October 08, 2003 09:42 UT

Comet  P/1978 C2 = 2003 T1 (Tritton)
                    ***  Comet 157P/Tritton 

   The following improved orbital elements by Kenji Muraoka, are 
  from 22 observations 1978 Feb. 11 to 2003 Oct. 7 perturbations  
  by 9 Plantes, Moon and 5 minor planets were taken into account. 
   The mean residual is +/- 0.89 arc seconds.

      Epoch  =  2003 Oct.   8.0  TT      JDT = 2452920.5
          T  =  2003 Sept. 24.31039      +/- 0.00560 (m.e.) TT
       Peri. =  147.42394                +/- 0.00214
       Node  =  300.72923                +/- 0.00062   (2000.0)
       Incl. =    7.11547                +/- 0.00014
          q  =    1.4210575              +/- 0.0000199 AU
          e  =    0.5898398              +/- 0.0000057
          a  =    3.4646406              +/- 0.0000198 AU
          n�K =    0.15283288             +/- 0.00000131
          P  =    6.449                  +/- 0.0000552  years

     (    T  =  1997 Apr.  7.74885  TT    Epoch  =  1997 Apr. 22.0  TT
       Peri. =  147.28185                     e  =    0.5886594
       Node  =  300.83203    (2000.0)         a  =    3.4708826 AU
       Incl. =    7.10241                     n�K =    0.152420781
          q  =    1.4277151 AU                P  =    6.466 years      )

     (    T  =  1990 Oct. 20.91521  TT    Epoch  =  1990 Nov.  5.0  TT
       Peri. =  147.33791                     e  =    0.5878304
       Node  =  300.84106    (2000.0)         a  =    3.4750636 AU
       Incl. =    7.09430                     n�K =    0.152145791
          q  =    1.4323155 AU                P  =    6.478 years      )

     (    T  =  1984 Apr. 24.30064  TT    Epoch  =  1984 Apr. 10.0  TT
       Peri. =  147.19741                     e  =    0.5861376
       Node  =  300.94604    (2000.0)         a  =    3.4834576 AU
       Incl. =    7.07295                     n�K =    0.151596188
          q  =    1.4416721 AU                P  =    6.502 years      )

          T  =  1977 Oct. 28.45270  TT    Epoch  =  1977 Oct. 24.0  TT
       Peri. =  147.28852                     e  =    0.5873624
       Node  =  300.91547    (2000.0)         a  =    3.4791971 AU
       Incl. =    7.08097                     n�K =    0.151874733
          q  =    1.4356474 AU                P  =    6.490 years

Residuals in seconds of arc
780211 413  0.9-  0.9+   030922 678  1.4-  0.7+   031007 649  1.2-  0.7+ 
780213 413  1.1+  0.7-   030922 678  1.5+  0.7-   031007 649  1.2-  0.6+ 
780215 413 (6.1+  2.4-)  031006 678 (3.2-  1.2+)  031007 850  1.6-  0.4+ 
780310 801  1.5+  0.1+   031006 678 (2.5-  2.8+)  031007 673  0.9+  0.4- 
780311 801  0.1-  0.3-   031007 620  0.3-  0.3+   031007 673  1.8+  0.5- 
780313 801  1.7-  0.6+   031007 620  0.4-  0.4+   031007 673  1.0+  0.6- 
780314 801  0.0   0.5-   031007 620  0.5-  0.3+   031007 673  1.3+  0.4- 
030922 678 (4.9+  2.4+)  031007 620  0.5-  0.2+   031007 673  1.0+  0.9- 
030922 678 (1.4-  5.0+)  031007 649  1.2-  0.7+   031007 673  1.0+  1.0- 
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