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  • MPEC 2012-B101: 1999 AU23

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    M.P.E.C. 2012-B101                               Issued 2012 Jan. 30, 16:06 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 https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                       1999 AU23
    
                               Revision to MPEC 1999-B09
    
    Additional Observations:
         J99A23U  C2012 01 29.56225 10 39 39.064-14 58 53.44         20.3 rLEB101F51
         J99A23U  C2012 01 29.57717 10 39 37.856-14 59 02.30         20.1 iLEB101F51
         J99A23U  C2012 01 29.59067 10 39 36.755-14 59 10.57         20.2 iLEB101F51
         J99A23U  C2012 01 30.36644 10 38 35.84 -15 06 58.1          19.6 RoEB101H01
         J99A23U  C2012 01 30.37429 10 38 35.20 -15 07 02.8          19.4 RoEB101H01
         J99A23U  C2012 01 30.38307 10 38 34.47 -15 07 08.0          19.5 RoEB101H01
         J99A23U  C2012 01 30.38804 10 38 34.06 -15 07 11.0          19.5 RoEB101H01
    
    Observer details:
    F51 Pan-STARRS 1, Haleakala.  Observers N. Primak, A. Schultz, S. Watters,
        J. Thiel, T. Goggia.  Measurer PS1 Science Consortium.  1.8-m
        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.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    120129 F51 3.37- 1.99+    120130 H01 3.39- 1.99+    MPC 34041   +8.0 day
    
    Orbital elements:
    1999 AU23                                                Earth MOID = 0.4015 AU
    Epoch 2012 Mar. 14.0 TT = JDT 2456000.5                 MPC
    M  64.86394              (2000.0)            P               Q
    n   0.31005872     Peri.  117.88760     +0.57088223     -0.75620622
    a   2.1619223      Node   293.66335     +0.57531625     +0.64629884
    e   0.4114035      Incl.   20.43302     +0.58575139     +0.10222506
    P   3.18           H   17.7           G   0.15           U   3
    Residuals in seconds of arc
    990109 704  0.6+  1.5+    990117 557  0.5+  1.0-    990122 402  0.6+  0.1-
    990109 704  0.5-  0.2-    990117 046 (2.2-  2.6+)   990123 071  0.0   0.2-
    990109 704 (0.1-  2.7+)   990117 046 (2.0+  3.8+)   990123 071  0.1+  0.0
    990109 704  0.2-  1.2+    990118 402  0.5-  1.6-    990215 658  0.4+  0.2+
    990113 587  0.2+  0.3+    990118 402  1.1+  1.0-    990215 658  0.7-  0.5+
    990113 587  0.1-  0.5+    990118 402  1.0+  0.9-    990215 658  0.5+  0.1-
    990113 118  0.9-  0.2+    990118 402  0.1-  1.0-    120129 F51  0.0   0.1-
    990113 118  1.0+  1.5-    990119 046  0.2-  0.3+    120129 F51  0.1+  0.1+
    990113 118  1.6+  0.6-    990119 046  0.1-  0.7-    120129 F51  0.0   0.1+
    990116 557  0.3-  0.4+    990119 046  0.0   0.4-    120130 H01  0.1-  0.1-
    990116 557  0.4+  0.1-    990119 046  0.4-  0.2-    120130 H01  0.0   0.1-
    990117 557  1.1-  0.5+    990120 587  0.6-  0.1-    120130 H01  0.1-  0.1-
    990117 557  1.4-  0.7+    990120 587  0.5-  0.5+    120130 H01  0.1-  0.2-
    990117 557  1.3-  0.3-    990122 402  0.6+  0.7+
    990117 557  0.4-  1.5+    990122 402  0.5+  0.9+
    
    Ephemeris:
    1999 AU23                a,e,i = 2.16, 0.41, 20                  q = 1.2725
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2011 12 31    11 00 43.0 -07 25 48   1.1706  1.7568   109.0    32.0    20.6
    ...
    2012 01 15    10 54 40.8 -11 48 18   1.1081  1.8359   122.6    26.8    20.4
    ...
    2012 01 23    10 47 27.5 -13 42 50   1.0848  1.8780   130.3    23.6    20.4
    ...
    2012 01 29    10 40 22.9 -14 53 00   1.0739  1.9095   136.1    21.0    20.3
    2012 01 30    10 39 04.9 -15 03 13   1.0727  1.9147   137.0    20.5    20.3
    2012 01 31    10 37 45.1 -15 13 00   1.0717  1.9199   137.9    20.1    20.3
    ...
    2012 02 06    10 29 13.2 -16 02 01   1.0699  1.9511   143.2    17.6    20.2
    ...
    2012 02 14    10 16 53.3 -16 40 35   1.0795  1.9924   149.1    14.7    20.2
    ...
    2012 02 29    09 54 13.6 -16 33 50   1.1386  2.0684   152.5    12.8    20.3
    
    A. U. Tomatic                (C) Copyright 2012 MPC           M.P.E.C. 2012-B101
    

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