C/1998 P1 (Williams)
Epoch 1998 Nov. 3.0 TT = JDT 2451120.5
T 1998 Oct. 17.84583 TT Nakano
q 1.1462020 (2000.0) P Q
z +0.0010958 Peri. 294.46737 -0.68092619 -0.69670268
+/-0.0000088 Node 156.37093 -0.27604233 +0.52963182
e 0.9987440 Incl. 145.72757 -0.67833631 +0.48383419
From 388 observations 1998 Aug. 11-1999 May 15, mean residual 0".71.
Nongravitational parameters A1 = +31.44 +/- 0.27, A2 = +2.2920 +/- 0.1052,
A3 = -1.03 +/- 0.04.
Residuals in seconds of arc
1998/ 981123 897 (3.0- 0.9+) 990207 352 0.5- 1.4-
980811 422 0.2- 0.3- 981123 897 (3.0- 1.1+) 990208 900 0.0 0.7+
980811 422 0.4- 0.6- 981124 355 (3.0- 0.9+) 990208 900 0.0 0.4+
980811 422 0.5- 0.5- 981124 355 (3.0- 1.0+) 990208 352 0.1- 1.7-
980811 422 0.4- 0.4- 981124 355 (3.1- 1.2+) 990208 352 0.0 0.9-
980811 430 0.4- 0.3- 981128 900 (4.3- 1.3+) 990208 402 0.4+ 0.5+
980811 430 0.0 0.2+ 981128 900 (5.0- 1.5+) 990208 402 0.3+ 0.4+
980811 430 0.0 0.1- 981128 360 (3.3- 0.8+) 990208 402 0.3+ 0.6+
980811 430 0.1+ 0.7- 981128 360 (3.2- 0.8+) 990208 160 0.5+ 0.5+
980811 430 0.0 0.0 981128 372 (4.1- 1.3+) 990209 118 0.4+ 0.9+
980811 430 0.3- 0.1+ 981203 758 (7.3- 0.6+) 990209 118 0.5+ 0.8+
980811 422 0.3+ 0.4- 981203 758 (6.2- 0.8+) 990209 750 0.6+ 0.7+
980811 422 0.3+ 0.3- 981203 758 (5.3- 0.6+) 990209 750 0.1+ 0.0
980811 422 0.3+ 0.2- 981204 758 (5.7- 0.9+) 990209 750 0.0 0.2+
980811 422 0.5+ 0.1- 981204 758 (6.2- 0.6+) 990209 750 0.2+ 0.6+
980811 422 0.4+ 0.1- 981204 758 (6.5- 0.7+) 990209 355 0.3+ 0.3+
980812 844 1.0- 0.1- 981212 351 0.7- 1.1+ 990209 355 0.5+ 0.3+
980812 844 1.3- 0.4- 981212 351 (2.7- 1.3+) 990209 355 0.6+ 0.4+
980812 844 0.9- 0.3- 981212 351 1.1- 0.9+ 990209 372 0.2- 1.0+
980812 844 1.8- 0.0 981216 372 1.7- 0.8+ 990211 372 0.9+ 1.1+
980812 844 (2.1- 0.2+) 981216 360 1.5- 0.4+ 990212 605 (3.1+ 0.7-)
980812 430 0.5- 0.4+ 981216 360 1.1- 0.3+ 990212 605 (0.4+ 2.9-)
980812 430 0.3- 0.4+ 981217 897 (2.2- 0.3+) 990213 750 0.1- 0.8+
980812 426 0.0 0.2- 981217 897 (2.2- 0.2+) 990213 750 0.2- 1.0+
980812 426 0.1- 0.2- 981218 402 1.6- 0.2+ 990213 372 1.4- 1.3+
980812 426 0.0 0.2- 981218 402 1.5- 0.0 990213 871 0.1- 1.3-
980812 426 0.1+ 0.3- 981218 402 1.5- 0.0 990213 871 0.1- 1.5-
