MPEC 2017-U237: COMET P/2017 S9 (PANSTARRS)
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M.P.E.C. 2017-U237 Issued 2017 Oct. 28, 03:04 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Division F of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
COMET P/2017 S9 (PANSTARRS)
Observations:
PK17S090 C2017 09 19.60005 04 44 09.256+04 17 09.46 21.6 TLEU237F51
PK17S090 C2017 09 19.60855 04 44 09.668+04 17 06.37 21.9 TLEU237F51
PK17S090 C2017 09 19.61707 04 44 10.112+04 17 03.13 21.7 TLEU237F51
PK17S090 C2017 09 19.62559 04 44 10.556+04 17 00.53 21.6 TLEU237F51
PK17S090 C2017 09 30.59048 04 52 14.819+03 07 06.61 22.0 TLEU237F51
PK17S090 C2017 09 30.59126 04 52 14.847+03 07 06.43 21.7 TLEU237F51
PK17S090 C2017 09 30.60198 04 52 15.195+03 07 02.20 21.6 TLEU237F51
PK17S090 C2017 09 30.60277 04 52 15.239+03 07 01.72 21.5 TLEU237F51
PK17S090 C2017 09 30.61351 04 52 15.593+03 06 57.33 21.8 TLEU237F51
PK17S090 C2017 09 30.61431 04 52 15.622+03 06 57.07 21.7 TLEU237F51
PK17S090 C2017 09 30.62499 04 52 15.977+03 06 52.93 21.7 TLEU237F51
PK17S090 C2017 09 30.62579 04 52 15.984+03 06 52.50 21.6 TLEU237F51
PK17S090 5C2017 10 01.51938 04 52 46.65 +03 00 49.2 vEU237U69
PK17S090 5C2017 10 01.52499 04 52 46.82 +03 00 46.7 20.5 TvEU237U69
PK17S090 KC2017 10 13.44475 04 57 19.65 +01 37 47.5 oEU237291
PK17S090 KC2017 10 13.45646 04 57 19.75 +01 37 42.3 oEU237291
PK17S090 KC2017 10 13.46816 04 57 19.86 +01 37 37.3 oEU237291
PK17S090 HC2017 10 14.46420 04 57 30.73 +01 30 37.4 oEU237691
PK17S090 HC2017 10 14.48990 04 57 30.94 +01 30 27.4 21.6 ToEU237691
PK17S090 KC2017 10 15.05241 04 57 36.36 +01 26 28.7 20.8 ToEU237K88
PK17S090 KC2017 10 15.06530 04 57 36.45 +01 26 23.3 21.0 ToEU237K88
PK17S090 HC2017 10 15.45372 04 57 39.65 +01 23 41.9 21.2 ToEU237691
PK17S090 HC2017 10 15.46384 04 57 39.69 +01 23 36.5 21.0 ToEU237691
PK17S090 HC2017 10 15.47378 04 57 39.73 +01 23 33.2 21.1 ToEU237691
PK17S090 KC2017 10 16.05210 04 57 44.26 +01 19 28.6 20.7 ToEU237K88
PK17S090 KC2017 10 16.06494 04 57 44.30 +01 19 23.2 20.5 ToEU237K88
PK17S090 KC2017 10 17.05499 04 57 50.23 +01 12 28.3 20.9 ToEU237K88
PK17S090 KC2017 10 17.07629 04 57 50.32 +01 12 19.1 20.8 ToEU237K88
PK17S090 HC2017 10 17.42607 04 57 51.88 +01 09 54.4 20.9 ToEU237691
PK17S090 HC2017 10 17.44355 04 57 51.98 +01 09 46.8 21.0 ToEU237691
PK17S090 HC2017 10 17.46121 04 57 52.04 +01 09 40.0 21.3 ToEU237691
PK17S090 KC2017 10 18.08487 04 57 54.35 +01 05 18.8 20.7 ToEU237K88
PK17S090 KC2017 10 18.09765 04 57 54.38 +01 05 13.5 21.0 ToEU237K88
PK17S090 KC2017 10 21.37675 04 57 54.20 +00 42 45.5 21.4 ToEU237291
PK17S090 KC2017 10 21.39679 04 57 53.99 +00 42 36.9 21.3 ToEU237291
PK17S090 KC2017 10 21.41725 04 57 54.03 +00 42 29.1 21.4 ToEU237291
PK17S090 _C2017 10 22.53853704 57 49.183+00 34 56.22 21.6 TUEU237568
PK17S090 _C2017 10 22.53971104 57 49.172+00 34 55.75 21.6 TUEU237568
PK17S090 _C2017 10 22.54088504 57 49.165+00 34 55.26 21.5 TUEU237568
Observer details:
291 LPL/Spacewatch II. Observers A. F. Tubbiolo, R. A. Mastaler. 1.8-m f/2.7
reflector + CCD.
