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  • MPEC 2015-N20 : 2007 WU3

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    M.P.E.C. 2015-N20                                Issued 2015 July  9, 10:33 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
    
                                       2007 WU3
    
                               Revision to MPEC 2007-W30
    
    Additional Observations:
         K07W03U  C2015 07 08.19652 17 26 19.01 +19 11 51.4          19.8 RoEN020926
         K07W03U  C2015 07 08.19994 17 26 19.20 +19 11 23.9          19.6 RoEN020926
         K07W03U  C2015 07 08.20332 17 26 19.38 +19 10 55.3          19.8 RoEN020926
         K07W03U  C2015 07 08.25575 17 26 22.45 +19 03 40.2          19.6 RoEN020926
         K07W03U  C2015 07 08.25917 17 26 22.61 +19 03 12.2          20.0 RoEN020926
         K07W03U  C2015 07 08.26256 17 26 22.82 +19 02 43.8          20.0 RoEN020926
         K07W03U KC2015 07 09.33006 17 28 12.38 +16 40 51.0          19.7 RoEN020291
         K07W03U KC2015 07 09.33110 17 28 12.45 +16 40 42.7          19.3 RoEN020291
         K07W03U KC2015 07 09.33214 17 28 12.51 +16 40 34.7          19.3 RoEN020291
    
    Observer details:
    291 LPL/Spacewatch II.  Observer T. H. Bressi.  1.8-m f/2.7 reflector + CCD.
    926 Tenagra II Observatory.  Observers M. Schwartz, P. R. Holvorcem.  Measurer
        M. Schwartz.  0.41-m f/3.75 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
    150708 926 0.82- 0.07-    150709 291 0.78- 0.06-    MPO201118   +0.066 day
    
    Orbital elements:
    2007 WU3                                                 Earth MOID = 0.0399 AU
    Epoch 2015 June 27.0 TT = JDT 2457200.5                 MPC
    M  81.45604              (2000.0)            P               Q
    n   0.97028644     Peri.  351.35063     -0.98328574     -0.18206413
    a   1.0104994      Node   178.15775     +0.16943967     -0.91774792
    e   0.2043823      Incl.    2.38906     +0.06662838     -0.35297507
    P   1.02           H   23.7           G   0.15           U   4
    Residuals in seconds of arc
    071107 705  0.3+  0.1-    071119 G96  0.3+  0.4-    071119 474  0.1-  0.5-
    071107 705  0.2+  0.2-    071119 G96  0.1+  0.1+    150708 926  0.4+  0.4-
    071107 705  0.4+  0.0     071119 G96  0.1-  0.3-    150708 926  0.2+  0.4+
    071118 703  0.8+  0.3+    071119 G96  0.0   0.1-    150708 926  0.1-  0.3-
    071118 703  0.2-  0.4-    071119 673  0.2-  0.1-    150708 926  0.3+  0.4-
    071118 703  1.5-  0.3+    071119 673  1.2+  1.0+    150708 926  0.2-  0.0
    071118 703 (2.4-  0.2+)   071119 673  0.5+  0.7+    150708 926  0.0   0.2-
    071118 703  0.2+  0.4-    071119 673  0.4-  0.1-    150709 291  0.2-  0.3+
    071118 703 (1.6+  0.1+)   071119 474  0.4-  0.1-    150709 291  0.0   0.1+
    071118 703 (0.0   1.7-)   071119 474  0.9-  0.1+    150709 291  0.1-  0.1+
    
    Ephemeris:
    2007 WU3                 a,e,i = 1.01, 0.20, 2                   q = 0.8040
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2015 06 09    06 34 15.9 +55 57 04   0.07228 0.9582    36.8   140.6    24.8
    ...
    2015 06 24    15 43 10.6 +71 03 06   0.04315 1.0114    82.2    95.4    20.3
    ...
    2015 07 02    17 09 49.2 +37 24 29   0.04910 1.0389   115.7    61.8    19.4
    ...
    2015 07 08    17 25 54.6 +19 39 59   0.06236 1.0588   131.1    46.3    19.6
    2015 07 09    17 27 42.7 +17 24 13   0.06504 1.0620   132.9    44.6    19.6
    2015 07 10    17 29 22.4 +15 18 15   0.06783 1.0652   134.4    43.0    19.7
    ...
    2015 07 16    17 37 31.2 +05 26 11   0.08641 1.0839   139.8    37.2    20.1
    ...
    2015 07 24    17 46 34.1 -02 57 24   0.1150  1.1074   140.8    35.4    20.7
    ...
    2015 08 08    18 04 18.8 -11 42 01   0.1771  1.1460   134.9    38.8    21.8
    
    A. U. Tomatic                (C) Copyright 2015 MPC           M.P.E.C. 2015-N20
    

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