980812 430 0.2- 0.1+ 981219 372 0.6- 0.2+ 990216 071 0.7- 0.7+
980812 430 0.0 0.5+ 981219 355 (2.7- 0.8+) 990216 071 0.1+ 0.7-
980812 426 0.3- 0.1+ 981219 355 (2.7- 0.9+) 990216 071 0.1- 0.1+
980812 422 0.3- 0.1- 981219 355 (2.7- 0.7+) 990216 071 1.0+ 0.2+
980812 422 0.2- 0.2- 981222 900 1.1- 0.0 990216 071 1.2- 0.9+
980812 422 0.7- 0.3- 981222 900 1.4- 0.1+ 990217 372 1.4+ 0.3-
980812 422 0.0 0.2- 981224 360 0.1- 0.4+ 990217 360 0.6- 0.3+
980812 422 0.3- 0.2- 981224 360 0.1- 0.4+ 990217 360 0.5- 0.3+
980812 844 0.2+ 1.1- 981224 897 0.7- 0.1- 990217 071 1.1- 0.2+
980812 844 0.9- 1.4- 981224 897 0.3- 0.2+ 990217 071 0.2- 1.0-
980813 426 0.1- 0.0 981227 402 0.3- 0.3+ 990217 071 0.8+ 0.5-
980813 426 0.0 0.1- 981227 402 0.2- 0.3+ 990217 071 1.4- 1.4+
980813 426 0.2- 0.2- 981227 402 0.3- 0.3+ 990217 071 0.6+ 0.3+
980813 426 0.2- 0.2+ 981227 372 0.9- 0.4+ 990218 750 0.3- 0.8+
980813 426 0.1- 0.0 981229 372 0.7- 0.7+ 990218 750 0.4- 1.0+
980813 422 0.2+ 0.1- 981230 758 (5.5- 1.1+) 990218 143 (0.1- 3.4-)
980813 422 0.1+ 0.2- 981230 758 (7.9- 0.5+) 990218 143 1.2+ 1.0-
980813 422 0.1+ 0.2- 981230 758 (8.1- 0.3+) 990218 143 (0.8+ 2.8-)
980813 422 0.1- 0.1- 981231 613 0.7- 0.1- 990219 750 1.3- 0.3-
980814 422 0.1- 0.2+ 981231 613 0.3- 0.7+ 990219 750 1.2- 1.1+
980814 422 0.1- 0.2+ 1999/ 990219 372 0.6- 0.4+
980814 422 0.1- 0.3+ 990101 351 0.7- 0.3- 990219 871 0.1+ 0.0
980814 426 0.0 0.0 990101 351 1.0- 0.2+ 990219 871 0.9- 1.6-
980814 426 0.5+ 0.1+ 990101 351 0.9- 0.0 990220 355 0.4- 0.2+
980814 426 0.0 0.0 990101 351 0.5- 1.4- 990220 355 0.3- 0.2+
980814 834 0.2+ 0.4- 990102 355 0.4- 0.5+ 990220 355 0.5- 0.3+
980815 834 1.5- 0.5+ 990102 355 1.0- 0.2- 990221 372 (0.9- 2.1+)
980815 834 0.4+ 0.1- 990102 355 0.8- 0.3+ 990221 897 0.2- 1.4+
980815 834 1.3- 1.4+ 990105 900 0.6- 0.4- 990221 897 0.1+ 1.5+
980815 834 0.1+ 1.0- 990105 900 0.1- 0.5- 990221 897 0.0 1.3+
980816 834 0.6+ 0.1- 990109 372 0.1- 1.0- 990222 372 0.8- 1.3+
980816 844 0.0 0.2- 990110 372 0.2- 0.5+ 990224 372 (3.7- 1.0+)
980816 844 0.4+ 1.0+ 990111 720 0.3+ 0.6+ 990225 118 1.0- 0.9+
980816 844 0.7+ 1.1+ 990111 720 0.0 0.9+ 990225 118 1.1- 0.6+
980816 426 0.5- 0.2- 990111 720 0.8+ 0.7+ 990225 351 0.0 0.7+
