MPEC 2018-J35 : 2010 WC9
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M.P.E.C. 2018-J35 Issued 2018 May 10, 01:25 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
2010 WC9
Revision to MPEC 2010-X07
Additional Observations:
K10W09C C2018 05 08.38858 16 44 13.30 +22 18 26.4 18.5 GUEJ035G96
K10W09C C2018 05 08.39378 16 44 13.03 +22 18 23.6 18.7 GUEJ035G96
K10W09C C2018 05 08.39944 16 44 12.76 +22 18 20.6 19.4 GUEJ035G96
K10W09C C2018 05 08.40457 16 44 12.52 +22 18 17.7 18.6 GUEJ035G96
K10W09C C2018 05 08.40971 16 44 12.29 +22 18 14.8 18.7 GUEJ035G96
K10W09C C2018 05 08.41485 16 44 12.06 +22 18 11.9 19.4 GUEJ035G96
K10W09C C2018 05 08.45159 16 44 10.49 +22 17 49.1 18.5 GUEJ035I52
K10W09C C2018 05 08.45683 16 44 10.25 +22 17 45.6 19.1 GUEJ035I52
K10W09C C2018 05 08.46070 16 44 10.15 +22 17 43.1 18.4 GUEJ035I52
K10W09C C2018 05 08.46468 16 44 09.97 +22 17 40.1 18.8 GUEJ035I52
K10W09C C2018 05 08.87161 16 44 27.65 +22 13 00.3 18.4 RoEJ035K88
K10W09C C2018 05 08.87811 16 44 27.52 +22 12 57.6 18.2 RoEJ035K88
K10W09C C2018 05 08.88460 16 44 27.41 +22 12 55.0 18.5 RoEJ035K88
K10W09C C2018 05 08.88947 16 44 27.30 +22 12 53.0 18.0 RoEJ035K88
K10W09C KC2018 05 08.99188 16 44 25.10 +22 12 06.5 19.1 VSEJ035L01
K10W09C KC2018 05 08.99433 16 44 25.02 +22 12 05.2 18.6 VSEJ035L01
K10W09C KC2018 05 08.99679 16 44 24.93 +22 12 03.9 18.7 VSEJ035L01
K10W09C KC2018 05 08.99924 16 44 24.83 +22 12 02.3 19.0 VSEJ035L01
K10W09C KC2018 05 09.00500016 44 26.26 +22 11 39.6 18.3 GUEJ035Z80
K10W09C KC2018 05 09.00973616 44 26.15 +22 11 36.4 18.5 GUEJ035Z80
K10W09C KC2018 05 09.01447316 44 25.99 +22 11 33.3 18.8 GUEJ035Z80
K10W09C KC2018 05 09.01920916 44 25.81 +22 11 31.3 18.6 GUEJ035Z80
K10W09C KC2018 05 09.02540 16 44 24.30 +22 11 33.9 18.4 RUEJ035K87
K10W09C KC2018 05 09.02802 16 44 24.19 +22 11 32.0 18.8 GUEJ035K87
K10W09C KC2018 05 09.03141 16 44 24.07 +22 11 29.9 18.7 GUEJ035K87
K10W09C KC2018 05 09.03253 16 44 24.05 +22 11 29.3 18.5 RUEJ035K87
K10W09C KC2018 05 09.03554 16 44 23.92 +22 11 27.2 18.6 GUEJ035K87
K10W09C KC2018 05 09.03892 16 44 23.81 +22 11 25.1 18.3 RUEJ035K87
K10W09C KC2018 05 09.06457 16 44 24.53 +22 11 04.0 VEJ035J95
K10W09C KC2018 05 09.06607 16 44 24.49 +22 11 02.9 VEJ035J95
K10W09C KC2018 05 09.06781 16 44 24.39 +22 11 01.6 VEJ035J95
K10W09C KC2018 05 09.07352 16 44 24.20 +22 10 58.0 18.5 GVEJ035J95
K10W09C KC2018 05 09.28500 16 44 28.91 +22 09 18.6 18.7 RqEJ035850
K10W09C KC2018 05 09.29201 16 44 28.61 +22 09 13.5 18.5 RqEJ035850
K10W09C C2018 05 09.29573 16 44 32.98 +22 09 12.4 18.2 GUEJ035I52
K10W09C KC2018 05 09.29906 16 44 28.21 +22 09 08.8 18.9 RqEJ035850
K10W09C C2018 05 09.30120 16 44 32.73 +22 09 09.7 18.2 GUEJ035I52
