OAA computing section circular NK 1309 14P/Wolf
The following improved orbital elements, by S. Nakano, are from 137 observations 1950 to 2004. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.70 arc second. See previous orbit in NK 660. Epoch = 2000 Dec. 2.0 TT T = 2000 Nov. 21.07209 +/- 0.00010 (m.e.) TT Peri. = 162.36326 +/- 0.00004 Node = 204.12091 +/- 0.00004 (2000.0) Inc. = 27.52266 +/- 0.00002 q = 2.4126309 +/- 0.0000009 AU e = 0.4071491 +/- 0.0000002 a = 4.0695407 +/- 0.0000005 AU n' = 0.12005658 +/- 0.00000002 P = 8.210 +/- 0.0000016 years T = 1950 Oct. 23.65814 TT Epoch = 1950 Oct. 6.0 TT Peri. = 161.13941 e = 0.3963713 Node = 204.58435 (2000.0) a = 4.1376284 AU Inc. = 27.31081 n'= 0.11710538 q = 2.4975914 AU P = 8.416 years T = 1959 Mar. 21.83701 TT Epoch = 1959 Mar. 13.0 TT Peri. = 161.07196 e = 0.3947518 Node = 204.60964 (2000.0) a = 4.1419486 AU Inc. = 27.29207 n'= 0.11692221 q = 2.5069069 AU P = 8.430 years T = 1967 Aug. 30.11781 TT Epoch = 1967 Aug. 18.0 TT Peri. = 161.24610 e = 0.3949122 Node = 204.50404 (2000.0) a = 4.1416369 AU Inc. = 27.30142 n'= 0.11693541 q = 2.5060541 AU P = 8.429 years T = 1976 Jan. 25.35501 TT Epoch = 1976 Jan. 23.0 TT Peri. = 161.13717 e = 0.3956846 Node = 204.51378 (2000.0) a = 4.1381925 AU Inc. = 27.32636 n'= 0.11708144 q = 2.5007736 AU P = 8.418 years T = 1984 May 31.82659 TT Epoch = 1984 May 20.0 TT Peri. = 162.17085 e = 0.4067526 Node = 204.21813 (2000.0) a = 4.0713299 AU Inc. = 27.50562 n'= 0.11997745 q = 2.4153058 AU P = 8.215 years T = 1992 Aug. 28.13307 TT Epoch = 1992 Sept.15.0 TT Peri. = 162.28581 e = 0.4055997 Node = 204.14513 (2000.0) a = 4.0842908 AU Inc. = 27.47769 n'= 0.11940681 q = 2.4277035 AU P = 8.254 years The predicted orbit for the 2009 return is as follows: T = 2009 Feb. 27.25208 TT Epoch = 2009 Feb. 18.0 TT Peri. = 158.98856 e = 0.3579549 Node = 202.11932 (2000.0) a = 4.2428780 AU Inc. = 27.94338 n'= 0.11277511 q = 2.7241189 AU P = 8.740 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1950/ 751206 693 1.7+ 0.1- 000824 867 0.3- 0.0 500618 672 1.8- 1.2- 1983/ 000824 867 0.0 0.2+ 500618 672 0.1- 0.8+ 830801 675 0.9- 1.3- 000824 867 0.1- 0.1+ 500619 672 0.8- 0.0 830803 675 0.4- 0.1+ 000826 360 0.1+ 0.2- 500619 672 1.6- 0.5+ 1984/ 000826 360 0.1- 0.0 500720 672 0.8- 0.4+ 840906 675 0.9- 0.2+ 000828 049 0.3- 1.5+ 500720 672 0.9- 0.2- 841103 675 0.2- 0.2+ 000828 049 0.6- 1.8+ 500721 672 0.9- 0.7- 841123 707 0.8- 1.6- 000828 049 0.1+ 0.5+ 500722 672 0.6- 0.3- 1992/ 000906 704 0.1+ 0.1+ 500816 672 0.8- 0.7- 920710 372 0.1- 0.3- 000906 704 0.6- 0.6+ 500816 662 0.2- 0.8+ 920725 372 (8.1- 3.7-) 000906 704 0.5- 0.7+ 500816 662 0.4- 0.4+ 920726 372 2.2- 1.1- 000906 704 0.5- 0.4+ 500817 672 0.6+ 0.8+ 920726 372 (5.4+ 0.3+) 000906 704 0.7- 0.1+ 500910 672 1.3- 0.8- 920727 658 0.8- 0.2+ 000922 704 0.3- 0.2- 500911 672 0.4+ 0.3+ 920727 658 0.7- 0.5+ 000922 704 0.2- 0.4+ 500912 672 0.3+ 0.4- 920727 658 0.6- 0.1+ 000922 704 0.2- 0.0 501010 672 0.6+ 0.3- 920925 691 0.5- 0.6+ 000922 704 0.1+ 0.1+ 501102 662 0.6+ 0.5- 920925 691 0.0 0.2+ 000922 704 0.3+ 0.8+ 501102 662 1.4+ 1.2- 920925 691 0.6- 0.4+ 000926 360 0.0 0.2- 501112 672 (2.9- 0.1+) 920927 658 0.3- 1.2- 000926 360 0.1+ 0.2- 501213 672 1.4- 0.1- 920927 658 0.4- 1.3- 000929 699 0.6+ 0.1+ 501213 672 (2.4- 0.0 ) 920927 658 1.3- 1.8- 000929 699 0.0 0.0 1958/ 921102 360 0.1- 0.3- 000929 699 1.0+ 0.4+ 580624 689 1.1+ 0.3- 921102 360 0.3+ 0.3- 000929 699 1.0+ 0.6- 580624 689 0.8+ 0.5- 921202 691 0.2- 0.3- 001004 704 0.3+ 0.2+ 580710 689 0.4+ 0.3+ 921202 691 0.4+ 0.4- 001004 704 0.4+ 0.0 580710 689 1.3+ 0.3+ 921202 691 0.4+ 0.3- 001004 704 0.1+ 0.3+ 581008 689 0.4+ 0.4- 1993/ 001119 704 0.0 0.4+ 581008 689 1.5+ 0.5+ 930125 691 1.2- 0.6- 001119 704 0.9+ 0.0 581014 689 1.0+ 0.1- 930125 691 0.9- 0.2- 001119 704 0.2+ 0.8+ 581014 689 0.2+ 0.6- 930125 691 1.6- 0.5- 001119 704 0.6+ 1.0+ 1967/ 1999/ 001119 704 0.9+ 0.8+ 670930 693 1.2+ 0.8+ 990415 693 0.5- 0.3- 001122 360 0.1+ 0.1- 671005 371 (0.3+ 2.7-) 990415 693 0.2- 0.6- 001122 360 0.1+ 0.1+ 671005 371 (3.0+ 2.1-) 990523 693 0.5- 0.1- 001125 699 0.3+ 0.3+ 671007 371 (2.5- 1.6-) 990523 693 1.0- 0.2- 001125 699 1.0+ 0.9+ 671007 371 (3.7+ 3.3+) 990523 693 0.9- 0.0 001125 699 0.7+ 0.8+ 671008 371 (1.6+ 7.0-) 990622 691 0.1- 0.0 001125 699 0.4+ 1.3+ 671104 693 1.6+ 1.1- 990622 691 0.0 0.1- 001126 704 0.5+ 0.4+ 671104 693 1.8+ 0.6- 990622 691 0.1+ 0.5- 001126 704 1.0+ 0.3+ 1975/ 990913 695 0.2+ 0.2- 001126 704 0.7+ 0.8+ 750517 801 1.6- 1.8- 990913 695 0.5- 0.6- 001126 704 0.1+ 1.0+ 750517 691 0.3- 0.2- 990913 695 0.6- 0.1+ 001222 360 0.1+ 0.4+ 750517 691 0.1+ 0.0 2000/ 001222 360 0.4+ 0.0 750611 801 0.6- 0.1- 000601 809 1.2- 0.4- 2004/ 750808 691 0.2- 1.0- 000601 809 0.3+ 0.8+ 040121 809 1.2+ 0.0 750808 691 0.1+ 1.0- 000601 809 0.2- 0.3+ 040121 809 1.1+ 0.1+ 750904 801 0.3- 0.8- 000609 561 0.2- 0.4+ 040121 809 1.3+ 0.1+ 750906 801 1.3+ 1.5+ 000609 561 0.0 0.2- 040122 809 0.7+ 0.6+ 750909 691 0.1+ 0.2- 000609 561 0.3- 0.2+ 040122 809 0.6+ 0.7+ 751007 691 2.0+ 0.6- 000804 360 0.1+ 0.1+ 040122 809 0.7+ 0.8+ 751105 801 0.7- 0.9+ 000804 360 0.2- 0.4- 751206 693 1.4+ 0.3- 000804 360 0.1- 0.1- ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2006 Apr. 7