980816 426 0.6- 0.2- 990111 720 0.2+ 0.8+ 990225 355 0.3- 0.5-
980816 426 0.6- 0.1- 990111 720 0.3+ 0.5+ 990225 355 0.5- 0.2-
980816 426 0.5- 0.0 990111 720 0.5+ 0.6+ 990225 351 0.5- 0.5-
980817 844 (2.5+ 3.1-) 990111 720 0.4+ 0.8+ 990225 355 0.3- 0.3+
980817 844 0.0 0.1+ 990111 720 0.6+ 0.5+ 990225 351 0.2- 1.1-
980817 422 0.4- 0.3- 990111 720 0.5+ 0.3+ 990225 402 0.7- 0.5+
980817 422 0.4- 0.2- 990111 720 0.5+ 0.4+ 990225 402 0.8- 0.4+
980817 834 0.7+ 0.6+ 990111 720 0.8+ 0.4+ 990225 402 0.6- 0.3+
980818 844 0.6- 0.1+ 990111 720 0.7+ 0.2+ 990226 504 0.3- 0.1+
980818 844 (2.9+ 1.0+) 990113 372 0.7+ 0.1+ 990226 504 0.0 0.4-
980818 844 1.7+ 0.9- 990114 120 1.2+ 1.0- 990226 504 0.2+ 0.8-
980818 844 (2.4+ 0.2-) 990114 120 0.8+ 0.8- 990226 504 0.5- 0.2-
980818 844 0.4- 1.7+ 990114 120 0.8+ 0.4- 990226 504 0.5+ 0.3+
980819 834 0.7+ 0.2- 990114 120 1.1+ 0.7- 990226 504 0.8- 0.1-
980819 844 0.3- 0.6+ 990114 120 0.5+ 0.5- 990226 587 0.4- 0.3+
980819 844 0.5+ 0.7+ 990114 120 0.3- 0.9- 990226 587 0.4- 0.4+
980819 834 0.3+ 0.6+ 990114 120 0.1- 0.5- 990227 758 0.9+ 0.3-
980821 860 0.2+ 0.3+ 990114 120 0.3- 0.5- 990227 758 1.2+ 1.3-
980821 860 1.3+ 0.7- 990115 120 (2.9+ 1.1-) 990228 739 0.8- 0.7+
980821 860 1.0+ 0.5- 990115 120 (2.7+ 1.2-) 990228 900 1.7- 0.3-
980821 860 1.6+ 0.2- 990115 120 1.2+ 0.6- 990228 900 1.5- 0.2+
980821 844 1.0- 1.0+ 990115 120 1.3+ 0.1- 990302 739 0.4- 0.6-
980822 844 (2.0- 1.8+) 990115 896 1.7+ 0.1+ 990302 739 1.2- 0.8+
980822 844 0.8- 0.9+ 990115 896 0.9+ 0.7+ 990303 402 0.9- 0.3+
980823 415 (0.7+ 2.1-) 990115 896 0.8+ 0.8- 990303 402 0.9- 0.0
980824 844 0.7+ 0.5+ 990115 057 1.2- 0.2- 990303 402 0.8- 0.0
980824 844 0.0 0.4+ 990115 057 0.7- 0.5- 990303 903 0.5- 0.2-
980824 834 0.4+ 0.1+ 990115 057 1.8- 0.3+ 990303 903 0.0 1.2-
980825 844 0.3+ 1.0- 990115 057 0.2+ 0.2+ 990304 739 1.7- 0.1-
980825 430 0.6+ 0.4+ 990115 057 (3.5- 0.1+) 990306 046 0.6- 0.9+
980825 430 0.4+ 0.0 990115 057 1.5+ 1.5- 990306 046 0.6- 1.1+
980825 430 0.6+ 0.1+ 990115 057 1.6- 1.5+ 990306 046 0.7- 0.9+
980825 430 0.7+ 0.2+ 990115 057 0.4- 1.0+ 990308 118 0.1+ 0.0
980825 430 0.6+ 0.1+ 990115 057 1.1- 1.1+ 990308 118 0.5- 0.6+
