OAA computing section circular                        NK 569 



           07S1-0180Periodic Comet de Vico-Swift07S1-0120




     The following improved orbital elements,06F1-001 by S. Nakano,06F1-000 are
from  18 observations  1894 - 1965.  Perturbations  by all nine
planets  and  five minor planets  were taken into account.  The
mean residual is +/- 2.02 arc seconds.


06F1-001     Epoch =06F1-000  1965 Aug. 28.006F1-001 TT06F1-000
06F1-001     T     =06F1-000  1965 Aug. 23.27487  +/- 0.0010306F1-001 (m.e.) TT 06F1-000
06F1-001     Peri. =06F1-000  325.42636           +/- 0.00246
06F1-001     Node  =06F1-000   25.06885           +/- 0.0021006F1-001   (2000.0)   06F1-000
06F1-001     Inc.  =06F1-000    3.61282           +/- 0.00026
06F1-001        q  =06F1-000    1.6244459         +/- 0.000013906F1-001 AU06F1-000
06F1-001        e  =06F1-000    0.5244330         +/- 0.0000035
06F1-001        a  =06F1-000    3.4158088         +/- 0.000006606F1-001 AU06F1-000
06F1-001        nß =06F1-000    0.15612187        +/- 0.00000045
06F1-001        P  =06F1-000    6.313             +/- 0.000018306F1-001 years06F1-000


06F1-001T     =06F1-000 1894 Oct. 12.6264606F1-001 TT  06F1-00006F1-001     Epoch =06F1-000  1894 Oct. 19.006F1-001 TT06F1-000
06F1-001Peri. =06F1-000 296.77988               06F1-001        e =06F1-000    0.5719215
06F1-001Node  =06F1-000  49.9680506F1-001    (2000.0)           a =06F1-000    3.250801506F1-001 AU06F1-000
06F1-001Inc.  =06F1-000   2.97495                       06F1-001nß=06F1-000    0.16815833
06F1-001    q =06F1-000   1.391598306F1-001 AU                  P =06F1-000    5.86106F1-001 years06F1-000


06F1-001(T    =06F1-000 1901 Feb. 15.9792406F1-001 TT  06F1-00006F1-001     Epoch =06F1-000  1901 Feb. 25.006F1-001 TT06F1-000
06F1-001Peri. =06F1-000 324.10741               06F1-001        e =06F1-000    0.5157855
06F1-001Node  =06F1-000  26.1662006F1-001    (2000.0)           a =06F1-000    3.447953306F1-001 AU06F1-000
06F1-001Inc.  =06F1-000   3.59250                       06F1-001nß=06F1-000    0.15394373
06F1-001    q =06F1-000   1.669548906F1-001 AU                  P =06F1-000    6.40206F1-001 years )06F1-000

06F1-001(T    =06F1-000 1907 July 18.5303406F1-001 TT  06F1-00006F1-001     Epoch =06F1-000  1907 July  4.006F1-001 TT06F1-000
06F1-001Peri. =06F1-000 324.24012               06F1-001        e =06F1-000    0.5152143
06F1-001Node  =06F1-000  26.1201006F1-001    (2000.0)           a =06F1-000    3.451802906F1-001 AU06F1-000
06F1-001Inc.  =06F1-000   3.59005                       06F1-001nß=06F1-000    0.15368627
06F1-001    q =06F1-000   1.673384706F1-001 AU                  P =06F1-000    6.41306F1-001 years )06F1-000

06F1-001(T    =06F1-000 1913 Dec. 26.1241406F1-001 TT  06F1-00006F1-001     Epoch =06F1-000  1913 Dec. 19.006F1-001 TT06F1-000
06F1-001Peri. =06F1-000 324.33026               06F1-001        e =06F1-000    0.5092230
06F1-001Node  =06F1-000  25.9961606F1-001    (2000.0)           a =06F1-000    3.473043506F1-001 AU06F1-000
06F1-001Inc.  =06F1-000   3.57874                       06F1-001nß=06F1-000    0.15227855
06F1-001    q =06F1-000   1.704490006F1-001 AU                  P =06F1-000    6.47206F1-001 years )06F1-000

