OAA computing section circular NK 962 54P/de Vico-Swift-NEAT
The following improved orbital elements, by S. Nakano, are from 72 observations 1894 to 2002, including planetary perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas, Vesta, and non-gravitational effect of style II. The mean residual is +/- 0.95 arc second. Epoch = 2002 July 25.0 TT T = 2002 July 30.93408 +/- 0.00295 (m.e.) TT Peri. = 2.05224 +/- 0.00045 Node = 358.96520 +/- 0.00043 (2000.0) Inc. = 6.08498 +/- 0.00006 q = 2.1449695 +/- 0.0000085 AU e = 0.4306901 +/- 0.0000022 a = 3.7676660 +/- 0.0000055 AU n' = 0.13477070 +/- 0.00000030 P = 7.313 +/- 0.0000160 years A1 = +0.512 +/- 0.013 A2 = -0.03676 +/- 0.00056 T = 1894 Oct. 12.63317 TT Epoch = 1894 Oct. 19.0 TT Peri. = 296.76844 e = 0.5719017 Node = 49.98580 (2000.0) a = 3.2508378 AU Inc. = 2.97404 n'= 0.16815552 q = 1.3916780 AU P = 5.861 years [ T = 1901 Feb. 16.16261 TT Epoch = 1901 Feb. 25.0 TT Peri. = 324.11217 e = 0.5157420 Node = 26.16715 (2000.0) a = 3.4480934 AU Inc. = 3.59177 n'= 0.15393435 q = 1.6697667 AU P = 6.403 years ] [ T = 1907 July 18.88078 TT Epoch = 1907 July 4.0 TT Peri. = 324.24293 e = 0.5151678 Node = 26.12108 (2000.0) a = 3.4519271 AU Inc. = 3.58932 n'= 0.15367798 q = 1.6736053 AU P = 6.413 years ] [ T = 1913 Dec. 26.58560 TT Epoch = 1913 Dec. 19.0 TT Peri. = 324.32983 e = 0.5091852 Node = 25.99759 (2000.0) a = 3.4731070 AU Inc. = 3.57802 n'= 0.15227438 q = 1.7046522 AU P = 6.473 years ] [ T = 1920 June 21.50580 TT Epoch = 1920 June 5.0 TT Peri. = 324.37385 e = 0.5079623 Node = 25.97871 (2000.0) a = 3.4806779 AU Inc. = 3.57423 n'= 0.15177782 q = 1.7126246 AU P = 6.494 years ] [ T = 1926 Dec. 15.91133 TT Epoch = 1926 Dec. 31.0 TT Peri. = 324.23951 e = 0.5077364 Node = 25.96851 (2000.0) a = 3.4815351 AU Inc. = 3.57365 n'= 0.15172177 q = 1.7138329 AU P = 6.496 years ] [ T = 1933 June 15.30625 TT Epoch = 1933 June 17.0 TT Peri. = 324.15644 e = 0.5063605 Node = 25.99891 (2000.0) a = 3.4871633 AU Inc. = 3.57055 n'= 0.15135461 q = 1.7214016 AU P = 6.512 years ] [ T = 1939 Dec. 15.54650 TT Epoch = 1939 Dec. 3.0 TT Peri. = 324.18250 e = 0.5079668 Node = 25.95817 (2000.0) a = 3.4811726 AU Inc. = 3.57461 n'= 0.15174547 q = 1.7128525 AU P = 6.495 years ] [ T = 1946 June 7.11896 TT Epoch = 1946 May 20.0 TT Peri. = 324.05064 e = 0.5087749 Node = 25.94007 (2000.0) a = 3.4757561 AU Inc. = 3.57630 n'= 0.15210032 q = 1.7073786 AU P = 6.480 years ] [ T = 1952 Nov. 28.32352 TT Epoch = 1952 Dec. 14.0 TT Peri. = 324.25962 e = 0.5104217 Node = 25.84974 (2000.0) a = 3.4688853 AU Inc. = 3.58031 n'= 0.15255244 q = 1.6982909 AU P = 6.461 years ] [ T = 1959 Apr. 26.79916 TT Epoch = 1959 Apr. 22.0 TT Peri. = 325.24990 e = 0.5237766 Node = 25.14076 (2000.0) a = 3.4185102 AU Inc. = 3.61107 n'= 0.15593685 q = 1.6279745 AU P = 6.321 years ] T = 1965 Aug. 23.25395 TT Epoch = 1965 Aug. 28.0 TT Peri. = 325.41390 e = 0.5244232 Node = 25.06689 (2000.0) a = 3.4154719 AU Inc. = 3.61225 n'= 0.15614497 q = 1.6243191 AU P = 6.312 years [ T = 1973 Feb. 13.70104 TT Epoch = 1973 Feb. 7.0 TT Peri. = 1.78712 e = 