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  • MPEC 2003-Y68 : 1999 NA5

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    M.P.E.C. 2003-Y68                                Issued 2003 Dec. 25, 18:13 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
    
                                       1999 NA5
    
                               Revision to MPEC 1999-O03
    
    Additional Observations:
         J99N05A 1C2003 12 24.64143 06 21 38.832+21 11 04.61         20.2 R EY068413
         J99N05A 1C2003 12 24.65841 06 21 36.724+21 10 59.69         20.3 R EY068413
         J99N05A 1C2003 12 24.66727 06 21 35.620+21 10 56.87         20.2 R EY068413
         J99N05A 1C2003 12 25.53683 06 19 52.10 +21 06 51.4          20.6 R EY068413
         J99N05A 1C2003 12 25.54342 06 19 51.27 +21 06 50.0          21.1 R EY068413
    
    Observer details:
    413 Siding Spring.  Observer R. H. McNaught.  1.0-m f/8 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
    031224 413 0.06+ 0.01-    031225 413 0.06+ 0.01-    MPO 50412   -0.050 day
    
    Orbital elements:
    1999 NA5
    Epoch 2003 Dec. 27.0 TT = JDT 2453000.5                 MPC
    M 259.04687              (2000.0)            P               Q
    n   0.57297206     Peri.  318.65317     -0.75357947     +0.65319330
    a   1.4356451      Node   262.28643     -0.58183029     -0.71506944
    e   0.2481833      Incl.    4.27494     -0.30592726     -0.24902652
    P   1.72           H   20.7           G   0.15           U   3
    Residuals in seconds of arc
    990622 699  0.5+  0.0     990716 046  0.3+  0.0     990723 848  0.6-  0.5-
    990622 699  0.2+  0.8+    990716 046  0.9-  1.2-    990723 848  0.3+  0.6-
    990622 699  0.3-  1.8-    990716 046  0.5-  0.3+    990723 848  0.8+  0.0
    990713 704  0.1-  0.0     990716 046  0.1-  0.2-    990731 658  0.8+  0.3+
    990713 704  0.2-  0.2+    990716 704  0.4+  1.2+    990731 658  0.4+  0.4+
    990713 704  0.2-  0.3+    990716 704  0.5-  0.2-    990731 658  0.3+  0.1+
    990713 704  0.2+  0.3+    990716 704  0.6-  0.2-    990802 658  0.7-  0.1+
    990713 704  0.0   0.5+    990716 426  0.3+  0.2-    990802 658  0.2+  0.1-
    990714 704  0.1+  0.2+    990716 426  0.6+  0.5-    990802 658  0.1+  0.3-
    990714 704  0.4+  0.3+    990716 426  0.0   0.1-    990821 413  0.1+  0.3+
    990714 704  0.5+  0.0     990720 557  0.1+  0.2+    990821 413  0.1-  0.3+
    990714 426  0.0   0.3+    990720 557  0.1-  0.2+    031224 413  0.1-  0.0
    990714 426  0.4+  0.5+    990720 557  0.1-  0.4-    031224 413  0.0   0.0
    990714 426  0.2-  0.3+    990722 402  0.2-  0.9-    031224 413  0.0   0.2-
    990714 557  0.0   0.1-    990722 402  0.3-  0.2-    031225 413  0.0   0.3-
    990714 557  0.3-  0.2+    990722 402  0.5-  0.2-    031225 413  0.0   0.1+
    
    Ephemeris:
    1999 NA5                 a,e,i = 1.44, 0.25, 4                   q = 1.0793
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2003 12 17    06 35.88   +21 44.1    0.636    1.609   166.2     8.4    21.3
    2003 12 27    06 16.91   +20 59.6    0.597    1.580   177.5     1.6    20.8
    2004 01 06    05 56.53   +20 07.8    0.581    1.550   163.9    10.1    21.1
    2004 01 16    05 38.53   +19 14.7    0.586    1.518   149.5    19.2    21.4
    2004 01 26    05 25.87   +18 29.2    0.607    1.484   136.4    27.2    21.7
    2004 02 05    05 19.95   +17 57.4    0.640    1.450   124.8    33.9    21.9
    
    Kyle E. Smalley              (C) Copyright 2003 MPC           M.P.E.C. 2003-Y68
    

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