06F1-001(T    =06F1-000 1920 June 20.9677106F1-001 TT  06F1-00006F1-001     Epoch =06F1-000  1920 June  5.006F1-001 TT06F1-000
06F1-001Peri. =06F1-000 324.37640               06F1-001        e =06F1-000    0.5080036
06F1-001Node  =06F1-000  25.9772406F1-001    (2000.0)           a =06F1-000    3.480636606F1-001 AU06F1-000
06F1-001Inc.  =06F1-000   3.57495                       06F1-001nß=06F1-000    0.15178053
06F1-001    q =06F1-000   1.712460606F1-001 AU                  P =06F1-000    6.49406F1-001 years )06F1-000

06F1-001(T    =06F1-000 1926 Dec. 15.3248306F1-001 TT  06F1-00006F1-001     Epoch =06F1-000  1926 Dec. 31.006F1-001 TT06F1-000
06F1-001Peri. =06F1-000 324.24447               06F1-001        e =06F1-000    0.5077764
06F1-001Node  =06F1-000  25.9670406F1-001    (2000.0)           a =06F1-000    3.481531006F1-001 AU06F1-000
06F1-001Inc.  =06F1-000   3.57435                       06F1-001nß=06F1-000    0.15172204
06F1-001    q =06F1-000   1.713691906F1-001 AU                  P =06F1-000    6.49606F1-001 years )06F1-000


06F1-00107S1-0120                           - continued -06F1-000


06F1-00107S1-0180Periodic Comet de Vico-Swift           NK 569 - 206F1-00007S1-0120
-------------------------------------------------------------------------



06F1-001(T    =06F1-000 1933 June 14.7130306F1-001 TT  06F1-00006F1-001     Epoch =06F1-000  1933 June 17.006F1-001 TT06F1-000
06F1-001Peri. =06F1-000 324.16358               06F1-001        e =06F1-000    0.5064029
06F1-001Node  =06F1-000  25.9974306F1-001    (2000.0)           a =06F1-000    3.487197706F1-001 AU06F1-000
06F1-001Inc.  =06F1-000   3.57125                       06F1-001nß=06F1-000    0.15135237
06F1-001    q =06F1-000   1.721270806F1-001 AU                  P =06F1-000    6.51206F1-001 years )06F1-000

06F1-001(T    =06F1-000 1939 Dec. 14.9675606F1-001 TT  06F1-00006F1-001     Epoch =06F1-000  1939 Dec.  3.006F1-001 TT06F1-000
06F1-001Peri. =06F1-000 324.19132               06F1-001        e =06F1-000    0.5080126
06F1-001Node  =06F1-000  25.9567506F1-001    (2000.0)           a =06F1-000    3.481243606F1-001 AU06F1-000
06F1-001Inc.  =06F1-000   3.57531                       06F1-001nß=06F1-000    0.15174083
06F1-001    q =06F1-000   1.712727906F1-001 AU                  P =06F1-000    6.49506F1-001 years )06F1-000

06F1-001(T    =06F1-000 1946 June  6.6020806F1-001 TT  06F1-00006F1-001     Epoch =06F1-000  1946 May  20.006F1-001 TT06F1-000
06F1-001Peri. =06F1-000 324.06138               06F1-001        e =06F1-000    0.5088152
06F1-001Node  =06F1-000  25.9389406F1-001    (2000.0)           a =06F1-000    3.475873206F1-001 AU06F1-000
06F1-001Inc.  =06F1-000   3.57699                       06F1-001nß=06F1-000    0.15209264
06F1-001    q =06F1-000   1.707296006F1-001 AU                  P =06F1-000    6.48006F1-001 years )06F1-000

06F1-001(T    =06F1-000 1952 Nov. 27.9027806F1-001 TT  06F1-00006F1-001     Epoch =06F1-000  1952 Dec. 14.006F1-001 TT06F1-000
06F1-001Peri. =06F1-000 324.27279               06F1-001        e =06F1-000    0.5104679
06F1-001Node  =06F1-000  25.8486106F1-001    (2000.0)           a =06F1-000    3.469028806F1-001 AU06F1-000
06F1-001Inc.  =06F1-000   3.58100                       06F1-001nß=06F1-000    0.15254297
06F1-001    q =06F1-000   1.698201006F1-001 AU                  P =06F1-000    6.46106F1-001 years )06F1-000

