05/2019 20:41:02    1.64   2.24  16.82  15.14   18    113     6  2.055  B96

123P          25/05/2019 21:15:47    1.89   2.29  14.60  15.79   16     87     6  1.941  B96

123P          08/06/2019 22:08:19    2.08   2.33  13.26  16.13   11     80     8  1.903  B96


123P on Kronk’s cometography

Discovery:


was discovered by Richard West on an ESO survey plate taken on March 14 and independently by Malcolm Hartley on a UK Schmidt plate taken on May 28. The comet has made no recent close approaches to Jupiter. It reached between 13th and 14th magnitude at the last return in 1996. It should achieve a similar brightness this time round, but is at its brightest early in the New Year after its 2003 December perihelion.