Last updated 2018 Aug. 23

+ Orbit O-C

64P/Swift-Gehrels
From 289 observations 1991 Jan. 13-2018 Aug. 11, mean residual 0".63.
  Nongravitational parameters A1 = -0.09, A2 = +0.0494.

  Epoch  = 2018 Nov. 18.0 TT             JDT = 2458440.5
      T  = 2018 Nov. 3.8945947461 TT     +/- 0.0003065153      -0.0000000000
   Peri. =  97.1512264819                +/- 0.0001517830      -0.0000000000
   Node  = 299.9974094600 (2000.0)       +/- 0.0000669087       0.0000000000
   Incl. =   8.9486803475                +/- 0.0000242302      -0.0000000000
      q  =   1.3931892174 AU             +/- 0.0000009537       0.0000000000
      e  =   0.6874961848                +/- 0.0000002255      -0.0000000000
     A1  =  -0.0863485059                +/- 0.0110066880      -0.0000000016
     A2  =   0.0494408757                +/- 0.0001019055      -0.0000000000
      a  =   4.4581510672 AU             +/- 0.0000009946
      n  =   0.1047060805                +/- 0.0000000350
      P  =   9.4130891337 years          +/- 0.0000031499

  64P             Swift-Gehrels              *18431008.85420  1.3753186 0.6873498  66.81584 335.24584  10.48569 18431007   58 18891030 19910402  9.0 15.0 h3E2 1.0  x 2  +0.56 +0.0221         Kinoshita  P    9.23   4.3989045                 
  64P             Swift-Gehrels              *18530110.10281  1.3846745 0.6864481  67.01029 335.10574  10.46554 18530127   58 18891030 19910402  9.0 15.0 h3E2 1.0  x 2  +0.56 +0.0221         Kinoshita  P    9.28   4.4160931                 
  64P             Swift-Gehrels              *18620422.07827  1.3841325 0.6863939  67.12688 334.90019  10.45826 18620410   58 18891030 19910402  9.0 15.0 h3E2 1.0  x 2  +0.56 +0.0221         Kinoshita  P    9.27   4.4136025                 
  64P             Swift-Gehrels              *18710801.71729  1.3804226 0.6865726  68.05587 334.19194  10.39976 18710801   58 18891030 19910402  9.0 15.0 h3E2 1.0  x 2  +0.56 +0.0221         Kinoshita  P    9.24   4.4042816                 
  64P             Swift-Gehrels              *18800917.66343  1.3657242 0.6888333  68.46458 332.81431  10.26837 18800902   58 18891030 19910402  9.0 15.0 h3E2 1.0  x 2  +0.56 +0.0221         Kinoshita  P    9.20   4.3890436                 
  64P/1889 W1     Swift-Gehrels               18891130.10991  1.3577229 0.6896553  69.80452 331.88208  10.30529 18891114   58 18891030 19910402  9.0 15.0 h3E2 1.0  1 2  +0.56 +0.0221         Kinoshita  P    9.15   4.3748873                 
  64P             Swift-Gehrels              *18990201.94860  1.3587989 0.6900508  70.30792 331.35233  10.26748 18990126   58 18891030 19910402  9.0 15.0 h3E2 1.0  x 2  +0.56 +0.0221         Kinoshita  P    9.18   4.3839412                 
  64P             Swift-Gehrels              *19080330.37893  1.3483901 0.6912244  70.41456 331.21670  10.27501 19080409   58 18891030 19910402  9.0 15.0 h3E2 1.0  x 2  +0.56 +0.0221         Kinoshita  P    9.13   4.3668931                 
    Jupiter  0.7108     19100124.3
  64P             Swift-Gehrels              *19170509.01198  1.3338969 0.6945166  76.92697 324.08173   8.96522 19170512   58 18891030 19910402  9.0 15.0 h3E2 1.0  x 2  +0.56 +0.0221         Kinoshita  P    9.12   4.3665121                 
  64P             Swift-Gehrels              *19260609.68891  1.3578121 0.6914294  82.04038 317.71322   9.30451 19260614   58 18891030 19910402  9.0 15.0 h3E2 1.0  x 2  +0.56 +0.0221         Kinoshita  P    9.23   4.4003285                 
  64P             Swift-Gehrels              *19350913.71572  1.3687305 0.6902663  82.18352 317.57706   9.28957 19350826   58 18891030 19910402  9.0 15.0 h3E2 1.0  x 2  +0.56 +0.0221         Kinoshita  P    9.29   4.4190557                 
  64P             Swift-Gehrels              *19441224.85503  1.3647358 0.6907046  82.35201 317.33580   9.29054 19441216   58 18891030 19910402  9.0 15.0 h3E2 1.0  x 2  +0.56 +0.0221         Kinoshita  P    9.27   4.4124019                 
  64P             Swift-Gehrels              *19540403.48973  1.3615150 0.6910205  82.85549 317.05407   9.26418 19540408   58 18891030 19910402  9.0 15.0 h3E2 1.0  x 2  +0.56 +0.0221         Kinoshita  P    9.25   4.4064897                 
