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  • MPEC 2009-F106: 2004 HC2

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    M.P.E.C. 2009-F106                               Issued 2009 Mar. 31, 14:43 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
    
                                       2004 HC2
    
                               Revision to MPEC 2004-H40
    
    Additional Observations:
         K04H02C  C2009 03 30.42301 17 08 22.66 +27 10 53.6          19.5 V EF106703
         K04H02C  C2009 03 30.43160 17 08 22.27 +27 12 12.2          19.2 V EF106703
         K04H02C  C2009 03 30.44019 17 08 21.87 +27 13 28.1          19.6 V EF106703
         K04H02C  C2009 03 31.45591 17 07 41.08 +29 40 43.2          19.6 V EF106G96
         K04H02C  C2009 03 31.46664 17 07 40.51 +29 42 14.4          19.6 V EF106G96
         K04H02C  C2009 03 31.47744 17 07 39.93 +29 43 46.3          19.5 V EF106G96
         K04H02C  C2009 03 31.48813 17 07 39.36 +29 45 17.1          19.5 V EF106G96
         K04H02C  C2009 03 31.50677 17 07 38.38 +29 47 55.4          19.6 V EF106G96
         K04H02C  C2009 03 31.50729 17 07 38.35 +29 47 59.9          19.6 V EF106G96
         K04H02C  C2009 03 31.50768 17 07 38.35 +29 48 03.6          19.4 V EF106G96
         K04H02C  C2009 03 31.50820 17 07 38.31 +29 48 07.7          19.7 V EF106G96
    
    Observer details:
    703 Catalina Sky Survey.  Observer A. R. Gibbs.  Measurers E. C. Beshore,
        A. Boattini, G. J. Garradd, A. R. Gibbs, A. D. Grauer, R. E. Hill,
        R. A. Kowalski, S. M. Larson, R. H. McNaught.  0.68-m Schmidt + CCD.
    G96 Mt. Lemmon Survey.  Observer R. A. Kowalski.  Measurers E. C. Beshore,
        A. Boattini, G. J. Garradd, A. R. Gibbs, A. D. Grauer, R. E. Hill,
        R. A. Kowalski, S. M. Larson, R. H. McNaught.  1.5-m 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
    090330 703 0.73+ 0.25+    090331 G96 0.75+ 0.15+    MPO 66364   -0.82 day
    
    Orbital elements:
    2004 HC2                                                 Earth MOID = 0.0683 AU
    Epoch 2009 June 18.0 TT = JDT 2455000.5                 MPC
    M  89.37796              (2000.0)            P               Q
    n   0.60338211     Peri.  303.16960     -0.62454309     -0.76694304
    a   1.3869935      Node   190.36779     +0.61554770     -0.59959482
    e   0.3117678      Incl.   55.02208     -0.48067344     +0.22865787
    P   1.63           H   19.4           G   0.15           U   4
    Residuals in seconds of arc
    040419 704  0.1+  0.2-    040420 587  0.8-  1.0-    040524 673  0.5+  0.1+
    040419 704  0.7-  0.1+    040420 176  0.0   0.4-    040524 673  0.5+  0.1+
    040419 704  1.0+  1.0+    040421 704  0.1-  0.1+    040524 673  0.5+  0.2-
    040419 704  0.0   0.4+    040421 704  1.1-  0.7-    040524 673  0.3+  0.2-
    040419 704  0.3+  1.0+    040421 704  0.4-  0.2-    040525 673  0.1+  1.1+
    040420 704  0.1-  1.0-    040421 704  0.7-  0.5-    040525 673  0.4+  0.5+
    040420 704  0.0   0.2-    040421 854  0.3-  0.9+    040525 673  0.4+  0.5+
    040420 704  0.7-  0.4-    040421 854  0.3-  0.6-    040525 673  0.1+  0.1-
    040420 704  1.0+  0.4+    040421 673  0.5+  0.2-    040526 J50  0.6+  0.1-
    040420 704  0.5-  0.5+    040421 673  0.2+  0.1-    040526 J50  0.7+  0.0
    040420 704  0.0   0.3+    040421 673  0.2-  0.4+    040526 J50  0.6+  0.1-
    040420 704  0.9+  0.0     040421 854  0.2-  0.1+    040526 J50  0.7+  0.0
    040420 704  0.3+  0.7+    040421 673  0.2+  0.1+    040526 J50  0.6+  0.0
    040420 704  0.1-  1.1-    040421 673  0.6+  0.9+    090330 703  0.8-  0.6-
    040420 704  0.0   0.4-    040421 673  0.2+  0.5+    090330 703  0.7-  1.4+
    040420 704  0.5-  1.1-    040427 673  0.2-  0.8+    090330 703  0.6-  0.8+
    040420 704  0.3-  0.7-    040427 673  0.6-  0.0     090331 G96  0.3+  0.4+
    040420 704  1.3+  1.1-    040427 673  0.5-  0.5-    090331 G96  0.2+  0.1+
    040420 704  0.5+  0.8-    040427 673  1.0-  0.3-    090331 G96  0.1+  0.1+
    040420 704  1.1+  0.3+    040502 926  1.3-  0.8+    090331 G96  0.0   0.1-
    040420 587  0.2-  0.0     040502 926  0.3+  0.4-    090331 G96  0.1+  0.2-
    040420 587  0.0   1.4+    040502 926  0.4+  0.5+    090331 G96  0.1+  0.1-
    040420 176  0.0   0.7-    040509 649  0.9+  0.4+    090331 G96  0.3+  0.3+
    040420 176  0.1-  0.6-    040509 649  1.4+  0.3+    090331 G96  0.2+  0.0
    040420 176  0.1-  0.5-    040509 649  0.4+  0.4-
    
    Ephemeris:
    2004 HC2                 a,e,i = 1.39, 0.31, 55                  q = 0.9546
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2009 03 30    17 08.63   +26 07.6    0.336    1.145   107.4    56.4    19.4
    2009 04 09    16 58.76   +46 11.0    0.423    1.191   106.2    53.8    19.9
    2009 04 19    16 40.57   +57 48.5    0.539    1.239   102.6    52.3    20.4
    2009 04 29    16 14.78   +64 09.4    0.663    1.287    98.7    50.7    20.9
    2009 05 09    15 45.43   +67 14.0    0.787    1.334    95.1    48.9    21.3
    2009 05 19    15 18.31   +68 12.0    0.905    1.380    92.0    47.1    21.7
    2009 05 29    14 57.86   +67 46.4    1.016    1.425    89.3    45.3    21.9
    
    Sonia Keys                   (C) Copyright 2009 MPC           M.P.E.C. 2009-F106
    

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    MPEC number:

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    • B01 (the abbreviated form)