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  • 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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