568 Mauna Kea. Observers R. J. Wainscoat, C. Wipper. Measurers M. Micheli,
R. J. Wainscoat, R. Weryk. 3.6-m Canada-France-Hawaii Telescope + CCD.
691 Steward Observatory, Kitt Peak. Observers T. H. Bressi, R. A. Mastaler.
0.9-m f/3 reflector + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz,
M. Willman. Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling,
M. Huber, E. Lilly, E. Magnier, R. Wainscoat, C. Waters, R. Weryk. 1.8-m
Ritchey-Chretien + CCD.
K88 GINOP-KHK, Piszkesteto. Observer K. Sarneczky. 1.02-m Ritchey-Chretien
+ CCD.
U69 iTelescope SRO Observatory, Auberry. Observer H. Sato. 0.61-m f/6.5
astrograph + CCD.
Orbital elements:
P/2017 S9 (PANSTARRS)
Epoch 2017 July 26.0 TT = JDT 2457960.5
T 2017 July 23.55681 TT MPCW
q 2.1950597 (2000.0) P Q
n 0.17577822 Peri. 237.89636 +0.89849554 -0.41744020
a 3.1561624 Node 146.21357 +0.43751837 +0.87680456
e 0.3045162 Incl. 14.13769 -0.03582513 +0.23865759
P 5.61
From 39 observations 2017 Sept. 19-Oct. 22, mean residual 0".4.
P/2017 S9 (PANSTARRS)
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5
T 2023 Feb. 26.32560 TT MPCW
q 2.1915208 (2000.0) P Q
n 0.17577352 Peri. 237.53232 +0.90116006 -0.41165040
a 3.1562186 Node 146.20894 +0.43187244 +0.87959769
e 0.3056499 Incl. 14.13792 -0.03737310 +0.23843624
P 5.61
From 39 observations 2017 Sept. 19-Oct. 22, mean residual 0".4.
P/2017 S9 (PANSTARRS)
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5
T 2017 July 23.55154 TT MPCW
q 2.1950575 (2000.0) P Q
n 0.17577730 Peri. 237.89517 +0.89850883 -0.41741107
a 3.1561734 Node 146.21292 +0.43749042 +0.87681794
e 0.3045194 Incl. 14.13761 -0.03583315 +0.23865939
P 5.61
From 39 observations 2017 Sept. 19-Oct. 22, mean residual 0".4.
Ephemeris:
P/2017 S9 (PANSTARRS)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2017 09 28 04 50 38.1 +03 24 24 1.6601 2.2355 111.8 24.6 21.6
...
2017 10 13 04 57 14.1 +01 40 59 1.5434 2.2553 123.7 21.6 21.5
...
2017 10 21 04 57 55.2 +00 45 22 1.4914 2.2673 130.4 19.5 21.4
...
2017 10 27 04 57 06.5 +00 05 52 1.4584 2.2770 135.6 17.8 21.4
2017 10 28 04 56 52.0 -00 00 25 1.4534 2.2786 136.4 17.5 21.4
2017 10 29 04 56 35.7 -00 06 35 1.4487 2.2803 137.3 17.2 21.4
...
2017 11 04 04 54 21.7 -00 40 59 1.4239 2.2906 142.3 15.3 21.4
...
2017 11 12 04 49 55.9 -01 17 57 1.4016 2.3052 148.6 12.9 21.4
...
2017 11 27 04 38 32.0 -01 49 12 1.3980 2.3348 156.1 9.8 21.4
Gareth V. Williams (C) Copyright 2017 MPC M.P.E.C. 2017-U237
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