OAA computing section circular NK 1103 8P/Tuttle

The following improved orbital elements, by S. Nakano, are from 101 observations 1912 to 1992, 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 +/- 1.31 arc seconds. Epoch = 1994 June 17.0 TT T = 1994 June 25.30118 +/- 0.00024 (m.e.) TT Peri. = 206.70309 +/- 0.00012 Node = 270.54853 +/- 0.00006 (2000.0) Inc. = 54.69242 +/- 0.00006 q = 0.9977326 +/- 0.0000006 AU e = 0.8240892 +/- 0.0000004 a = 5.6718100 +/- 0.0000022 AU n' = 0.07296617 +/- 0.00000004 P = 13.508 +/- 0.0000079 years A1 = +0.043 +/- 0.013 A2 = +0.01312 +/- 0.00001 T = 1912 Oct. 28.97259 TT Epoch = 1912 Nov. 14.0 TT Peri. = 206.94237 e = 0.8183856 Node = 270.98039 (2000.0) a = 5.6712188 AU Inc. = 55.04883 n'= 0.07297758 q = 1.0299750 AU P = 13.506 years T = 1926 Apr. 28.76592 TT Epoch = 1926 May 5.0 TT Peri. = 206.96676 e = 0.8185173 Node = 270.83618 (2000.0) a = 5.6805686 AU Inc. = 54.95580 n'= 0.07279748 q = 1.0309249 AU P = 13.539 years T = 1939 Nov. 10.61254 TT Epoch = 1939 Oct. 24.0 TT Peri. = 206.94895 e = 0.8205964 Node = 270.54236 (2000.0) a = 5.6999130 AU Inc. = 54.64916 n'= 0.07242721 q = 1.0225847 AU P = 13.608 years [ T = 1953 July 4.34437 TT Epoch = 1953 July 2.0 TT Peri. = 206.91883 e = 0.8205529 Node = 270.44913 (2000.0) a = 5.7355486 AU Inc. = 54.46707 n'= 0.07175326 q = 1.0292273 AU P = 13.736 years ] T = 1967 Mar. 31.28820 TT Epoch = 1967 Apr. 20.0 TT Peri. = 206.90425 e = 0.8219043 Node = 270.49060 (2000.0) a = 5.7436214 AU Inc. = 54.37467 n'= 0.07160204 q = 1.0229144 AU P = 13.765 years T = 1980 Dec. 14.70621 TT Epoch = 1980 Dec. 27.0 TT Peri. = 206.88573 e = 0.8225789 Node = 270.58389 (2000.0) a = 5.7204599 AU Inc. = 54.46291 n'= 0.07203734 q = 1.0149304 AU P = 13.682 years The predicted orbit for the 2008 return is as follows: T = 2008 Jan. 27.00924 TT Epoch = 2008 Jan. 15.0 TT Peri. = 207.50676 e = 0.8198569 Node = 270.34162 (2000.0) a = 5.7017979 AU Inc. = 54.98286 n'= 0.07239129 q = 1.0271397 AU P = 13.615 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1912/ 670210 056 (4.7+ 3.3-) 801201 386 0.2- 0.0 121107 806 1.4- 0.3+ 670210 056 0.1+ 2.2- 801201 386 0.1+ 1.2+ 121109 839 1.7+ 1.2- 670218 020 (5.6- 5.0+) 