0.4253928 Node = 359.33302 (2000.0) a = 3.7898332 AU Inc. = 6.08909 n'= 0.13359000 q = 2.1776653 AU P = 7.378 years ] [ T = 1980 July 9.15928 TT Epoch = 1980 July 20.0 TT Peri. = 1.87290 e = 0.4241932 Node = 359.28594 (2000.0) a = 3.8010254 AU Inc. = 6.08071 n'= 0.13300039 q = 2.1886561 AU P = 7.411 years ] [ T = 1987 Nov. 29.81059 TT Epoch = 1987 Nov. 21.0 TT Peri. = 1.82384 e = 0.4255867 Node = 359.26949 (2000.0) a = 3.7938027 AU Inc. = 6.08479 n'= 0.13338038 q = 2.1792106 AU P = 7.389 years ] [ T = 1995 Apr. 2.94208 TT Epoch = 1995 Mar. 24.0 TT Peri. = 1.84448 e = 0.4307985 Node = 359.05042 (2000.0) a = 3.7676183 AU Inc. = 6.08839 n'= 0.13477326 q = 2.1445342 AU P = 7.313 years ] The predicted orbit for the 2009 return is as follows: T = 2009 Nov. 28.43259 TT Epoch = 2009 Nov. 25.0 TT Peri. = 1.91342 e = 0.4266756 Node = 358.85309 (2000.0) a = 3.7885087 AU Inc. = 6.06839 n'= 0.13366006 q = 2.1720443 AU P = 7.374 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1894/ 021012 620 0.2- 0.4+ 021031 735 0.2+ 0.2- 941123 020 1.7+ 0.1- 021012 620 0.7- 0.8- 021031 735 0.4+ 0.2- 941202 546 1.0- 0.3- 021012 620 0.2+ 0.6+ 021104 349 0.3+ 0.9- 941216 020 4.0- 2.8+ 021012 620 0.2- 0.8- 021104 349 0.8+ 0.3- 941228 020 2.5+ 1.0+ 021012 673 0.8- 0.6+ 021104 349 1.0- 0.1+ 1895/ 021012 673 0.5- 0.6+ 021104 349 0.1- 0.8- 950126 662 3.1+ 1.5- 021012 673 0.6- 0.8+ 021105 360 0.6+ 0.2- 950130 662 1.8- 4.2- 021012 658 0.6+ 0.5+ 021105 360 0.4+ 0.4- 1965/ 021012 658 0.0 0.5+ 021105 213 0.5- 0.7+ 650804 689 1.6+ 0.1- 021012 658 0.3+ 0.4+ 021105 213 (1.6- 3.4-) 650804 693 0.7- 0.5- 021012 926 0.0 0.1- 021107 735 0.6- 0.6+ 650804 689 0.3+ 0.0 021012 926 0.5- 0.5- 021107 735 1.7+ 0.2- 650806 689 0.5+ 0.8- 021012 J95 (2.0+ 0.1-) 021107 735 1.5+ 1.1+ 650806 689 0.3- 0.7- 021012 J95 0.1+ 0.1+ 021112 704 0.4- 0.9+ 650825 689 0.7- 0.1+ 021012 J95 0.4+ 0.7- 021112 704 0.0 1.1- 650825 689 1.0- 0.3+ 021013 170 1.0- 1.4- 021112 704 (2.1+ 0.7+) 650902 689 0.5+ 0.1- 021013 170 1.6- 0.6- 021112 704 0.4- 1.1- 650902 689 0.4+ 0.2- 021013 349 1.0+ 0.5- 021226 H43 (3.2+ 0.3-) 650925 689 0.8+ 0.1+ 021013 349 0.6+ 0.2- 021227 H43 (6.6+ 2.7+) 650925 689 0.9+ 0.0 021013 372 0.9- 0.6+ 021227 H43 (5.8- 1.1+) 651015 689 1.0- 0.4+ 021013 349 (2.2- 0.3+) 021227 360 0.4+ 0.5+ 651015 689 0.9- 0.5+ 021013 372 1.1+ 0.1+ 021227 360 (1.7+ 2.7+) 2002/ 021014 360 0.8+ 0.2- 021227 360 0.3+ 1.6+ 021004 704 0.9+ 0.5+ 021014 360 0.5+ 0.2+ 021228 H43 1.0- 1.5- 021004 704 0.4- 0.5+ 021014 360 0.3- 0.4- 021228 H43 (3.6- 4.4+) 021004 704 0.6+ 0.1+ 021015 372 0.5- 1.5+ 2003/ 021009 704 (2.6- 1.2+) 021025 213 (1.6- 3.8+) 030103 H43 (2.4- 2.5+) 021009 704 (1.4- 2.6+) 021025 213 (1.6+ 2.2-) 030103 H43 (3.7- 0.8+) 021009 704 0.6+ 0.1- 021025 213 0.7- 1.3- 030124 A03 (4.3- 2.2+) 021009 704 0.0 1.3+ 021027 170 0.4+ 0.4- 030124 A03 (9.0- 2.6-) 021011 644 0.5- 0.0 021027 170 (1.6- 2.3-) 030205 H43 (4.4- 1.7-) 021011 644 0.7- 0.2- 021027 170 (4.0- 5.1-) 030205 H43 (5.8+ 3.0+) 021011 644 0.5- 0.2+ 021031 735 0.3- 0.2+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2003 Oct. 13