06F1-001(T    =06F1-000 1959 Apr. 26.5285406F1-001 TT  06F1-00006F1-001     Epoch =06F1-000  1959 Apr. 22.006F1-001 TT06F1-000
06F1-001Peri. =06F1-000 325.25994               06F1-001        e =06F1-000    0.5237821
06F1-001Node  =06F1-000  25.1427306F1-001    (2000.0)           a =06F1-000    3.418824206F1-001 AU06F1-000
06F1-001Inc.  =06F1-000   3.61164                       06F1-001nß=06F1-000    0.15591537
06F1-001    q =06F1-000   1.628105306F1-001 AU                  P =06F1-000    6.32106F1-001 years )06F1-000



     The predicted orbit for the 1995 return is as follows:

06F1-001T     =06F1-000 1995 Apr.  9.4660206F1-001 TT  06F1-00006F1-001     Epoch =06F1-000  1995 Mar. 24.006F1-001 TT06F1-000
06F1-001Peri. =06F1-000   1.92895               06F1-001        e =06F1-000    0.4306808
06F1-001Node  =06F1-000 359.0175206F1-001    (2000.0)           a =06F1-000    3.768447406F1-001 AU06F1-000
06F1-001Inc.  =06F1-000   6.09606                       06F1-001nß=06F1-000    0.13472879
06F1-001    q =06F1-000   2.145449606F1-001 AU                  P =06F1-000    7.31506F1-001 years06F1-000



     The following residuals in seconds of arc are from the above
orbital elements:


06F1-001Date/ UT           R.A. (2000)   Decl.         *** O-C ***   Code/Obs06F1-000
06F1-001                     h  m  s       ¡  ,  "       "      "            06F1-000
1894 11 23.72891   22 30 58.68  -11 45 14.5     5.1+   0.4-   020/NI  
1894 12 02.74362   22 57 14.55  -08 37 23.1     0.6+   1.9-   546/OP  
1894 12 16.77774   23 36 22.24  -03 47 27.4     4.3-   0.5-   020/NI  
1894 12 28.82816   00 08 18.87  +00 10 50.3     1.3+   3.1-   020/NI  
1895 01 26.15822   01 18 30.63  +08 28 01.8     1.2+   6.4-   662/LI  
1895 01 30.15443   01 27 58.14  +09 29 54.5   ( 3.7-   9.0-)  662/LI  
1965 08 04.41535   00 51 24.67  +00 14 12.7     0.0    0.4-   689/FS  
1965 08 04.45877   00 51 28.00  +00 14 38.2     2.2-   0.8-   693/CT  
1965 08 04.46396   00 51 28.49  +00 14 41.3     1.2-   0.3-   689/FS  
1965 08 06.40279   00 54 08.00  +00 33 25.3     0.7-   1.0-   689/FS  

06F1-00107S1-0120                           - continued -06F1-000


06F1-00107S1-0180Periodic Comet de Vico-Swift           NK 569 - 306F1-00007S1-0120
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06F1-001Date/ UT           R.A. (2000)   Decl.         *** O-C ***   Code/Obs06F1-000
06F1-001                     h  m  s       ¡  ,  "       "      "            06F1-000
1965 08 06.42710   00 54 09.83  +00 33 39.3     1.5-   0.9-   689/FS  
1965 08 25.29046   01 14 08.17  +03 12 14.4     0.1+   1.3+   689/FS  
1965 08 25.31407   01 14 09.13  +03 12 24.8     0.2-   1.5+   689/FS  
1965 09 02.45060   01 18 52.78  +04 05 42.9     1.6+   1.4+   689/FS  
1965 09 02.47282   01 18 53.25  +04 05 50.8     1.5+   1.4+   689/FS  
1965 09 25.34490   01 19 03.76  +05 47 48.0     0.8+   1.8+   689/FS  
1965 09 25.36711   01 19 03.19  +05 47 51.9     0.9+   1.6+   689/FS  
1965 10 15.14142   01 09 28.65  +06 38 05.0     2.3-   1.3+   689/FS  
1965 10 15.16469   01 09 27.89  +06 38 08.4     2.2-   1.3+   689/FS  
                                                                      
                                          ( ) -------- Rejected Obs.


Director, Computing Section
Syuichi Nakano                                       1992 Apr. 2206F

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