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  • MPEC 2013-P62 : 2012 BB2

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    M.P.E.C. 2013-P62                                Issued 2013 Aug. 12, 12:42 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.minorplanetcenter.net/    ISSN 1523-6714
    
                                       2012 BB2
    
                               Revision to MPEC 2012-B20
    
    Additional Observations:
         K12B02B 2C2013 08 08.49711123 04 41.289-27 27 07.63         22.1 RtEP062568
         K12B02B 2C2013 08 08.50086123 04 41.185-27 27 13.39         22.0 RtEP062568
         K12B02B 2C2013 08 08.50464223 04 41.073-27 27 19.46         22.0 RtEP062568
         K12B02B 2C2013 08 11.57781423 03 15.761-28 48 45.08         22.3 RtEP062568
         K12B02B 2C2013 08 11.58156023 03 15.617-28 48 51.05         22.2 RtEP062568
    
    Observer details:
    568 Mauna Kea.  Observers D. J. Tholen, M. Micheli, M. C. Kotson.  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
    130808 568 27.7-  6.4-    130811 568 28.8-  6.3-    MPO227509   +0.0065 day
    
    Orbital elements:
    2012 BB2                                                 Earth MOID = 0.2368 AU
    Epoch 2013 Apr. 18.0 TT = JDT 2456400.5                 MPC
    M 227.81415              (2000.0)            P               Q
    n   0.45695361     Peri.  324.51309     +0.16897582     -0.94929484
    a   1.6693778      Node   114.42448     +0.95812824     +0.09512168
    e   0.2877595      Incl.   16.92825     +0.23116540     +0.29965174
    P   2.16           H   20.7           G   0.15           U   2
    Residuals in seconds of arc
    120117 704  0.5+  0.2+    120118 461  0.2-  0.6+    120124 H21  0.1+  0.1-
    120117 704  0.6+  0.0     120118 461  0.2-  0.0     120124 H21  1.1-  0.5-
    120117 704  1.0-  1.0+    120119 807  0.0   0.1+    120125 H21  0.1+  0.1+
    120117 704  0.1+  0.8+    120119 807  0.0   0.1+    120125 H21  0.1+  0.0
    120118 G48  0.8-  0.1-    120119 807  0.2-  0.1+    120125 H21  0.1+  0.1-
    120118 G48  0.7-  0.5+    120119 807  0.0   0.0     120130 H21  0.2-  0.3-
    120118 G48  0.2-  0.1-    120119 704  0.1-  0.9-    120130 H21  0.1-  0.3-
    120118 G48  0.3-  0.0     120119 704  1.0+  0.1+    120130 H21  0.1-  0.2-
    120118 G48  0.3+  0.1-    120119 704  0.3+  0.2-    120130 H21  0.1+  0.3-
    120118 G48  0.3-  0.3+    120119 704  1.1+  1.3-    120130 I15  0.0   0.6-
    120118 807  0.3-  0.3-    120119 J87  0.1+  0.3+    120130 I15  0.1+  0.0
    120118 807  0.1-  0.2-    120119 J87  0.1+  0.2+    120130 I15  1.0-  0.3-
    120118 807  0.0   0.2-    120119 J87  0.5-  0.2+    120215 291  0.0   0.3+
    120118 807  0.0   0.3-    120121 204  0.0   0.1+    120215 291  0.1+  0.3+
    120118 704  0.6+  0.4+    120121 204  0.9+  0.0     120215 291  0.6+  0.4+
    120118 H36  0.0   0.1-    120122 807  0.1+  0.0     120217 H21  0.0   0.7-
    120118 H36  0.1-  0.1-    120122 807  0.0   0.0     120217 H21  0.1-  0.1-
    120118 704  1.1+  1.0+    120122 807  0.3-  0.1+    120217 H21  0.1-  0.4+
    120118 H36  0.2-  0.0     120122 807  0.1+  0.1-    120313 291  0.0   0.2-
    120118 704  0.3+  0.2-    120122 807  0.1+  0.1+    120313 291  0.2+  0.4+
    120118 104  0.3-  0.0     120122 807  0.2-  0.0     120313 291  0.6+  0.2-
    120118 104  0.2+  0.2-    120123 204  0.0   0.1-    120326 H21  0.2-  0.4-
    120118 595  0.2-  0.2-    120123 204  0.0   0.0     120326 H21  0.2-  0.6-
    120118 595  0.2+  0.9+    120123 204  0.1+  0.1-    120326 H21  0.1+  0.3-
    120118 461  0.0   0.0     120123 203  0.1-  0.6-    130808 568  0.1+  0.1-
    120118 461  0.1-  0.4-    120123 203  0.0   0.4-    130808 568  0.2+  0.1+
    120118 461  0.1-  0.3+    120124 H21  0.1-  0.5-    130808 568  0.1+  0.1-
    120118 461  0.0   0.3-    120124 H21  0.1+  0.2-    130811 568  0.1-  0.0
    120118 461  0.2+  0.0     120124 H21  0.6-  0.1+    130811 568  0.2-  0.0
    120118 461  0.3-  0.3+    120124 H21  0.0   0.3-
    
    Ephemeris:
    2012 BB2                 a,e,i = 1.67, 0.29, 17                  q = 1.1890
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2013 07 13    23 01 03.3 -18 11 19   0.9912  1.8220   130.3    25.2    23.1
    ...
    2013 07 28    23 06 21.6 -22 48 25   0.8498  1.7705   143.2    20.1    22.6
    ...
    2013 08 05    23 05 47.4 -25 57 15   0.7899  1.7419   149.5    17.2    22.3
    ...
    2013 08 11    23 03 34.0 -28 33 08   0.7531  1.7199   153.3    15.4    22.1
    2013 08 12    23 03 02.6 -28 59 55   0.7477  1.7162   153.8    15.1    22.1
    2013 08 13    23 02 28.5 -29 26 52   0.7425  1.7125   154.2    14.9    22.1
    ...
    2013 08 19    22 58 10.0 -32 10 06   0.7158  1.6900   155.6    14.3    21.9
    ...
    2013 08 27    22 50 13.0 -35 42 29   0.6922  1.6594   153.7    15.7    21.9
    ...
    2013 09 11    22 31 09.5 -41 07 21   0.6820  1.6008   142.1    22.7    22.0
    
    A. U. Tomatic                (C) Copyright 2013 MPC           M.P.E.C. 2013-P62
    

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