Nakano Note (Nakano wa Kangaeru noda) NK 2149 106P/Schuster
The following improved orbital elements, by S. Nakano, are from 214 observations 1977 to 2007, 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 +/- 0.76 arc second. See the previous orbits in NK 508, NK 644 and NK 1043 (= HICQ 2006 and MPC 51822). Epoch = 2007 Apr. 10.0 TT T = 2007 Apr. 2.22171 +/- 0.00044 (m.e.) TT Peri. = 355.82910 +/- 0.00018 Node = 50.61223 +/- 0.00004 (2000.0) Inc. = 20.11133 +/- 0.00002 q = 1.5561332 +/- 0.0000006 AU e = 0.5868019 +/- 0.0000003 a = 3.7660709 +/- 0.0000009 AU n' = 0.13485633 +/- 0.00000005 P = 7.309 +/- 0.0000026 years A1 = +0.115 +/- 0.018 A2 = +0.00675 +/- 0.00018 T = 1978 Jan. 6.81331 TT Epoch = 1978 Jan. 12.0 TT Peri. = 353.92938 e = 0.5740267 Node = 51.52044 (2000.0) a = 3.8208401 AU Inc. = 20.44748 n'= 0.13196713 q = 1.6275759 AU P = 7.469 years [ T = 1985 June 2.52511 TT Epoch = 1985 May 15.0 TT Peri. = 355.62965 e = 0.5902377 Node = 50.67357 (2000.0) a = 3.7448804 AU Inc. = 20.15271 n'= 0.13600258 q = 1.5345107 AU P = 7.247 years ] T = 1992 Sept. 6.41684 TT Epoch = 1992 Sept.15.0 TT Peri. = 355.73123 e = 0.5895211 Node = 50.60180 (2000.0) a = 3.7498517 AU Inc. = 20.13384 n'= 0.13573221 q = 1.5392351 AU P = 7.261 years T = 1999 Dec. 16.22614 TT Epoch = 1999 Dec. 8.0 TT Peri. = 355.85855 e = 0.5879214 Node = 50.58925 (2000.0) a = 3.7607348 AU Inc. = 20.13872 n'= 0.13514345 q = 1.5497183 AU P = 7.293 years The predicted orbit for the 2014 return is as follows: T = 2014 July 20.14390 TT Epoch = 2014 July 2.0 TT Peri. = 355.91547 e = 0.5883611 Node = 50.54375 (2000.0) a = 3.7558348 AU Inc. = 20.14872 n'= 0.13540801 q = 1.5460478 AU P = 7.279 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1977/ 1999/ 991221 355 0.1- 0.2+ 770905 809 2.0+ 2.3+ 990901 413 0.0 0.3- 991221 355 0.5+ 0.5+ 770906 809 0.7+ 0.6+ 990901 413 0.1+ 0.3- 991221 355 0.6+ 0.4+ 770906 809 1.4+ 0.7+ 990914 413 0.1+ 0.3- 991222 046 0.4- 0.1- 770907 809 0.8+ 0.9+ 990914 413 0.2+ 0.2- 991222 046 0.8- 0.2- 770907 809 1.4- 0.1- 991006 704 0.7- 0.7- 991222 046 0.5- 0.0 770907 809 0.8- 0.2+ 991006 704 0.4- 0.3+ 991222 046 0.2- 0.3- 770911 809 0.1- 0.3- 991006 704 1.4- 0.6- 991222 118 0.1+ 0.4+ 770916 413 (2.9- 3.3+) 