980825 422 0.3+ 0.3+ 990115 057 (2.2- 1.0-) 990312 113 1.8+ 0.8-
980825 422 0.4+ 0.3+ 990115 057 0.1+ 0.3- 990313 113 (7.8- 2.3+)
980825 422 0.6+ 0.4+ 990115 057 1.8- 0.3+ 990313 840 0.1+ 0.7+
980825 430 0.8+ 0.1+ 990115 057 0.6- 0.4+ 990313 840 (0.8- 2.0+)
980825 834 0.7+ 0.8+ 990115 057 1.1- 1.2+ 990315 372 0.1+ 1.1+
980826 844 0.7+ 0.2+ 990115 057 (2.2- 0.4+) 990316 402 0.2+ 0.0
980826 844 0.8+ 0.0 990116 720 0.5- 0.0 990316 402 0.3- 0.0
980826 844 0.3- 0.6+ 990116 720 0.4+ 1.0+ 990316 402 0.4- 0.2+
980826 834 0.3- 0.1- 990117 402 1.0+ 0.4- 990316 351 (1.4- 3.3+)
980827 834 0.3- 0.4- 990117 402 0.9+ 0.1- 990316 351 (1.0+ 2.9-)
980827 834 0.5- 0.2+ 990117 402 1.3+ 0.4- 990316 372 1.2- 0.3+
980828 844 0.4+ 0.2- 990117 057 0.1+ 0.7- 990317 113 1.0+ 0.4-
980828 844 0.0 0.9+ 990117 057 0.1- 0.3- 990317 113 0.2+ 0.1-
980828 844 1.2- 1.5+ 990117 057 0.3- 0.5- 990317 113 0.3+ 0.2-
980828 426 0.1+ 0.0 990117 057 0.8- 0.9- 990320 840 (3.3+ 0.9-)
980828 426 0.1+ 0.1+ 990117 057 0.2+ 1.1- 990320 840 (3.4+ 0.6-)
980828 426 0.1+ 0.1+ 990117 057 (2.2- 1.0-) 990320 504 0.4+ 0.5-
980830 844 0.4- 0.2+ 990117 057 1.0- 0.3- 990320 504 0.5+ 0.5-
980830 844 0.9- 0.0 990117 057 1.0+ 0.1- 990320 504 0.2+ 0.6-
980830 844 0.9- 0.4- 990119 372 0.9+ 1.0- 990320 504 0.7+ 0.7-
980831 834 0.1- 0.4+ 990121 611 0.7+ 1.0- 990322 750 1.2+ 1.6-
980901 860 1.6+ 0.6- 990121 611 0.1- 0.4- 990322 750 0.7- 0.2-
980901 860 (2.6+ 0.7-) 990121 113 0.3- 0.8- 990322 750 0.7+ 0.5-
980901 860 (2.0+ 0.6-) 990121 113 0.4- 1.2- 990322 372 1.2- 0.1-
980904 834 1.6+ 0.1- 990121 113 0.6+ 0.3- 990322 897 0.1+ 0.3-
980905 834 0.6+ 1.8- 990121 113 0.7+ 0.3- 990322 897 0.6- 0.1-
980907 834 0.1- 0.7+ 990121 372 1.3+ 0.2- 990327 750 0.9+ 0.2+
980910 844 1.3+ 1.0- 990121 360 1.7+ 0.1- 990327 750 1.5+ 0.0
980910 844 0.9+ 0.3- 990121 360 1.8+ 0.1- 990327 046 0.1+ 0.6+
980910 844 1.3+ 0.3+ 990122 046 (2.2+ 0.2-) 990327 046 0.6+ 0.7+
980913 834 0.9+ 1.3- 990122 046 (2.4+ 0.6-) 990327 046 0.4+ 0.7+
980913 844 0.1+ 0.6- 990122 046 (2.3+ 0.1-) 990330 504 0.9+ 0.4+
980913 844 0.8+ 0.5- 990122 355 0.7+ 0.1- 990330 504 1.1+ 0.8+
980914 844 0.4+ 0.3- 990122 355 0.5+ 0.4- 990331 402 0.8+ 1.2-
980918 422 1.2+ 1.0- 990122 355 0.7+ 0.3- 990331 402 1.8+ 0.9-
