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  • MPEC 2013-M36 : 2012 HA2

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    M.P.E.C. 2013-M36                                Issued 2013 June 23, 15:30 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 HA2
    
                               Revision to MPEC 2012-H30
    
    Additional Observations:
         K12H02A 2C2013 06 09.33012810 36 21.307+18 23 12.94         23.7 RtEM036568
         K12H02A 2C2013 06 21.31273611 13 19.190+20 07 02.64         23.5 RtEM036568
         K12H02A 2C2013 06 21.33095411 13 22.418+20 07 08.92         23.4 RtEM036568
    
    Observer details:
    568 Mauna Kea.  Observers M. Micheli, 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 (or two decimals in degrees), reference and Delta-T
    130609 568 0.06+ 0.05+    130621 568 0.06+ 0.04+    MPO232623   -0.13 day
    
    Orbital elements:
    2012 HA2                                                 Earth MOID = 0.0619 AU
    Epoch 2013 Apr. 18.0 TT = JDT 2456400.5                 MPC
    M 106.63949              (2000.0)            P               Q
    n   0.88888511     Peri.  211.87678     +0.66145302     -0.72040721
    a   1.0712865      Node   199.58600     +0.74924910     +0.62241180
    e   0.1430455      Incl.   38.47170     -0.03325187     -0.30596897
    P   1.11           H   21.2           G   0.15           U   4
    Residuals in seconds of arc
    120418 703 (1.7+  1.3+)   120419 H21  0.1+  0.2-    120423 H21  0.1+  0.2+
    120418 703  0.1+  0.5-    120419 G96  0.1+  0.2+    120423 H21  0.2-  0.1-
    120418 703  1.0-  0.5-    120419 G96  0.1-  0.1+    120424 H36  0.3-  0.7-
    120418 703 (2.1-  0.8-)   120419 G96  0.2-  0.2+    120424 H36  0.1-  0.8-
    120418 703  1.4-  0.6-    120419 G96  0.2+  0.2+    120424 H36  0.1-  0.4+
    120418 703  0.2-  0.7+    120419 H36  0.5+  0.4-    120424 H21  0.2-  0.4-
    120418 703  0.1-  0.2-    120419 H36  0.2-  0.7-    120424 H21  0.0   0.1-
    120418 703  0.4-  0.1+    120420 J95  0.7+  0.0     120424 H21  0.5+  0.1-
    120418 H01  0.2-  0.2+    120420 J95  0.4-  0.3+    120501 291  0.3-  0.5+
    120418 H01  0.0   0.3+    120420 J95  0.4+  0.0     120501 291  0.2+  0.1+
    120418 H01  0.1-  0.1+    120420 474  0.5+  0.2+    120501 291  0.8+  0.1-
    120418 H01  0.0   0.1+    120420 474  0.0   0.0     120513 291  0.3-  0.3-
    120418 703  0.7-  0.5-    120420 474  0.2+  0.3-    120513 291  0.0   0.7+
    120418 703  0.4+  0.6-    120420 474  0.4+  0.2+    120513 291  0.1-  0.3-
    120418 703  0.5+  0.1+    120420 D90  0.3+  0.2+    130609 568  0.1+  0.1-
    120418 703  1.0-  0.5+    120420 D90  0.3-  0.3+    130621 568  0.0   0.0
    120419 H21  0.4-  0.1+    120420 D90  0.4-  0.2+    130621 568  0.1-  0.0
    120419 H21  0.2-  0.4+    120423 H21  0.1+  0.1+
    
    Ephemeris:
    2012 HA2                 a,e,i = 1.07, 0.14, 38                  q = 0.9180
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2013 05 24    09 41 12.9 +13 52 31   0.8301  1.1945    80.1    56.6    23.2
    ...
    2013 06 08    10 32 05.6 +18 07 21   0.9517  1.2106    75.9    54.4    23.5
    ...
    2013 06 16    10 57 15.0 +19 29 10   1.0169  1.2167    73.5    53.2    23.6
    ...
    2013 06 22    11 15 22.3 +20 11 07   1.0645  1.2202    71.8    52.3    23.7
    2013 06 23    11 18 20.2 +20 16 41   1.0723  1.2207    71.5    52.1    23.7
    2013 06 24    11 21 17.1 +20 21 52   1.0800  1.2211    71.2    52.0    23.7
    ...
    2013 06 30    11 38 41.6 +20 45 27   1.1251  1.2232    69.4    51.1    23.8
    ...
    2013 07 08    12 01 15.8 +20 58 56   1.1813  1.2245    67.2    50.0    23.9
    ...
    2013 07 23    12 42 14.6 +20 39 49   1.2712  1.2220    63.4    48.0    24.0
    
    A. U. Tomatic                (C) Copyright 2013 MPC           M.P.E.C. 2013-M36
    

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