! titre      C/1998 P1 (Williams)                    
 ! date       25/09/98
 ! obstime      0.546999990940094     
 ! polar      D       
 ! freq          1667359030.00000     
 ! vit_debut    -8428.16113281250     
 ! delta_vit     140.469360351562     
 ! nb cycles     28.00000    
 ! ah depart            -5
 ! RA  offset   0.000000000000000E+000
 ! dec offset   0.000000000000000E+000
 ! RA            48788.1992187500     
 ! dec          -33.2408065795898     
  -8428.161      2.4463788E-03
  -8287.691      8.1258722E-02
  -8147.222     -5.6065686E-02
  -8006.753      0.1752793    
  -7866.284     -9.5097847E-02
  -7725.814     -3.2653134E-02
  -7585.345      3.7723654E-03
  -7444.876      9.5190600E-02
  -7304.407      5.7936553E-03
  -7163.938     -4.5402631E-02
  -7023.468     -4.0556785E-02
  -6882.999     -0.1147594    
  -6742.530      8.5342482E-02
  -6602.061      2.1938212E-02
  -6461.591      5.7866152E-02
  -6321.122      7.1591571E-02
  -6180.653     -4.1667972E-02
  -6040.184     -0.1276747    
  -5899.714      3.0890383E-02
  -5759.245     -4.6101451E-02
  -5618.776     -1.3149722E-02
  -5478.307     -6.2178243E-03
  -5337.837      1.5714215E-02
  -5197.368     -1.3115400E-03
  -5056.899      2.1003235E-02
  -4916.430      0.1090788    
  -4775.960      3.4905683E-02
  -4635.491     -0.1181882    
  -4495.022      1.0645122E-02
  -4354.553     -9.3997844E-02
  -4214.083      0.1023798    
  -4073.614      9.2103906E-02
  -3933.145     -0.1570903    
  -3792.676      6.0726706E-02
  -3652.207     -4.3932617E-02
  -3511.737      4.8291620E-02
  -3371.268     -4.7059748E-02
  -3230.799      7.2936453E-02
  -3090.330      0.1283434    
  -2949.860      5.1855866E-02
  -2809.391      8.5674729E-03
  -2668.922     -0.1386317    
  -2528.453      6.8614958E-03
  -2387.983      4.5038193E-02
  -2247.514      0.1375367    
  -2107.045     -0.1021602    
  -1966.576     -4.0518558E-03
  -1826.106      4.3370850E-02
  -1685.637      2.1223564E-02
  -1545.167      2.9856468E-02
  -1404.698     -6.2081512E-02
  -1264.229      4.8870597E-02
  -1123.759      6.2125507E-03
  -983.2900     -3.0989731E-02
  -842.8207     -9.0967327E-02
  -702.3513     -0.1702094    
  -561.8820      7.3981769E-02
  -421.4126      6.2256660E-02
  -280.9432      0.1462866    
  -140.4739      9.7753264E-02
 -4.5166016E-03 -7.0943780E-02
   140.4648     -0.2732486    
   280.9342     -8.3969943E-02
   421.4036     -1.5380935E-02
   561.8729     -8.2764626E-02
   702.3423      9.9947155E-02
   842.8116      9.6371025E-02
   983.2810     -0.1630220    
   1123.750      0.2526615    
   1264.220     -3.5666316E-03
   1404.689      4.2001079E-03
   1545.158     -1.7709658E-02
   1685.628     -0.1279514    
   1826.097      5.4700769E-02
   1966.567     -3.4203708E-02
   2107.036     -2.9959606E-02
   2247.505      5.0700471E-02
   2387.975     -0.1535947    
   2528.444      5.8763620E-02
   2668.913      1.6971107E-03
   2809.382     -8.1104308E-02
   2949.852     -0.1050134    
   3090.321      4.4323035E-02
   3230.790     -0.2697841    
   3371.259     -0.1358763    
   3511.729     -0.1726196    
   3652.198     -0.1195626    
   3792.667     -0.1180982    
   3933.136      6.5250821E-02
   4073.605      8.3070546E-02
   4214.075     -9.9289887E-02
   4354.544      0.1152165    
   4495.013      7.8931257E-02
   4635.482     -2.1861812E-02
   4775.952     -0.1590360    
   4916.421      5.9947457E-02
   5056.890      5.9439722E-02
   5197.359     -0.1373561    
   5337.829     -0.1871963    
   5478.298     -1.7850906E-02
   5618.767     -0.1581257    
   5759.236      7.3275968E-02
   5899.706      4.1536383E-02
   6040.175      6.5168664E-02
   6180.644      0.1559934    
   6321.113     -1.3254680E-02
   6461.583      0.1606719    
   6602.052     -0.2301280    
   6742.521      8.6562596E-02
   6882.990      0.1232272    
   7023.459     -0.2607549    
   7163.929     -3.8962431E-02
   7304.398     -2.5660370E-02
   7444.867     -7.7441081E-02
   7585.336      0.1185197    
   7725.806      0.1716092    
   7866.275      0.2353508    
   8006.744     -9.3687482E-02
   8147.213      5.1182996E-02
   8287.683     -0.1627434