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  • MPEC 2010-B59 : 2009 EN2

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    M.P.E.C. 2010-B59                                Issued 2010 Jan. 29, 17:22 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
    
                                       2009 EN2
    
                               Revision to MPEC 2009-E45
    
    Additional Observations:
         K09E02N 2C2010 01 19.25162204 33 49.012-36 14 03.93         22.3 R EB059568
         K09E02N 2C2010 01 19.25464604 33 48.919-36 13 59.61         22.4 R EB059568
         K09E02N 2C2010 01 19.25796604 33 48.828-36 13 54.77         22.2 R EB059568
         K09E02N 2C2010 01 19.26106504 33 48.728-36 13 50.32         22.7 R EB059568
         K09E02N 2C2010 01 19.26386204 33 48.651-36 13 46.33         22.5 R EB059568
         K09E02N 2C2010 01 27.27294004 31 26.373-32 59 07.03         22.6 R EB059568
         K09E02N 2C2010 01 27.27816904 31 26.322-32 58 59.18         22.8 R EB059568
    
    Observer details:
    568 Mauna Kea.  Observers M. Micheli, G. T. Elliott, D. J. Tholen.  Measurer
        D. J. Tholen.  2.24-m University of Hawaii reflector.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    100119 568 0.04- 0.02-    100127 568 0.04- 0.02-    MPO157520   -0.010 day
    
    Orbital elements:
    2009 EN2                                                 Earth MOID = 0.1393 AU
    Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
    M 109.99831              (2000.0)            P               Q
    n   0.46122875     Peri.  138.08230     +0.34809967     +0.83650487
    a   1.6590462      Node   144.87117     -0.92794687     +0.24332373
    e   0.5252921      Incl.   47.34458     +0.13319622     -0.49097166
    P   2.14           H   18.4           G   0.15           U   3
    Residuals in seconds of arc
    090303 703  0.7-  0.8-    090307 G96  0.1+  0.3-    090319 291  0.6+  0.7+
    090303 703  0.1-  0.4-    090307 G96  0.6+  0.4-    090409 H55  0.1-  1.9+
    090303 703 (0.6+  3.1-)   090307 G96  0.3+  0.0     090409 H55  0.4-  0.3-
    090303 703  1.1-  0.3-    090307 G96  0.5+  0.2-    100119 568  0.0   0.0
    090303 703  0.8-  0.7-    090307 G96  0.9+  0.6-    100119 568  0.0   0.0
    090303 703  1.4-  0.8-    090307 G96  0.2+  0.2-    100119 568  0.1+  0.1+
    090306 J95  0.1-  0.3-    090307 G96  0.3+  0.3-    100119 568  0.0   0.1+
    090306 J95  0.2+  0.1-    090307 G96  0.3+  0.3-    100119 568  0.0   0.1+
    090306 J95  0.0   0.1+    090319 J95  0.2+  0.3-    100127 568  0.1-  0.2-
    090306 J95  0.8+  0.0     090319 J95  1.5-  0.9+    100127 568  0.0   0.0
    090307 854  1.3+  0.7+    090319 291  0.8+  0.1+
    
    Ephemeris:
    2009 EN2                 a,e,i = 1.66, 0.53, 47                  q = 0.7876
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2010 01 24    04 32.11   -34 19.1    1.886    2.317   103.1    24.5    22.7
    2010 02 03    04 31.26   -30 14.3    1.981    2.348    99.1    24.5    22.9
    2010 02 13    04 33.61   -26 13.2    2.086    2.377    94.5    24.5    23.0
    
    Sonia Keys                   (C) Copyright 2010 MPC           M.P.E.C. 2010-B59
    

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