980918 422 1.2+ 0.8- 990122 900 0.6+ 0.1- 990331 402 0.0 0.8+
980918 422 1.0+ 0.7- 990122 900 1.1+ 0.6- 990404 351 (6.4+ 1.0-)
980924 834 0.8+ 1.9- 990122 351 0.3+ 0.3+ 990404 351 (4.5+ 2.2-)
981114 402 1.7- 1.2+ 990122 351 0.2+ 0.6- 990404 402 0.8+ 0.8-
981114 402 1.4- 1.9+ 990122 351 0.4- 0.6+ 990404 402 1.3+ 1.2-
981114 402 (3.0- 2.6+) 990125 372 0.4+ 0.2- 990404 402 0.9+ 1.0-
981114 372 (3.6- 2.4+) 990126 367 0.3- 0.6+ 990407 360 0.3+ 0.8-
981114 372 (4.4- 3.1+) 990126 367 0.5- 0.8+ 990407 360 0.4+ 0.0
981115 372 (4.3- 3.1+) 990126 367 0.3- 0.5+ 990407 372 1.3+ 0.5+
981115 372 (4.0- 3.0+) 990126 372 0.8+ 0.5- 990407 897 (2.1+ 0.1+)
981119 897 0.4- 1.4+ 990128 355 0.2+ 0.1- 990407 897 (2.8+ 0.9-)
981119 897 (3.1- 0.8+) 990128 355 0.4+ 0.2- 990408 372 0.1+ 0.6+
981119 897 (3.8- 0.5+) 990128 355 0.2+ 0.2- 990409 402 (2.6+ 0.5-)
981119 897 (2.9- 1.0+) 990129 897 0.3- 0.3- 990409 402 0.9+ 0.2-
981119 351 (3.6- 0.4+) 990129 897 0.9+ 0.3- 990409 402 1.9+ 0.9-
981119 351 (3.6- 1.1+) 990129 605 0.2+ 0.8- 990409 118 0.5+ 0.1-
981119 351 (4.0- 0.3+) 990129 605 0.3- 1.6- 990409 118 1.8+ 0.1-
981122 860 (2.3- 0.8+) 990129 605 1.2- 1.7- 990412 693 0.0 0.2+
981122 860 (2.1- 0.4+) 990205 372 0.2+ 0.4+ 990412 693 0.4+ 0.3+
981122 351 (3.0- 0.7+) 990205 355 0.3+ 0.7- 990412 693 0.3+ 0.5+
981122 351 (3.2- 1.1+) 990205 355 0.6+ 0.5- 990414 360 0.6+ 0.7-
981122 900 (3.1- 0.9+) 990205 355 0.3+ 0.7- 990414 360 0.7+ 0.1+
981122 351 (2.4- 0.6-) 990206 351 0.8- 0.0 990515 693 0.1- 0.2+
981122 351 (3.0- 1.6+) 990206 351 0.7- 0.4- 990515 693 0.1- 0.4+
981122 900 (2.2- 0.9+) 990206 351 0.6- 0.6-
981123 897 (2.9- 0.9+) 990207 352 0.2- 1.9-
NAKANO
**** Don't distribute anyone except personal use only ****
(C) Copyright 1999 OAA/ComputingSection
write mail from CFAD0::NAKANO on 1999-10-26 05:12:24(JST).
P/1998 W2 (Hergenrother)
Epoch 2005 Nov. 6.0 TT = JDT 2453680.5
T 2005 Nov. 2.23004 TT Nakano
q 1.4257693 (2000.0) P Q
n 0.14236800 Peri. 13.88019 +0.98256939 -0.18449944
a 3.6324067 Node 356.50288 +0.11392952 +0.69434313
e 0.6074863 Incl. 21.89380 +0.14689271 +0.69559153
P 6.92
From 65 observations 1998 Nov. 21-1999 Apr. 15, mean residual 0".70.
