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208P/MCMILLAN

Photometric data obtained by use of FOCAS-II software

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

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

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

208P          03/10/2016 21:07:03  19.18  18.95  18.89                        3.5  17.9  B96

208P          03/10/2016 21:07:03*  0.31   0.48   0.54                          4   3.7  USN

208P          04/10/2016 21:52:46  19.34  18.84  18.74                        1.8  17.9  B96

208P          04/10/2016 21:52:46*  0.28   0.27   0.52                          3   3.7  USN

208P          05/10/2016 21:02:58  18.84  18.19  18.00                        2.5  17.4  B96

208P          05/10/2016 21:02:58*  0.44   0.29   0.53                          4   3.8  CMC

                                                                     AFRHO         LOG

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

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

208P          03/10/2016 21:07:03    1.62   2.62  17.03  19.02    4      4     1  0.628  B96

208P          04/10/2016 21:52:46    1.62   2.62  17.01  19.01    2      4     2  0.634  B96

208P          05/10/2016 21:02:58    1.62   2.62  17.00  18.40    3      8     3  0.882  B96

Robert McMillan discovered a 19th magnitude comet with the Spacewatch 1.8-m reflector on 2008 October 19.20. Further prediscovery images back to September 20 were found in Spacewatch imagery. The comet has a period of 8.1 years and was at perihelion at 2.5 AU in mid May.

In December, S Nakano linked the comet with previously unreported observations of an 18th magnitude object obtained by LONEOS in September and October 2000. This return is now designated 2000 S7. The new orbit shows that the comet passed 0.18 AU from Jupiter on 2004 July 8.208P/2000 S7  was first discovered in december 2000 and  is a periodic comet with orbital period of about 8.1 years.