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  • MPEC 2012-X20 : 2012 XR2

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    M.P.E.C. 2012-X20                                Issued 2012 Dec. 6, 00:21 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
    
                                       2012 XR2
    
    Observations:
         K12X02R* C2012 12 04.46871 07 19 10.48 +27 49 57.2          20.5 VrEX020G96
         K12X02R  C2012 12 04.47146 07 19 10.59 +27 49 28.0          20.2 VrEX020G96
         K12X02R  C2012 12 04.47426 07 19 10.70 +27 48 57.6          20.5 VrEX020G96
         K12X02R  C2012 12 04.47702 07 19 10.84 +27 48 29.0          20.9 VrEX020G96
         K12X02R IC2012 12 05.25628 07 20 04.72 +25 27 53.8          20.9 RqEX020H36
         K12X02R KC2012 12 05.26810 07 20 05.35 +25 25 46.0          20.7 RqEX020H36
         K12X02R KC2012 12 05.27993 07 20 05.87 +25 23 35.0          20.4 RqEX020H36
         K12X02R KC2012 12 05.31118107 20 06.78 +25 17 51.0          20.2 VuEX020H21
         K12X02R KC2012 12 05.31941707 20 07.12 +25 16 19.5          20.5 VuEX020H21
         K12X02R KC2012 12 05.32799907 20 07.47 +25 14 44.2          20.6 VuEX020H21
    
    Observer details:
    G96 Mt. Lemmon Survey.  Observer R. A. Kowalski.  Measurers A. Boattini,
        E. J. Christensen, A. R. Gibbs, A. D. Grauer, R. E. Hill, J. A. Johnson,
        R. A. Kowalski, S. M. Larson, R. H. McNaught.  1.5-m reflector + CCD.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers L. Buzzi, S. Foglia, T. Vorobjov, T. Linder.  0.81-m f/4.0
        astrograph + CCD.
    H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m reflector + CCD.
    
    Orbital elements:
    2012 XR2                                                 Earth MOID = 0.1220 AU
    Epoch 2012 Sept. 30.0 TT = JDT 2456200.5                MPC
    M 321.63379              (2000.0)            P               Q
    n   0.40138895     Peri.  209.11590     -0.25916099     -0.86596284
    a   1.8200882      Node   258.75845     +0.94889006     -0.14569841
    e   0.4115012      Incl.   25.85443     +0.18012003     -0.47841440
    P   2.46           H   23.2           G   0.15           U   9
    Residuals in seconds of arc
    121204 G96  0.2+  0.1+    121205 H36  0.7-  0.9-    121205 H21  0.0   0.1-
    121204 G96  0.0   0.1+    121205 H36  0.5+  1.0+    121205 H21  0.1-  0.4-
    121204 G96  0.2-  0.5-    121205 H36  0.3+  0.0
    121204 G96  0.1-  0.2+    121205 H21  0.1+  0.3+
    
    Ephemeris:
    2012 XR2                 a,e,i = 1.82, 0.41, 26                  q = 1.0711
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2012 11 06    06 10 07.6 +63 31 42   0.3792  1.2303   121.0    43.7    23.2
    ...
    2012 11 21    06 55 44.8 +53 38 36   0.2471  1.1643   130.7    40.0    22.1
    ...
    2012 11 29    07 11 44.9 +41 22 34   0.1878  1.1348   139.0    34.8    21.3
    ...
    2012 12 05    07 19 46.4 +26 15 11   0.1549  1.1158   145.0    30.4    20.7
    2012 12 06    07 20 47.7 +23 08 47   0.1508  1.1130   145.6    30.0    20.6
    2012 12 07    07 21 43.9 +19 52 57   0.1473  1.1102   145.9    29.9    20.6
    ...
    2012 12 13    07 25 39.3 -01 50 28   0.1385  1.0953   140.8    34.6    20.5
    ...
    2012 12 21    07 27 14.1 -28 11 26   0.1592  1.0808   124.0    49.0    21.2
    ...
    2013 01 05    07 24 01.9 -53 09 58   0.2486  1.0712   104.1    62.9    22.6
    
    A. U. Tomatic                (C) Copyright 2012 MPC           M.P.E.C. 2012-X20
    

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