Residuals in seconds of arc
1998/ 981125 402 0.9- 0.9- 1999/
981121 703 0.6+ 1.3+ 981125 402 0.1+ 0.4- 990105 402 0.2- 0.0
981121 703 (3.0+ 2.1+) 981128 402 0.9+ 0.6+ 990105 402 (2.2+ 0.1+)
981122 703 (4.9+ 0.7-) 981128 402 1.3+ 0.1+ 990105 402 0.0 0.7+
981122 703 (4.8+ 0.7-) 981128 402 0.1- 0.9- 990113 360 0.2- 0.4+
981122 703 0.8+ 0.8+ 981128 426 1.9+ 1.1- 990113 360 0.7- 0.2-
981123 693 0.0 0.3+ 981128 426 1.1+ 1.0- 990113 360 0.8+ 0.4+
981123 693 0.5- 0.2+ 981128 426 0.3+ 0.1+ 990114 693 0.4- 0.2+
981123 693 0.4- 0.0 981213 693 0.9- 0.2+ 990114 693 0.6- 0.0
981123 693 0.1- 0.4+ 981213 693 1.1- 0.1- 990114 693 0.2- 0.1-
981123 691 0.9- 0.1- 981216 402 (2.4+ 1.2+) 990115 693 0.6+ 1.2-
981123 691 0.9- 0.5+ 981216 402 0.7+ 0.3- 990115 693 0.9+ 0.5-
981123 360 0.1- 0.3- 981216 402 0.5- 0.4+ 990115 693 0.6+ 0.6-
981123 360 0.3- 0.0 981216 402 0.9- 0.8- 990213 693 0.3- 1.2+
981123 360 0.5+ 0.1- 981217 402 0.8+ 0.5+ 990213 693 0.1+ 0.6+
981124 691 1.1- 0.1+ 981217 402 0.8+ 0.2- 990213 693 0.3- 0.1+
981124 691 1.4- 0.2- 981217 402 0.0 1.8- 990214 693 0.5- 0.5-
981124 691 0.8- 0.5+ 981219 691 1.4- 0.1- 990214 693 0.2- 0.4+
981124 709 0.8+ 0.2+ 981219 691 1.8- 0.6- 990214 693 0.0 0.1+
981124 709 0.1+ 0.1+ 981223 402 (2.5+ 0.2+) 990412 693 1.1- 0.3+
981124 709 0.6+ 0.2+ 981223 402 1.1+ 1.1- 990412 693 0.7- 0.1-
981124 709 0.7- 0.1- 981223 402 (2.3+ 0.6+) 990415 693 0.3+ 0.3-
981124 709 0.3+ 0.2+ 981223 402 (2.7+ 0.2-) 990415 693 0.9+ 0.1+
981124 426 0.2- 1.0+ 981223 118 1.1+ 0.5+ 990415 693 0.6+ 0.1+
981124 426 0.5- 0.2+ 981223 118 0.9+ 0.1-
981125 402 (0.0 3.2-) 981223 118 1.8+ 1.1+
NAKANO
**** Don't distribute anyone except personal use only ****
(C) Copyright 1999 OAA/ComputingSection
write mail from CFAD0::NAKANO on 1999-10-26 05:12:24(JST).
C/1998 P1 (Williams)
Epoch 1998 Nov. 3.0 TT = JDT 2451120.5
T 1998 Oct. 17.84583 TT Nakano
q 1.1462014 (2000.0) P Q
z +0.0010972 Peri. 294.46736 -0.68092606 -0.69670284
+/-0.0000089 Node 156.37093 -0.27604258 +0.52963175
e 0.9987424 Incl. 145.72757 -0.67833635 +0.48383402
From 372 observations 1998 Aug. 11-1999 Apr. 14, mean residual 0".71.
Nongravitational parameters A1 = +31.51 +/- 0.28, A2 = +2.2940 +/- 0.1068,
A3 = -1.02 +/- 0.04.