801202 491 (2.2+ 6.3-) 121110 839 (2.9+ 0.1+) 670301 056 1.9- 1.8- 801202 323 1.4+ 0.1- 121115 806 1.9+ 2.4+ 670301 056 (1.7- 3.8+) 801203 056 (6.9+ 12.5-) 121119 839 1.0- 1.7- 670301 056 1.7- 0.5+ 801205 474 1.2+ 0.7+ 121120 839 0.7+ 0.9- 670304 075 (8.2- 1.3+) 801205 474 1.1- 1.1+ 121130 806 (1.3- 5.6-) 670304 075 (8.8- 0.4+) 801205 474 0.1+ 1.2+ 121201 839 (3.9- 0.2-) 670310 056 (4.2- 2.0-) 801205 882 1.1- 0.3+ 121202 839 1.0+ 0.6+ 670310 056 2.5- 2.1- 801205 882 1.2- 0.7+ 121202 806 (2.2+ 2.9+) 670310 056 0.1+ 1.0- 801209 415 (2.6- 7.7+) 121202 839 2.0- 0.9+ 670311 020 (7.6- 3.1+) 801211 415 0.1- 1.5+ 121203 839 1.5- 0.3+ 670311 020 (6.1- 7.5+) 801213 882 0.0 1.1- 121208 839 1.3+ 0.8- 670315 020 (2.8- 3.5-) 801213 882 2.3- 1.4- 121213 806 (2.9- 3.1+) 670315 020 1.2- 0.7+ 801214 323 (9.8- 0.8+) 121216 839 2.5- 0.1+ 670405 020 (2.8+ 6.2+) 801215 323 2.2+ 1.1- 121216 806 (0.5+ 4.2-) 670504 076 (4.9- 4.3+) 801217 323 0.7- 0.4- 121217 806 (3.9+ 1.0-) 670504 076 (7.6- 4.5+) 801219 415 0.1+ 0.9- 121218 839 (2.9+ 4.4-) 670607 076 (5.8- 5.7+) 801219 415 0.1- 1.4+ 121220 839 1.3+ 1.4+ 670607 076(10.2- 7.6+) 801220 415 (0.1+ 4.9+) 121222 839 1.4- 2.0- 1980/ 801222 323 (4.3+ 0.3+) 1913/ 800714 801 0.0 0.8+ 801226 809 0.6- 1.9+ 130103 806 2.2+ 1.4- 800718 801 (3.5- 2.2+) 801227 809 0.4- 0.7+ 1926/ 800719 801 2.6- 0.5+ 801228 809 1.0+ 0.9+ 260112 029 (3.3- 1.5+) 801004 372 (0.7- 2.9+)Y 801229 809 0.8- 0.0 260211 754 (2.9- 0.9+) 801008 372 (3.6+ 1.8+)Y 801230 415 2.1+ 1.1- 260306 754 2.1+ 0.1+ 801102 056 1.9+ 2.6- 801231 415 1.4+ 0.1+ 260310 029 (1.8- 3.8+) 801102 056 (5.2+ 6.2-) 1981/ 260312 020 (0.1+ 10.0-) 801103 993 (7.6+ 8.6-) 810101 415 (3.0+ 1.8+) 260313 754 (4.6+ 0.3-) 801103 056 (1.2- 4.2-) 810102 809 0.6- 1.5- 260313 020(13.4+ 2.4+) 801106 210 (1.2+ 9.1-) 810102 415 2.2+ 2.5- 260315 029 0.0 0.0 801106 210 (3.1+ 6.3-) 810103 809 0.4- 0.3- 1939/ 801108 210 (2.5+ 9.2-) 810104 809 1.8- 0.4+ 390812 662 1.9+ 0.4+ 801108 056 (0.7+ 4.1-) 810105 809 0.8+ 1.2- 390812 662 2.1+ 0.2- 801109 056 (2.5+ 5.9-) 810105 323 (6.2+ 3.2+) 390818 662 2.2+ 0.1- 801111 056 (5.0+ 2.1-) 810106 809 0.3+ 0.1- 390818 662 (3.0+ 0.0 ) 801111 509 (2.4+ 9.2-) 810107 809 0.2- 0.9+ 390918 754 