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  • MPEC 2009-B68 : 2005 YR3

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    M.P.E.C. 2009-B68                                Issued 2009 Jan. 29, 04:26 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 http://www.cfa.harvard.edu/iau/mpc.html  ISSN 1523-6714
    
                                       2005 YR3
    
                               Revision to MPEC 2005-Y30
    
    Additional Observations:
         K05Y03R 2C2009 01 25.56141413 42 53.913+20 57 30.45         20.4 R EB068568
         K05Y03R 2C2009 01 25.56220413 42 54.152+20 57 32.47         20.4 R EB068568
         K05Y03R 2C2009 01 28.63996414 01 21.327+23 10 23.82         19.8 R EB068568
         K05Y03R 2C2009 01 28.64075714 01 21.616+23 10 26.04         19.7 R EB068568
         K05Y03R 2C2009 01 28.64155714 01 21.899+23 10 28.24         19.8 R EB068568
    
    Observer details:
    568 Mauna Kea.  Observers A. Draginda, R. Zelman.  Measurers D. J. Tholen,
        M. Micheli, G. T. Elliott.  3.6-m reflector + MegaCam.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    090125 568 0.37- 0.65+    090128 568 0.38- 0.78+    MPO 98031   +0.14 day
    
    Orbital elements:
    2005 YR3                                                 Earth MOID = 0.0105 AU
    Epoch 2008 Nov. 30.0 TT = JDT 2454800.5                 MPC
    M 133.20818              (2000.0)            P               Q
    n   1.33079816     Peri.  222.55088     +0.40145534     +0.91394140
    a   0.8185802      Node    71.19762     -0.82247751     +0.38835216
    e   0.2726383      Incl.    3.60594     -0.40294461     +0.11787162
    P   0.74           H   23.4           G   0.15           U   2
    Residuals in seconds of arc
    051222 704  0.0   0.3+    051229 147  0.3-  0.1-    060118 F65  0.6+  0.6+
    051222 704  0.8+  0.1-    051229 147  0.2-  0.1-    060118 F65  0.7+  0.3+
    051222 704  0.2-  0.1-    051229 147  0.0   0.1-    060121 291  0.3-  1.1-
    051223 704  0.9+  0.0     051230 696  0.2-  0.3-    060121 291  0.1+  0.0
    051223 704  0.8+  0.1-    051230 696  0.2-  0.2+    060121 291  0.3-  0.9-
    051223 704  0.3+  0.4+    051231 448  0.3+  0.3-    060125 734 (1.5+  0.6-)
    051223 704  0.5+  0.1-    051231 448  0.3-  0.2-    060125 734 (2.0+  0.6-)
    051224 143  0.6-  0.6-    051231 448  0.5-  0.5-    060125 734  0.7+  1.1+
    051224 143  0.3-  0.5-    060103 147  0.2-  0.2-    060125 734 (0.2+  1.9-)
    051224 143  0.4-  0.8-    060103 147  0.3+  0.4+    060125 696  0.2-  0.4+
    051226 734  0.1-  0.1-    060104 734  0.3+  0.3-    060125 696 (1.7-  0.0 )
    051226 734  0.3+  0.3-    060104 734  0.7-  1.2-    060125 291  0.5+  0.7-
    051226 734  0.6-  0.1+    060106 F65  0.4+  0.1+    060125 291  0.6+  0.2+
    051226 734  0.8+  0.1-    060106 F65  0.1+  0.0     060125 291  0.1+  0.0
    051226 291 (1.1-  1.7+)   060106 F65  0.4+  0.3+    060126 291 (3.0+  0.1+)
    051226 291 (0.6-  2.2+)   060106 A48  0.4+  0.1+    060126 291  0.1-  0.2-
    051226 291  0.1+  1.2+    060106 A48  0.2+  0.2-    060126 291  0.0   0.3-
    051228 J95  0.1-  0.1-    060106 A48  0.2+  0.2+    060130 734  0.6-  0.1+
    051228 J95  0.3-  0.1+    060106 A48  0.4+  0.4+    060130 734 (1.8-  1.4+)
    051228 J95  0.1-  0.0     060106 147  0.2+  0.1+    060130 734 (1.6-  0.8+)
    051228 701  0.4+  0.2+    060106 147  0.3+  0.1+    090125 568  0.2+  0.1+
    051228 701 (1.7-  0.5+)   060106 147  0.1+  0.1-    090125 568  0.2+  0.1+
    051228 701 (2.6+  0.1-)   060118 734  0.5+  0.1+    090128 568  0.1-  0.0
    051229 734  0.3+  0.3+    060118 734  0.2-  0.5+    090128 568  0.0   0.0
    051229 734  0.1+  0.1-    060118 734  0.4+  0.3-    090128 568  0.1-  0.1-
    051229 734  0.8+  0.1-    060118 F65  0.9+  0.6+
    051229 734  0.6+  0.4-    060118 F65  0.7+  0.1+
    
    Ephemeris:
    2005 YR3                 a,e,i = 0.82, 0.27, 4                   q = 0.5954
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2009 01 29    14 03.72   +23 27.0    0.103    1.019   106.5    68.0    20.9
    2009 01 31    14 17.99   +25 04.2    0.0969   1.015   105.3    69.4    20.8
    2009 02 02    14 34.21   +26 48.2    0.0913   1.011   103.6    71.3    20.7
    2009 02 04    14 52.77   +28 37.3    0.0862   1.007   101.5    73.7    20.7
    2009 02 06    15 14.07   +30 28.4    0.0816   1.002    98.8    76.6    20.6
    2009 02 08    15 38.50   +32 16.5    0.0775   0.997    95.5    80.0    20.6
    2009 02 10    16 06.29   +33 54.5    0.0742   0.992    91.6    84.1    20.7
    2009 02 12    16 37.39   +35 13.4    0.0717   0.986    87.1    88.8    20.8
    2009 02 14    17 11.27   +36 03.5    0.0701   0.980    82.0    93.9    20.9
    2009 02 16    17 46.86   +36 16.6    0.0694   0.974    76.5    99.5    21.2
    2009 02 18    18 22.67   +35 48.9    0.0698   0.968    70.9   105.2    21.4
    2009 02 20    18 57.15   +34 42.4    0.0712   0.961    65.2   111.0    21.8
    2009 02 22    19 29.05   +33 04.0    0.0736   0.954    59.6   116.5    22.2
    2009 02 24    19 57.67   +31 03.7    0.0770   0.947    54.4   121.8    22.7
    2009 02 26    20 22.79   +28 51.0    0.0813   0.939    49.5   126.7    23.2
    2009 02 28    20 44.57   +26 34.0    0.0863   0.932    45.1   131.1    23.7
    
    A. U. Tomatic                (C) Copyright 2009 MPC           M.P.E.C. 2009-B68
    

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