• MPC Preparation (Info)

  • MPEC 2009-C12 : 2009 BG81

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    M.P.E.C. 2009-C12                                Issued 2009 Feb. 2, 16:53 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 BG81
    
    Observations:
         K09B81G* C2009 01 31.28283 08 55 27.86 +27 03 43.7          20.3   EC012704
         K09B81G  C2009 01 31.29507 08 56 04.47 +27 05 49.9          20.1   EC012704
         K09B81G  C2009 01 31.30733 08 56 40.99 +27 07 53.3          20.4   EC012704
         K09B81G  C2009 01 31.31960 08 57 17.93 +27 09 57.9          20.1   EC012704
         K09B81G  C2009 02 01.33632 10 05 36.41 +29 34 00.9          19.7   EC012704
         K09B81G  C2009 02 01.34851 10 06 32.73 +29 35 06.2          19.7   EC012704
         K09B81G  C2009 02 01.36069 10 07 29.15 +29 36 10.6          20.0   EC012704
         K09B81G  C2009 02 01.37285 10 08 25.59 +29 37 12.2          20.1   EC012704
         K09B81G  C2009 02 01.88830410 54 41.56 +29 48 27.6          19.3 R EC012J95
         K09B81G  C2009 02 01.89807110 55 36.22 +29 48 23.0          19.3 R EC012J95
         K09B81G  C2009 02 01.90669110 56 24.44 +29 48 19.7          19.0 R EC012J95
         K09B81G  C2009 02 02.50908 11 54 30.37 +28 45 15.6          18.7 R EC012H01
         K09B81G  C2009 02 02.51057 11 54 38.89 +28 44 56.4          18.9 R EC012H01
         K09B81G  C2009 02 02.52414 11 55 56.58 +28 41 58.4          18.7 R EC012H01
         K09B81G  C2009 02 02.53593 11 57 04.19 +28 39 20.1          18.9 R EC012H01
         K09B81G  C2009 02 02.53781 11 57 14.99 +28 38 54.6          19.1 R EC012H01
         K09B81G  C2009 02 02.54085 11 57 32.42 +28 38 13.2          18.6 R EC012H01
         K09B81G  C2009 02 02.54363 11 57 49.97 +28 38 19.5          20.1 R EC012926
         K09B81G  C2009 02 02.54596 11 58 03.35 +28 37 48.5          19.6 R EC012926
    
    Observer details:
    704 Lincoln Laboratory ETS, New Mexico.  Observers M. Bezpalko, D. Torres,
        R. Kracke, G. Spitz, J. Kistler.  Measurers J. Stuart, S. Scruggs.  1.0-m
        f/2.15 reflector + CCD.
    926 Tenagra II Observatory.  Observers P. R. Holvorcem, M. Schwartz.  Measurer
        P. R. Holvorcem.  0.81-m f/7 Ritchey-Chretien + CCD.
    H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
        Measurer W. H. Ryan.  2.4-m f/8.9 reflector + CCD.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.40-m f/6.0 Schmidt-Cassegrain
        + CCD.
    
    Orbital elements:
    2009 BG81                                                Earth MOID = 0.0078 AU
    Epoch 2008 Nov. 30.0 TT = JDT 2454800.5                 MPC
    M 326.03587              (2000.0)            P               Q
    n   0.40725822     Peri.   28.42327     -0.92123884     -0.38667511
    a   1.8025589      Node   128.76578     +0.34579950     -0.86401820
    e   0.4624869      Incl.    3.12035     +0.17816201     -0.32242038
    P   2.42           H   27.7           G   0.15           U   6
    Residuals in seconds of arc
    090131 704  1.2-  0.8-    090201 704  0.2+  0.4+    090202 H01  0.0   0.0
    090131 704  1.3+  0.2+    090201 J95  0.3-  0.6+    090202 H01  0.1+  0.0
    090131 704  0.6-  0.4-    090201 J95  0.0   0.9-    090202 H01  0.2-  0.1+
    090131 704  0.1+  1.3+    090201 J95  0.1+  0.1-    090202 926  0.1+  0.1-
    090201 704  1.1-  1.3+    090202 H01  0.0   0.1+    090202 926  0.5+  0.9+
    090201 704  0.6+  0.5-    090202 H01  0.0   0.2+
    090201 704  1.2+  0.2-    090202 H01  0.1+  0.0
    
    Ephemeris:
    2009 BG81                a,e,i = 1.80, 0.46, 3                   q = 0.9689
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2009 01 29    07 37.70   +21 27.9    0.0234   1.007   163.5    16.1    20.4
    2009 01 30    08 03.12   +23 38.3    0.0196   1.004   167.5    12.3    19.9
    2009 01 31    08 41.23   +26 17.1    0.0163   1.001   170.6     9.2    19.4
    2009 02 01    09 39.81   +28 56.5    0.0135   0.998   164.9    14.9    19.2
    2009 02 02    11 04.68   +29 51.3    0.0117   0.996   149.2    30.4    19.4
    2009 02 03    12 42.63   +26 38.3    0.0115   0.993   129.1    50.4    19.9
    2009 02 04    14 04.37   +20 20.9    0.0129   0.990   110.7    68.6    20.6
    2009 02 05    15 00.00   +14 14.4    0.0154   0.988    97.3    81.8    21.5
    2009 02 06    15 36.34   +09 34.6    0.0186   0.986    88.4    90.5    22.2
    2009 02 07    16 00.83   +06 12.8    0.0222   0.984    82.5    96.2    22.8
    2009 02 08    16 18.13   +03 45.9    0.0261   0.982    78.6    99.9    23.4
    
    Timothy B. Spahr             (C) Copyright 2009 MPC           M.P.E.C. 2009-C12
    

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