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IAU Minor Planet Center

Minor Planet Center

MPEC 2004-B61 : 2000 AC6

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M.P.E.C. 2004-B61                                Issued 2004 Jan. 29, 05:43 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.

         Supported in part by the Steven and Michele Kirsch Foundation
             Prepared using the Tamkin Foundation Computer Network

                              MPC@CFA.HARVARD.EDU
          URL http://cfa-www.harvard.edu/iau/mpc.html  ISSN 1523-6714

                                   2000 AC6

                           Revision to MPEC 2000-A18

Additional Observations:
     K00A06C 2C2003 10 29.64299509 34 58.567+10 36 59.93         23.3 R EB061568
     K00A06C 2C2003 10 30.61789809 37 22.131+10 29 37.27         22.9 R EB061568
     K00A06C 2C2003 10 30.62321209 37 22.890+10 29 34.93         22.8 R EB061568

Observer details:
568 Mauna Kea.  Observer F. Bernardi.  Measurers F. Bernardi, D. J. Tholen.
    2.2-m University of Hawaii reflector + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
031029 568 53.7- 18.1-    031030 568 55.4- 17.4-    MPC 39568   +0.067 day

Orbital elements:
2000 AC6                                                             PHA 0.011
Epoch 2003 Dec. 27.0 TT = JDT 2453000.5                 MPC
M 193.31949              (2000.0)            P               Q
n   1.25150400     Peri.  187.47914     +0.33476702     +0.93889017
a   0.8528014      Node   102.10524     -0.86024711     +0.33920401
e   0.2859894      Incl.    4.69913     -0.38458542     +0.05853106
P   0.79           H   21.6           G   0.15           U   3
Residuals in seconds of arc
000104 704  0.4+  0.1-    000106 651  0.0   0.7-    000124 540  1.8+  1.3-
000104 704  0.8+  0.2+    000106 651  0.1-  0.5-    000125 402  0.7+  0.0
000104 704  0.2+  0.2+    000106 651  0.0   0.4-    000125 402  0.0   0.2+
000104 704  0.4+  0.2+    000106 704  0.0   0.3+    000125 402  0.4-  0.2+
000104 704  0.1+  0.8+    000106 704  0.7-  0.6-    000125 046  0.2+  0.0
000105 699 (2.3+  0.8-)   000106 704  0.3-  0.7-    000125 046  0.4-  0.4-
000105 699  1.3+  0.8-    000106 704  0.1+  0.3-    000125 046  0.2+  0.0
000105 704  0.9-  0.4-    000106 670 (0.5+  2.4-)   000125 046  0.2-  0.2-
000105 670  1.8+  0.1-    000106 704  0.0   0.1-    000125 046  0.7-  0.3+
000105 699  1.7+  0.7-    000106 670 (1.5-  2.1-)   000125 118  0.2-  0.0
000105 704  0.5-  0.3-    000106 704  0.2-  0.7-    000125 118  0.3-  0.2+
000105 704  0.5-  0.0     000106 704  0.4+  0.1+    000126 106  0.4-  0.5-
000105 670  0.2+  0.9-    000108 402  0.8-  0.6+    000126 106  1.0-  0.2-
000105 704  0.2+  0.7-    000108 402  0.1+  0.6+    000127 704  0.3+  0.2+
000105 704  0.7-  0.3-    000110 360  0.3-  0.1-    000127 704  0.2-  0.1+
000105 670  1.1-  1.6-    000110 360  0.4-  0.3-    000127 704  0.2-  0.3+
000105 422  0.1-  0.1-    000110 360  0.9-  0.2+    000127 704  0.1+  0.6+
000105 422  0.2-  0.1+    000111 587  0.4+  0.4+    000127 704  0.1-  0.7+
000105 422  0.3+  0.5-    000111 587  0.2+  0.3+    000127 360  0.0   0.5+
000105 587  1.0-  0.1+    000113 046  0.3-  0.3+    000127 360  0.2+  0.1+
000105 587  0.2+  0.2-    000113 046  0.4-  0.1+    000127 360  0.2-  0.4-
000105 557  0.3-  0.1-    000113 046  0.4-  0.2+    000127 118  0.5-  0.2+
000105 557  0.6-  0.1+    000113 046  0.4-  0.5+    000127 118  0.1-  0.0
000105 557  0.2-  0.6+    000114 747  0.0   0.0     000127 118  0.1-  0.3+
000105 557  0.2+  0.6+    000114 747  0.1-  0.3+    000129 402  0.4-  0.5-
000105 595  0.0   0.7+    000114 747  0.2-  0.1-    000129 402  1.2-  0.1-
000105 595  0.9-  0.1-    000114 747  0.0   0.1+    000129 402  0.4+  0.3-
000105 046  0.0   0.8+    000114 747  0.1-  0.2+    000130 587  0.2+  0.2-
000105 595  0.4+  0.5-    000114 540  0.2-  0.1+    000130 587  0.1-  0.4+
000105 046  0.2+  0.0     000114 540  0.2+  0.4+    000201 118  0.7+  0.1-
000105 046  0.3+  0.2+    000114 540  0.1-  0.3-    000201 118  0.2+  0.7-
000105 046  0.2-  0.6+    000114 540  0.6-  0.2+    000204 118  0.8+  0.1-
000106 595  0.2-  0.2+    000118 402  0.3+  0.2+    000204 118  0.1+  0.6+
000106 595  0.4+  0.4+    000118 402  0.3+  0.3+    000228 693  0.2+  0.3+
000106 113  0.4+  0.5-    000118 402  1.9+  0.3-    000228 693  0.4+  0.4+
000106 113  0.5+  0.8-    000124 658  0.3-  0.1+    000228 693  0.1+  0.4+
000106 113  0.5+  0.0     000124 658  0.1+  0.1-    031029 568  0.1-  0.3+
000106 118  0.0   0.4+    000124 658  0.1+  0.0     031030 568  0.0   0.0
000106 118  0.3+  0.3+    000124 540 (0.8+  2.9-)   031030 568  0.0   0.0
000106 118  0.0   0.5+    000124 540 (0.3-  2.2-)

Ephemeris:
2000 AC6                 a,e,i = 0.85, 0.29, 5                   q = 0.6089
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2004 01 26    14 11.80   -01 22.3    0.270    1.039    94.0    71.0    21.3
2004 02 05    15 14.55   -02 35.3    0.233    1.007    88.6    78.1    21.2
2004 02 15    16 33.69   -03 44.2    0.211    0.969    78.9    88.8    21.3
2004 02 25    18 03.00   -04 33.6    0.212    0.925    66.3   101.6    21.8

Gareth V. Williams           (C) Copyright 2004 MPC           M.P.E.C. 2004-B61

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