C/1998 P1 (Williams)
Epoch 1998 Nov. 3.0 TT = JDT 2451120.5
T 1998 Oct. 17.84633 TT Nakano
q 1.1462247 (2000.0) P Q
z +0.0010456 Peri. 294.46849 -0.68093685 -0.69669399
+/-0.0000090 Node 156.37135 -0.27604001 +0.52963399
e 0.9988015 Incl. 145.72783 -0.67832656 +0.48384431
From 352 observations 1998 Aug. 11-1999 Mar. 27, mean residual 0".68.
Nongravitational parameters A1 = +29.69 +/- 0.34, A2 = +2.2798 +/- 0.1048,
A3 = -0.84 +/- 0.04.
C/1998 P1 (Williams)
Epoch 1998 Nov. 3.0 TT = JDT 2451120.5
T 1998 Oct. 17.84832 TT Nakano
q 1.1463118 (2000.0) P Q
z +0.0008614 Peri. 294.47320 -0.68098260 -0.69665600
+/-0.0000088 Node 156.37301 -0.27602729 +0.52964399
e 0.9990126 Incl. 145.72883 -0.67828581 +0.48388808
From 310 observations 1998 Aug. 11-1999 Feb. 25, mean residual 0".74.
Nongravitational parameters A1 = +23.41 +/- 0.35, A2 = +1.6959 +/- 0.1149.
C/1998 P1の軌道と予報位置です
前回のEMESにあったとおり，この彗星の非重力効果（A1= +21.6）は，
これまで最大の値となります．過去最大の値を示したのは，C/1993 A1で
A1=+16.6，周期彗星では，102P/Shoemaker 1でA1=+13.3でした．
C/1998 P1 (Williams)
Epoch 1998 Nov. 3.0 TT = JDT 2451120.5
T 1998 Oct. 17.84851 TT Nakano
q 1.1463319 (2000.0) P Q
z +0.0008250 Peri. 294.47393 -0.68099157 -0.69664705
+/-0.0000080 Node 156.37298 -0.27601973 +0.52964762
e 0.9990543 Incl. 145.72879 -0.67827987 +0.48389698
From 288 observations 1998 Aug. 11-1999 Feb. 18, mean residual 0".73.
Nongravitational parameters A1 = +21.58 +/- 0.42, A2 = +1.2079 +/- 0.1079.
C/1998 P1 (Williams)
Epoch 1998 Nov. 3.0 TT = JDT 2451120.5
T 1998 Oct. 17.84931 TT Nakano
q 1.1463647 (2000.0) P Q
z +0.0007715 Peri. 294.47516 -0.68100873 -0.69662943
+/-0.0000072 Node 156.37272 -0.27600485 +0.52965612
e 0.9991156 Incl. 145.72874 -0.67826870 +0.48391304
From 242 observations 1998 Aug. 11-1999 Jan. 28, mean residual 0".68.
Nongravitational parameters A1 = +18.03 +/- 0.55, A2 = +0.6407 +/- 0.1104.
(1/a)org.= +0.000112, (1/a)fut.= +0.001276, L= 6.
C/1998 P1 (Williams)
Epoch 1998 Nov. 3.0 TT = JDT 2451120.5
T 1998 Oct. 17.85378 TT Nakano
q 1.1465710 (2000.0) P Q
z +0.0003555 Peri. 294.48446 -0.68109827 -0.69655204
+/-0.0000086 Node 156.37564 -0.27596195 +0.52967349
e 0.9995924 Incl. 145.72962 -0.67819624 +0.48400543
From 179 observations 1998 Aug. 11-1999 Jan. 2, mean residual 0".72.
C/1998 P1 (Williams)
Epoch 1998 Nov. 3.0 TT = JDT 2451120.5
T 1998 Oct. 17.85338 TT Nakano
q 1.1465779 (2000.0) P Q
z +0.0003437 Peri. 294.48439 -0.68109404 -0.69655764
+/-0.0000316 Node 156.37606 -0.27596875 +0.52966919
e 0.9996060 Incl. 145.72974 -0.67819773 +0.48400207
From 149 observations 1998 Aug. 11-Nov. 28, mean residual 0".64.
戻ります。