• MPC Preparation (Info)

  • MPEC 2012-H56 : 2003 WH166

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    M.P.E.C. 2012-H56                                Issued 2012 Apr. 23, 16:35 UT
    
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets and routine data on comets.  They are published
       on behalf of Commission 20 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
    
                                      2003 WH166
    
                               Revision to MPEC 2003-X27
    
    Additional Observations:
         K03WG6H  C2012 04 22.18531 08 49 42.52 +23 31 47.2          19.7  cEH056704
         K03WG6H  C2012 04 22.19614 08 50 06.39 +23 30 28.0          18.8  cEH056704
         K03WG6H  C2012 04 22.20693 08 50 30.27 +23 29 09.6          19.2  cEH056704
         K03WG6H  C2012 04 22.21788 08 50 54.46 +23 27 48.3          18.9  cEH056704
         K03WG6H  C2012 04 23.15924 09 26 32.74 +21 19 27.9          17.8 VrEH056G96
         K03WG6H  C2012 04 23.16045 09 26 35.41 +21 19 16.5          18.1 VrEH056G96
         K03WG6H  C2012 04 23.16168 09 26 38.11 +21 19 04.9          17.6 VrEH056G96
         K03WG6H  C2012 04 23.16292 09 26 40.81 +21 18 53.6          17.4 VrEH056G96
         K03WG6H KC2012 04 23.22982709 29 05.98 +21 07 46.8          18.1 VrEH056H21
         K03WG6H KC2012 04 23.23353309 29 14.17 +21 07 10.8          18.2 VrEH056H21
         K03WG6H KC2012 04 23.23670009 29 21.20 +21 06 39.6          18.4 VrEH056H21
    
    Observer details:
    704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, G. Spitz,
        R. Brungard, J. Paige, P. Festler, T. McVey, A. Valdivia, C. Gall.  1.0-m
        f/2.15 reflector + CCD.
    G96 Mt. Lemmon Survey.  Observer R. A. Kowalski.  Measurers E. C. Beshore,
        A. Boattini, A. R. Gibbs, A. D. Grauer, R. E. Hill, R. A. Kowalski,
        S. M. Larson, R. H. McNaught.  1.5-m reflector + CCD.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers L. Buzzi, H. Devore, S. Foglia, T. Vorobjov.  0.61-m f/4.0
        astrograph + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    120422 704 2.97+ 0.17-    120423 H21 3.78+ 0.58-    MPO 66319   -0.28 day
    
    Orbital elements:
    2003 WH166                                          PHA, Earth MOID = 0.0046 AU
    Epoch 2012 Mar. 14.0 TT = JDT 2456000.5                 MPC
    M   0.18022              (2000.0)            P               Q
    n   0.36627342     Peri.  328.59067     -0.90522054     -0.42494004
    a   1.9346353      Node   186.26290     +0.39234056     -0.83457563
    e   0.5557836      Incl.    0.69284     +0.16323192     -0.35058448
    P   2.69           H   22.0           G   0.15           U   1
    Residuals in seconds of arc
    031119 691  0.5+  0.0     031218 246  0.1+  0.4+    040104 413  0.0   0.1-
    031119 691  0.2+  0.5-    031218 246  1.0+  0.0     040105 941  0.1-  1.7-
    031119 691  0.2+  0.6-    031218 246  0.2-  0.8+    040105 941 (0.6-  2.3-)
    031130 691  0.1-  0.0     031218 246  0.5+  0.3+    040105 941  0.7-  1.3-
    031130 691  0.6-  0.1+    031218 246  0.2+  1.0+    040105 941  0.6+  0.4-
    031130 691  0.4-  0.1+    031218 246  0.4-  0.7+    040105 941  1.0+  1.5-
    031201 291  0.7+  0.3-    031221 704  0.0   0.7-    040110 448  0.1+  0.3+
    031201 291  0.8-  0.4+    031221 704  0.2-  0.9+    040110 448  0.3-  0.0
    031204 673  0.1+  0.0     031221 704  1.3-  0.0     120422 704  0.1+  0.3+
    031204 673  0.4+  0.1+    031221 704  0.5-  1.3+    120422 704  0.2-  0.1-
    031204 673  0.9-  0.5-    031227 448  1.5+  0.6+    120422 704  0.4+  0.6+
    031204 673  0.3+  0.0     031227 448  0.3+  0.1-    120422 704  0.1-  0.0
    031204 673  0.4-  0.3+    031227 448  0.6+  0.9-    120423 G96  0.1+  0.7-
    031204 673  0.8-  0.4-    031229 715  0.4-  0.2-    120423 G96  0.3+  0.8-
    031213 448  0.0   0.5-    031229 715  0.2-  0.1+    120423 G96  0.4+  1.0-
    031213 448  0.0   0.2+    031229 715  0.5-  0.1-    120423 G96  0.1+  0.7-
    031213 448  0.0   0.5+    031229 291  0.6+  0.8+    120423 H21  0.3+  1.3+
    031214 291  0.2-  0.1+    031229 291  0.5+  0.3+    120423 H21  0.5-  1.1+
    031214 291  0.3-  0.4+    031229 291  0.1-  0.1+    120423 H21  0.8-  0.4+
    031214 291  0.2-  0.4+    040104 413  0.1-  0.1-
    
    Ephemeris:
    2003 WH166               a,e,i = 1.93, 0.56, 1                   q = 0.8594
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2012 03 24    03 35 48.4 +18 38 05   0.2413  0.8715    52.5   114.8    23.1
    ...
    2012 04 08    04 32 52.6 +22 27 05   0.1276  0.9273    51.6   122.3    22.4
    ...
    2012 04 16    05 56 03.1 +25 56 11   0.07433 0.9720    62.9   113.2    20.7
    ...
    2012 04 22    08 42 50.5 +23 53 37   0.04968 1.0105    94.7    82.5    18.4
    2012 04 23    09 20 34.1 +21 44 14   0.04870 1.0173   102.7    74.7    18.1
    2012 04 24    09 57 39.8 +19 00 51   0.04892 1.0242   110.8    66.7    17.9
    ...
    2012 04 30    12 30 56.4 +02 32 49   0.07126 1.0670   145.8    32.0    17.8
    ...
    2012 05 08    13 44 38.9 -06 39 12   0.1262  1.1278   158.7    19.0    18.7
    ...
    2012 05 23    14 28 55.5 -11 53 36   0.2527  1.2483   156.5    18.9    20.5
    
    A. U. Tomatic                (C) Copyright 2012 MPC           M.P.E.C. 2012-H56
    

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