991006 704 1.5- 1.2- 991222 118 0.2- 0.3+ 771009 809 1.1+ 1.3- 991009 900 1.6- 1.9+ 991223 349 0.8- 0.4- 771010 809 0.4+ 1.3- 991009 900 1.2- 1.7+ 991223 349 0.2- 0.4- 771010 809 0.6+ 0.1- 991017 360 0.1- 0.1+ 991223 349 0.9- 0.5- 771011 809 1.0+ 0.9- 991017 360 0.1- 0.1+ 991223 900 0.9- 0.3+ 771012 809 1.2+ 0.7- 991020 897 0.7+ 0.5+ 991223 900 0.1- 0.4+ 771013 809 0.2+ 0.6- 991020 897 0.7+ 0.5+ 991224 897 0.2- 0.0 771013 809 1.1+ 0.3- 991020 349 0.7- 0.2- 991224 897 0.6- 0.1- 771013 809 1.4+ 1.3- 991020 349 0.5- 0.0 991228 351 0.2- 0.8+ 771014 809 0.9+ 0.6- 991020 349 0.5- 0.4- 991228 351 0.3+ 1.4- 771015 809 0.8+ 1.3- 991024 402 0.1+ 0.1- 991228 351 1.3+ 0.5- 771015 809 0.8- 0.3+ 991024 402 0.4- 0.1- 991231 351 (2.8- 0.6+) 771016 809 0.5- 0.6- 991024 402 0.2- 0.5- 991231 351 1.1- 0.2+ 771017 809 0.2+ 0.9- 991103 402 0.3- 0.9+ 991231 351 0.6+ 0.1- 771019 805 0.0 0.6+ 991103 402 0.4- 0.9+ 2000/ 771031 323 0.8- 0.8- 991104 360 0.2- 0.2+ 000101 897 0.1+ 0.1+ 771108 809 0.5+ 1.0- 991104 360 0.4- 0.1+ 000101 897 1.3+ 0.2- 771110 809 0.3- 2.3- 991104 900 0.6- 0.6+ 000101 897 0.6+ 0.1- 771110 809 0.1+ 1.8- 991104 900 1.0- 0.3+ 000102 367 0.1- 0.4+ 771111 808 1.4- 0.5- 991107 351 1.4- 0.0 000102 367 0.2- 0.3+ 771111 808 0.6+ 0.3+ 991107 351 0.5+ 0.5- 000102 367 0.2- 0.2+ 771113 809 0.3+ 1.1- 991107 351 1.1- 0.2- 000103 587 0.0 0.8+ 771114 805 0.5+ 0.1+ 991110 704 (5.7+ 3.2+) 000103 587 0.1- 0.1+ 771116 805 2.1- 0.6+ 991110 704 (4.8+ 4.2+) 000104 360 0.2- 0.1+ 771203 809 0.3- 0.1+ 991110 704 (1.8+ 2.6+) 000104 360 0.3- 0.1+ 771203 809 0.6- 1.0- 991110 704 (3.8+ 4.7+) 000107 704 0.6+ 1.9+ 771203 879 0.9- 0.5- 991110 704 (3.7+ 6.2+) 000107 704 (3.2+ 0.7+) 771204 323 0.3- 1.7- 991110 360 0.1- 0.4- 000107 704 (5.3+ 1.0+) 1978/ 991110 360 0.0 0.4- 000107 704 0.2+ 0.6+ 780102 323 0.1+ 0.3- 991112 695 1.4+ 1.4+ 000107 704 (1.7+ 4.7-) 780108 809 1.0+ 0.1+ 991112 695 (1.8+ 3.4+) 000108 349 0.1- 0.5- 1992/ 991112 695 1.7+ 1.6+ 000108 349 0.7+ 0.2- 920728 372 (4.7- 0.6-) 991113 897 0.9+ 0.8+ 000108 349 0.2+ 1.1+ 920728 372 2.2- 0.6- 991113 897 0.4+ 0.8+ 000108 351 (0.1+ 3.6-) 920729 372 (6.6- 0.5-) 991113 351 0.5+ 1.5+ 000108 351 0.2- 1.4- 920729 372 (5.5- 2.4-) 991113 351 0.5+ 1.4+ 000108 351 (1.2+ 2.0-) 