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 comet 352P/SKIFF - (P/2000 S1 = P/2017 L1 )

Photometric data obtained by use of FOCAS-II software

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

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

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

352P          13/10/2017 20:40:02  17.03  16.41  16.21                        5.7  17.2  B96

352P          13/10/2017 20:40:02*  0.09   0.09   0.10                          4   3.8  USN

352P          14/10/2017 20:51:25  17.02  16.30  15.94  15.88  15.92  16.02   7.9  17.0  B96

352P          14/10/2017 20:51:25*  0.07   0.12   0.12   0.12   0.17   0.35     6   3.4  USN

352P          15/10/2017 21:13:46  16.91  16.40  16.10                        4.7  16.3  B96

352P          15/10/2017 21:13:46*  0.14   0.28   0.31                          4   3.7  USN

                                                                     AFRHO         LOG

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

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

352P          13/10/2017 20:40:02    1.74   2.71  15.86  16.65    6     47     8  1.668  B96

352P          14/10/2017 20:51:25    1.75   2.71  15.80  16.56    8     51     6  1.710  B96

352P          15/10/2017 21:13:46    1.75   2.72  15.75  16.58    5     51    11  1.708  B96

Discovery:

COMET P/2000 S1 (SKIFF) was discovered as a 14-the magnitude comet by Brian A. Skiff  on images taken with the 0.59-m  LONEOS Schmidt telescope in the course of the LONEOS program on 24 sept. 2000,  Measurer B. W. Koehn. And discribed the comet with fan-shaped tail 2' long in p.a. about 250 deg.    [ IAUC 7496 + IAUC 7497.] Confirming byM. Tichy, M. Kocer, and P. Jelinek (Klet).  0.57-m f/5.2 reflector.  And discribed the object as apparently diffuse with coma diameter about 14".

Recovery:

COMET 2017 L1 = P/2000 S1 (SKIFF)  -  H. Sato, Tokyo, Japan, reports his recovery of comet P/2000 S1 (cf. IAUCs 7496, 7497) on CCD images taken with an iTelescope 0.51-m f/6.8 astrograph at Siding Spring, NSW, Australia, noting the comet to be strongly condensed with a coma 15" in diameter and a tail 30" long toward p.a. 240 degrees in sets of eight stacked 60-s exposures on each night; date: 5 june 2017 .   CBET 4442 issued on 20171009 assigned comet COMET 2017 L1 = P/2000 S1 (SKIFF)  as periodic comet 352P/SKIFF