K10W09C C2018 05 09.30457 16 44 32.57 +22 09 07.3 18.3 GUEJ035I52
K10W09C C2018 05 09.30839 16 44 32.38 +22 09 05.5 18.4 GUEJ035I52
K10W09C KC2018 05 09.30991 16 44 27.64 +22 09 00.8 18.7 RqEJ035850
K10W09C KC2018 05 09.31705 16 44 27.30 +22 08 55.6 18.6 RqEJ035850
K10W09C KC2018 05 09.32424 16 44 26.92 +22 08 50.3 18.7 RqEJ035850
K10W09C KC2018 05 09.38542 16 44 27.03 +22 08 18.8 oEJ035711
K10W09C KC2018 05 09.38788 16 44 26.89 +22 08 16.9 oEJ035711
K10W09C KC2018 05 09.39031 16 44 26.75 +22 08 14.7 oEJ035711
K10W09C C2018 05 09.54438 16 44 28.12 +22 06 47.7 18.3 oUEJ035T05
K10W09C C2018 05 09.56070 16 44 27.18 +22 06 33.0 19.1 oUEJ035T05
K10W09C C2018 05 09.56725 16 44 26.75 +22 06 26.7 18.2 oUEJ035T05
K10W09C C2018 05 09.58000 16 44 26.03 +22 06 14.1 17.9 oUEJ035T05
K10W09C KC2018 05 09.87226 16 44 45.02 +22 00 26.6 18.3 VqEJ035595
K10W09C KC2018 05 09.87605 16 44 44.94 +22 00 24.6 qEJ035595
K10W09C KC2018 05 09.87983 16 44 44.87 +22 00 22.0 18.5 VqEJ035595
K10W09C C2018 05 09.98233916 44 47.801+21 59 45.72 18.0 GVEJ035J04
K10W09C C2018 05 09.98344716 44 47.762+21 59 44.98 18.7 GVEJ035J04
K10W09C C2018 05 09.98454816 44 47.713+21 59 44.30 18.8 GVEJ035J04
Observer details:
595 Farra d'Isonzo. Observer E. Pettarin. 0.61-m f/4.0 reflector + CCD.
711 McDonald Observatory. Observer J. G. Ries. 2.1-m reflector + CCD + focal
reducer.
850 Cordell-Lorenz Observatory, Sewanee. Observer D. T. Durig. 0.3-m f/9.4
Schmidt-Cassegrain + CCD.
G96 Mt. Lemmon Survey. Observer R. A. Kowalski. Measurers B. M. Africano,
E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson,
R. A. Kowalski, S. M. Larson, G. J. Leonard, R. L. Seaman, F. C. Shelly.
1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers A. R. Gibbs,
G. J. Leonard. Measurers B. M. Africano, E. J. Christensen, D. C. Fuls,
A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski, S. M. Larson,
G. J. Leonard, R. L. Seaman, F. C. Shelly. 1.0-m reflector + CCD.
J04 ESA Optical Ground Station, Tenerife. Observer P. Ruiz. Measurers
M. Micheli, D. Koschny, A. Knoefel, M. Busch, E. Schwab. 1.0-m f/4.4
reflector + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
K87 Dettelbach Vineyard Observatory. Observer B. Haeusler. 0.30-m
Schmidt-Cassegrain + CCD.
K88 GINOP-KHK, Piszkesteto. Observer A. Ordasi. Measurer K. Sarneczky.
0.60-m Schmidt + CCD.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
T05 ATLAS-HKO, Haleakala. Observers L. Denneau, H. Flewelling, A. Heinze,
H. Weiland, J. Tonry. Measurers L. Denneau, H. Flewelling, A. Heinze,
J. Tonry. 0.5-m f/2.0 Schmidt + CCD.
Z80 Northolt Branch Observatory. Observer G. Wells. Measurer D. Bamberger.
