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  • MPEC 2010-A80 : 2009 BT5

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    M.P.E.C. 2010-A80                                Issued 2010 Jan. 15, 13:22 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 BT5
    
                               Revision to MPEC 2009-B38
    
    Additional Observations:
         K09B05T 2C2009 09 08.22732317 07 30.430-20 23 23.99         22.4 R EA080568
         K09B05T 2C2009 09 08.22994917 07 30.862-20 23 28.20         22.5 R EA080568
         K09B05T 2C2009 09 08.23261017 07 31.292-20 23 32.31         22.6 R EA080568
         K09B05T 2C2009 12 09.21630421 43 02.751-28 21 54.75         24.3 R EA080568
    
    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
    090908 568  4.8+  5.6-    091209 568  8.0+  0.1+    MPO156163   +0.0025 day
    
    Orbital elements:
    2009 BT5                                                 Earth MOID = 0.2525 AU
    Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
    M 163.89839              (2000.0)            P               Q
    n   0.64729659     Peri.   73.27037     -0.86548374     +0.41873199
    a   1.3235301      Node   130.55240     -0.46971672     -0.86911051
    e   0.1291217      Incl.   21.21541     +0.17408072     -0.26326876
    P   1.52           H   20.7           G   0.15           U   2
    Residuals in seconds of arc
    090120 691  0.0   0.2-    090128 291  0.3+  0.0     090203 G96  0.4+  0.2+
    090120 691  0.0   0.2+    090128 291  0.0   0.8+    090203 G96  0.9+  0.4+
    090120 691  0.1-  0.3+    090129 291  0.2-  0.4+    090203 G96  1.0+  0.3+
    090121 J95  0.3+  0.2+    090129 291  0.3-  0.3+    090213 H55  0.0   0.5-
    090121 J95  0.6-  1.3-    090129 G96  0.2-  0.3-    090213 H55  0.0   0.3-
    090121 H01  0.2+  0.0     090129 G96  0.2+  0.5-    090213 H55  0.2-  0.3-
    090121 H01  0.1+  0.1-    090129 G96  0.1+  0.5-    090213 291  0.4-  0.4+
    090121 H01  0.1+  0.1-    090130 B67  0.6+  1.3+    090213 291  0.2+  0.6+
    090121 H01  0.2+  0.1-    090130 B67  0.9+  1.6+    090213 291  0.3-  0.5+
    090125 H55  0.2+  0.0     090130 B67  0.4+  0.9+    090224 H55  0.0   0.5-
    090125 H55  0.1+  0.2-    090130 A78  0.8-  0.9+    090224 H55  0.1+  0.7-
    090125 H55  0.1+  0.1-    090130 A78  1.8+  1.9-    090224 H55  0.2+  0.7-
    090125 291  0.0   0.2+    090130 A78  0.7+  0.6-    090330 H55  1.4-  0.4-
    090125 291  0.5-  0.1-    090131 G96  0.3+  0.5-    090330 H55  1.0-  0.7-
    090126 448  0.3+  0.1+    090131 G96  0.1+  0.3-    090330 H55  0.0   0.5-
    090126 448  0.0   0.1-    090131 704  0.7+  0.0     090908 568  0.0   0.1+
    090126 448  0.0   0.6-    090131 G96  0.0   0.5-    090908 568  0.1+  0.0
    090128 703  0.7-  0.1-    090131 704  0.4+  0.3+    090908 568  0.0   0.1+
    090128 703  0.0   0.0     090131 704  0.8+  0.6+    091209 568  0.1+  0.2+
    090128 703  1.0-  0.7+    090131 704  0.2+  0.5-
    090128 291  0.2-  0.0     090131 704  0.4+  0.2-
    
    Ephemeris:
    2009 BT5                 a,e,i = 1.32, 0.13, 21                  q = 1.1526
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2010 01 14    23 21.02   -20 32.7    1.902    1.493    50.9    30.8    24.3
    2010 01 24    23 47.05   -17 52.0    1.963    1.494    47.9    29.3    24.3
    2010 02 03    00 12.68   -15 03.5    2.019    1.494    45.0    27.8    24.3
    2010 02 13    00 38.06   -12 09.5    2.071    1.492    42.1    26.3    24.3
    2010 02 23    01 03.32   -09 12.3    2.117    1.489    39.3    24.9    24.3
    
    Gareth V. Williams           (C) Copyright 2010 MPC           M.P.E.C. 2010-A80
    

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