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  • MPEC 2009-Y18 : 2009 AM15

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    M.P.E.C. 2009-Y18                                Issued 2009 Dec. 17, 03:45 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 AM15
    
                               Revision to MPEC 2009-A47
    
    Additional Observations:
         K09A15M 2C2009 11 09.64933811 12 44.685-11 20 07.60         20.9 R EY018568
         K09A15M 2C2009 12 09.61899712 47 05.816-16 20 57.92         21.1 R EY018568
         K09A15M 2C2009 12 09.62030312 47 06.097-16 20 58.55         21.2 R EY018568
         K09A15M 2C2009 12 09.62266312 47 06.618-16 20 59.76         21.1 R EY018568
    
    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, reference and Delta-T
    091109 568  2.7-  1.0-    091209 568  4.2-  0.5-    MPO156160   +0.0010 day
    
    Orbital elements:
    2009 AM15                                                Earth MOID = 0.0525 AU
    Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
    M 274.17780              (2000.0)            P               Q
    n   1.34577151     Peri.  131.46551     +0.48680666     +0.86590977
    a   0.8124971      Node   166.22100     -0.87337006     +0.48014015
    e   0.4871329      Incl.   28.86410     +0.01562104     -0.14023445
    P   0.73           H   18.8           G   0.15           U   4
    Residuals in seconds of arc
    090106 E12  0.2+  0.2+    090118 E12  0.0   0.1+    090219 E12  0.5-  0.6-
    090106 E12  0.0   0.3+    090118 E12  0.2-  0.0     090228 E12  0.6+  0.3-
    090106 E12  0.4-  0.1+    090119 E12  0.3+  0.3-    090228 E12  0.4+  0.3-
    090106 E12  0.5+  0.1-    090119 E12  0.0   0.1+    090314 E12  0.2+  0.3-
    090106 E12  0.2+  0.0     090125 E12  0.2-  0.1-    090314 E12  0.3+  0.1+
    090108 E12  0.5+  0.0     090125 E12  0.8-  0.2+    090315 H55  0.7-  0.1-
    090108 E12  0.2-  0.3-    090201 E12  0.1+  0.0     090315 H55  0.7-  0.1+
    090108 E12  0.2-  0.2-    090202 E12  0.3+  0.1+    090315 H55  0.0   0.1+
    090113 E12  0.1+  0.1+    090202 E12  0.2-  0.4+    090404 H55  0.1+  0.2+
    090113 E12  0.2+  0.0     090202 E12  0.5-  0.6+    090404 H55  0.6+  0.3+
    090114 E12  0.0   0.1-    090219 448 (1.9+  2.7-)   091109 568  0.0   0.0
    090114 E12  0.1+  0.0     090219 448 (0.1-  2.1-)   091209 568  0.1+  0.0
    090116 E12  0.2-  0.1+    090219 448  0.2-  0.3-    091209 568  0.0   0.0
    090116 E12  0.1+  0.0     090219 E12  0.2+  0.3-    091209 568  0.0   0.0
    
    Ephemeris:
    2009 AM15                a,e,i = 0.81, 0.49, 29                  q = 0.4167
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2009 12 15    13 07.79   -17 03.3    1.128    1.083    61.2    52.8    21.2
    2009 12 25    13 51.16   -18 02.8    1.033    1.027    61.2    57.1    21.0
    2010 01 04    14 42.49   -18 23.4    0.948    0.959    59.5    62.1    20.8
    2010 01 14    15 43.21   -17 44.1    0.883    0.880    56.0    67.8    20.6
    2010 01 24    16 52.78   -15 46.3    0.852    0.790    50.3    73.5    20.5
    2010 02 03    18 07.70   -12 36.7    0.871    0.690    43.1    77.4    20.4
    2010 02 13    19 23.25   -09 00.6    0.947    0.584    35.1    76.3    20.2
    
    Gareth V. Williams           (C) Copyright 2009 MPC           M.P.E.C. 2009-Y18
    

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