0.25-m f/8 Ritchey-Chretien + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or integer in degrees), reference and Delta-T
180508 G96 41- 23+ 180509 J04 49- 27+ MPO190044 +3.1 day
Orbital elements:
2010 WC9 Earth MOID = 0.0014 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 251.05888 (2000.0) P Q
n 0.87928470 Peri. 273.52525 +0.80989459 +0.52969528
a 1.0790702 Node 54.65544 -0.33517716 +0.77044644
e 0.2786131 Incl. 17.99395 -0.48138034 +0.35473258
P 1.12 H 23.5 G 0.15 U 2
Residuals in seconds of arc
101130 G96 0.2- 0.1+ 101210 695 0.1+ 0.0 180509 K87 0.0 0.1-
101130 G96 0.4+ 0.1+ 101210 695 0.2+ 0.1- 180509 J95 0.1+ 0.2+
101130 G96 0.1+ 0.1- 101210 695 0.1+ 0.1- 180509 J95 0.3+ 0.1+
101130 G96 0.4- 0.2- 180508 G96 0.5+ 0.0 180509 J95 0.3- 0.1-
101130 G96 0.5- 0.5- 180508 G96 0.1+ 0.0 180509 J95 0.2- 0.1+
101130 G96 0.1+ 0.4+ 180508 G96 0.1- 0.0 180509 850 0.5- 0.3+
101130 G96 0.1+ 0.1+ 180508 G96 0.1- 0.0 180509 850 0.3+ 0.1-
101130 G96 0.8- 0.5- 180508 G96 0.1- 0.0 180509 I52 0.1+ 0.1-
101130 G96 0.1- 0.8- 180508 G96 0.1- 0.0 180509 850 0.2- 0.1+
101130 G96 0.6+ 0.6+ 180508 I52 0.1+ 0.0 180509 I52 0.0 0.2+
101201 G96 0.1- 0.1+ 180508 I52 0.3- 0.0 180509 I52 0.0 0.3-
101201 G96 0.5- 0.4+ 180508 I52 0.4+ 0.1+ 180509 I52 0.2- 0.0
101201 G96 0.0 0.2- 180508 I52 0.0 0.2- 180509 850 0.3- 0.1-
101201 G96 0.4+ 0.4+ 180508 K88 0.5+ 0.1+ 180509 850 0.2+ 0.1-
101201 H36 0.2- 0.1- 180508 K88 0.2+ 0.1+ 180509 850 0.1+ 0.1+
101201 H36 0.5+ 0.4- 180508 K88 0.4+ 0.2+ 180509 711 0.4+ 0.0
101201 H01 0.0 0.2+ 180508 K88 0.3+ 0.2+ 180509 711 0.3+ 0.1+
101201 H01 0.0 0.1+ 180508 L01 0.5- 0.2- 180509 711 0.3+ 0.1-
101201 H01 0.1- 0.2+ 180508 L01 0.3- 0.1- 180509 T05 0.1- 0.2-
101201 H01 0.0 0.1+ 180508 L01 0.2- 0.0 180509 T05 0.6+ 0.1+
101206 H21 0.3+ 0.1+ 180508 L01 0.3- 0.2- 180509 T05 0.0 0.1+
101206 H21 0.6+ 0.1- 180509 Z80 0.6- 0.3+ 180509 T05 0.1+ 0.0
101206 H21 0.6+ 0.0 180509 Z80 0.1- 0.3- 180509 595 0.4+ 0.1-
101207 568 0.0 0.0 180509 Z80 0.4- 0.8- 180509 595 0.3+ 0.4+
101207 568 0.0 0.0 180509 Z80 0.8- 0.1- 180509 595 0.3+ 0.3+
101207 568 0.0 0.0 180509 K87 0.1+ 0.0 180509 J04 0.1+ 0.1+
101208 H21 0.0 0.2+ 180509 K87 0.1- 0.2- 180509 J04 0.1+ 0.0
101208 H21 0.1- 0.3+ 180509 K87 0.1- 0.2- 180509 J04 0.0 0.1+
101208 H21 0.0 0.3- 180509 K87 0.2+ 0.1-
101210 695 0.2+ 0.1- 180509 K87 0.1- 0.2-
Ephemeris:
2010 WC9 a,e,i = 1.08, 0.28, 18 q = 0.7784
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 04 10 16 29 49.3 +20 25 21 0.2684 1.1733 124.1 45.0 22.7
...
2018 04 25 16 39 41.9 +22 07 49 0.1543 1.1095 129.0 44.8 21.4
...
2018 05 03 16 42 46.2 +22 33 44 0.09490 1.0730 131.4 44.8 20.3
...
2018 05 09 16 44 23.2 +22 13 11 0.05074 1.0449 133.3 44.6 18.8
2018 05 10 16 44 38.8 +22 00 13 0.04341 1.0402 133.8 44.5 18.5
2018 05 11 16 44 56.0 +21 40 34 0.03608 1.0354 134.3 44.3 18.1
...
2018 05 17 04 40 03.7 -32 20 08 0.0080321.0065 53.9 125.7 18.3
...
2018 05 25 04 43 47.3 -23 26 37 0.06650 0.9671 45.2 132.0 23.4
...
2018 06 09 04 42 54.2 -20 29 48 0.1783 0.8949 43.8 128.3 25.1
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-J35
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