2.7+ 0.2- 801111 509 (2.2+ 3.4-) 810108 809 0.2- 1.5+ 391014 662 1.5+ 0.7- 801111 509 (0.6+ 3.3-) 810108 474 0.1+ 0.6- 391015 754 (3.0+ 0.4+) 801111 210 2.1+ 1.4- 810108 474 0.1+ 0.1+ 391016 662 1.6+ 0.6+ 801111 210 (6.0+ 5.4-) 810109 809 2.4- 0.9+ 391018 754 0.1- 2.0+ 801112 056 1.4- 0.2+ 810113 415 1.3- 2.4- 391020 754 0.8+ 0.8+ 801112 056 2.1+ 1.5+ 810113 323 (4.1+ 0.5-) 391110 078 (2.1+ 4.8+) 801113 372 (3.4+ 0.4-)Y 810114 415 2.0+ 1.9+ 391110 078 (1.4- 4.0+) 801114 056 (4.4+ 5.8+) 810114 323 (1.1+ 2.8-) 391111 754 (0.8- 3.9+) 801114 491 (3.6+ 2.2-) 810116 415 2.7+ 1.4+ 391113 078 0.8+ 1.7+ 801114 509 (7.3+ 10.7-) 810117 415 2.4+ 0.2+ 391113 078 1.1+ 1.0- 801114 509 (4.2+ 6.5-) 810121 323 (2.9+ 2.9-) 391113 754 (0.5+ 3.0+) 801114 882 1.0- 0.3+ 810122 323 1.8+ 2.7- 391121 078 0.6+ 2.2+ 801114 882 (4.1- 0.4+) 810126 415 (4.9+ 0.2+) 391130 078 1.3+ 1.1+ 801115 491 0.6+ 2.0- 810127 323 (0.8- 4.1-) 391130 078 0.9+ 1.6- 801115 210 (4.5+ 0.1+) 810209 323 1.1- 0.3- 391209 078 2.1- 1.1+ 801115 210 (6.7+ 1.7-) 810212 323 (0.4+ 3.5-) 391211 078 (6.1- 1.4-) 801115 210 (3.2+ 4.2-) 810223 415 (5.2- 1.9+) 391221 078 0.7- 0.2+ 801117 688 (3.0+ 3.6-) 810228 415 (5.0+ 1.9+)Y 1967/ 801118 882 1.1- 0.6+ 810228 323 (1.1+ 8.5+) 670107 693 0.2- 0.0 801118 882 1.9- 0.1- 810312 415 (4.6+ 1.3-) 670107 693 0.3- 0.3- 801119 509 (1.6+ 7.7-) 810402 474 (2.8- 1.3+) 670114 020 1.6+ 0.3- 801120 006(16.0- 4.5-) 810402 474 1.6- 1.4+ 670114 020 2.5+ 1.3- 801120 509 (3.0+ 2.1-) 810403 474 1.4- 2.4- 670115 075 (3.9- 5.9-) 801120 006 (3.5- 8.3-) 810502 474 1.2- 2.0+ 670130 075 (4.6- 5.2-) 801123 509(12.1+ 11.3-) 810502 474 0.6- 1.7+ 670130 075 (9.4- 5.6-) 801126 323 0.7- 0.3+ 1992/ 670201 020 (5.5- 0.3-) 801127 323 0.2- 0.4- 920729 950 (3.8- 2.6-) 670201 020 (7.9- 1.0-) 801128 509 (4.8+ 30.0-) 920729 950 0.1+ 1.0+ 670203 488 (2.2- 7.0-) 801129 509 (9.5- 20.4+) 920729 950 0.1+ 1.1+ 670203 488 (3.1+ 7.5-) 801129 415 1.4- 0.9- 920730 950 1.2- 0.7+ 670206 020 (6.9- 0.2+) 801129 415 (1.9+ 3.5+) 920731 950 0.2- 1.0+ 670206 020 0.1- 0.9+ 801201 386 0.2+ 0.3+ ( ) -------- Rejected Obs.

Director, Computing Section Syuichi Nakano 2004 Oct. 15

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