  64P             Swift-Gehrels              *19630531.41422  1.3579395 0.6915677  83.52816 315.47619   9.22183 19630620   58 18891030 19910402  9.0 15.0 h3E2 1.0  x 2  +0.56 +0.0221         Kinoshita  P    9.24   4.4027145                 
  64P/1973 C1     Swift-Gehrels               19720831.04234  1.3542383 0.6920882  84.38028 314.95575   9.26020 19720831   58 18891030 19910402  9.0 15.0 h3E2 1.0  2 2  +0.56 +0.0221         Kinoshita  P    9.22   4.3981376                 
    Earth    0.5946     19811011.8
  64P             Swift-Gehrels               19811127.45198  1.3610420 0.6913147  84.50655 314.75603   9.24910 19811112   58 18891030 19910402  9.0 15.0 h3E2 1.0  3 2  +0.56 +0.0221         Kinoshita  P    9.26   4.4091575                 
  64P             Swift-Gehrels               19910222.73001  1.3550931 0.6916160  84.82103 314.44229   9.25486 19910305  200 19810731 20100504  9.0 15.0 h3E2 0.7  4 2  +0.28 +0.0390         Kinoshita  P    9.21   4.3941746                 
    Jupiter  0.8296     19921228.0
  64P             Swift-Gehrels               20000421.81845  1.3388229 0.6946242  92.41401 306.14125   8.43769 20000406  200 19810731 20100504  9.0 15.0 h3E2 0.7  5 2  +0.28 +0.0390         Kinoshita  P    9.18   4.3841809                 
  64P             Swift-Gehrels               20090614.35187  1.3769795 0.6895621  96.30246 300.74397   8.95144 20090618  289 19910113 20180811  9.0 15.0 h3E3 0.6  6 2  -0.09 +0.0494         Kinoshita  P    9.34   4.4356042                 
    Earth    0.4448     20181027.9
  64P             Swift-Gehrels               20181103.89459  1.3931892 0.6874962  97.15123 299.99741   8.94868 20181118  289 19910113 20180811  7.0 40.0 h3E3 0.6  7 2  -0.09 +0.0494         Kinoshita  P    9.41   4.4581511                 
  64P             Swift-Gehrels              *20280331.46015  1.3899998 0.6878567  97.29549 299.76314   8.95320 20280419  289 19910113 20180811  7.0 40.0 h3E3 0.6  x 2  -0.09 +0.0494         Kinoshita  P    9.40   4.4530829                 
  64P             Swift-Gehrels              *20370820.17401  1.3838719 0.6883764  97.66372 299.53612   8.95512 20370810  289 19910113 20180811  7.0 40.0 h3E3 0.6  x 2  -0.09 +0.0494         Kinoshita  P    9.36   4.4408447                 
    Earth    0.5264     20461018.0
  64P             Swift-Gehrels              *20461118.41932  1.3654146 0.6910594  99.75530 296.54974   8.93606 20461201  289 19910113 20180811  7.0 40.0 h3E3 0.6  x 2  -0.09 +0.0494         Kinoshita  P    9.29   4.4196672                 
  64P             Swift-Gehrels              *20560229.91610  1.3330932 0.6944969 102.91082 294.28477   9.32276 20560212  289 19910113 20180811  7.0 40.0 h3E3 0.6  x 2  -0.09 +0.0494         Kinoshita  P    9.12   4.3635990                 
  64P             Swift-Gehrels              *20650422.91890  1.3426234 0.6933788 103.07102 294.10106   9.31403 20650425  289 19910113 20180811  7.0 40.0 h3E3 0.6  x 2  -0.09 +0.0494         Kinoshita  P    9.16   4.3787686                 
  64P             Swift-Gehrels              *20740613.00905  1.3291456 0.6952341 103.43379 293.70322   9.33764 20740528  289 19910113 20180811  7.0 40.0 h3E3 0.6  x 2  -0.09 +0.0494         Kinoshita  P    9.11   4.3612023                 
  64P             Swift-Gehrels              *20830902.05353  1.3525474 0.6926869 109.19808 288.45378   9.06901 20830918  289 19910113 20180811  7.0 40.0 h3E3 0.6  x 2  -0.09 +0.0494         Kinoshita  P    9.23   4.4012024                 
    Earth    0.4475     20921027.3
  64P             Swift-Gehrels              *20921107.42399  1.3768511 0.6897222 109.91593 286.53413   9.28279 20921020  289 19910113 20180811  7.0 40.0 h3E3 0.6  x 2  -0.09 +0.0494         Kinoshita  P    9.35   4.4374788                 
  64P             Swift-Gehrels              *21020325.80801  1.3844200 0.6890655 110.11939 286.41176   9.28368 21020323  289 19910113 20180811  7.0 40.0 h3E3 0.6  x 2  -0.09 +0.0494         Kinoshita  P    9.40   4.4524496                 
		
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