920825 801 (2.7+ 0.4+) 991113 897 0.8+ 0.6+ 000111 402 0.6- 1.1- 920825 801 1.0- 0.4+ 991113 351 1.3+ 1.0+ 000111 402 0.5+ 0.4+ 920827 657 0.0 0.8+ 991113 349 0.0 0.3+ 000111 402 0.4+ 0.2- 920827 657 0.7+ 0.7+ 991113 349 0.5+ 0.4+ 000118 900 0.1- 0.1+ 920828 657 1.2+ 1.2+ 991113 349 0.4+ 0.3+ 000118 900 0.4- 0.2- 920828 657 0.5- 0.0 991115 699 (4.8+ 3.6+) 000122 349 0.9+ 0.3+ 920828 657 0.1+ 0.8+ 991115 699 (5.4+ 4.2+) 000122 349 0.1- 0.4- 920905 411 (2.5- 2.1-) 991115 699 (6.5+ 6.7+) 000122 349 0.2+ 0.6- 920905 411 0.7- 0.5- 991115 474 0.9+ 1.1+ 000128 360 0.6- 0.3- 920905 411 1.3- 0.2- 991115 474 0.5+ 0.1+ 000128 360 0.3- 0.2+ 920925 801 1.3- 0.1+ 991118 349 0.8+ 0.0 000131 704 (3.5+ 0.4+) 920925 801 0.4- 0.6+ 991118 349 0.7- 0.1+ 000131 704 (3.9+ 1.0+) 920925 360 1.8+ 0.6+ 991118 349 0.0 0.3- 000131 704 (3.5+ 2.0+) 920925 360 0.9+ 0.3+ 991120 046 0.4+ 0.4+ 000131 704 (3.3+ 0.8+) 920929 033 2.3+ 0.5+ 991120 046 0.2+ 0.2+ 000205 349 0.6- 0.0 920929 033 (5.4- 0.5+) 991120 046 0.2+ 0.3+ 000205 349 0.3- 0.8- 921001 801 1.3- 1.4+ 991128 351 1.6- 1.3- 000301 900 1.8+ 0.9+ 921001 801 0.3- 0.3+ 991128 351 0.1- 0.6+ 000301 360 0.4+ 0.2- 921022 691 0.2+ 0.2- 991128 900 0.1+ 0.6+ 000301 360 0.5+ 0.1+ 921022 691 0.5- 0.5+ 991128 351 0.5+ 0.3- 000301 900 0.1- 1.3+ 921023 801 0.9+ 1.0- 991128 900 0.2+ 0.5+ 2006/ 921023 801 1.1- 0.4+ 991128 349 0.5- 0.2- 061215 E12 0.5- 1.2- 921025 360 0.0 0.2+ 991128 349 0.0 0.9- 061219 E12 0.9- 0.6- 921025 360 0.8+ 0.2- 991128 349 0.5+ 0.1+ 061221 844 1.3+ 0.7+ 921028 801 (2.4+ 0.6-) 991130 360 0.8- 0.2+ 061221 844 0.0 0.8+ 921028 801 0.6+ 0.0 991130 360 0.8- 0.0 061221 844 0.4- 1.2- 921030 411 1.2- 1.5- 991130 897 0.0 1.2- 061221 844 0.6- 1.4- 921030 411 1.7- 0.4- 991130 897 0.1+ 1.2- 061221 844 0.8+ 1.1+ 921102 033 0.7+ 0.4+ 991202 704 0.9- 1.3- 061222 844 0.1- 0.7+ 921102 033 1.2+ 0.6+ 991202 704 (9.2+ 2.5+) 061222 844 (5.8+ 1.3+) 921102 033 0.6- 0.1- 991202 704 (2.1+ 0.8+) 061222 844 1.6+ 1.6+ 921102 033 0.2+ 0.7- 991202 704 (7.6+ 2.4+) 061222 844 (2.4+ 1.6+) 921121 411 0.1- 0.1- 991202 704 (2.0+ 4.1-) 061227 844 0.1+ 0.8- 921121 411 1.3- 0.6- 991203 704 (7.2+ 1.1+) 061227 844 1.7+ 0.7+ 921124 360 0.3+ 0.0 991203 704 (4.2+ 0.6+) 061231 349 0.5+ 0.6- 921124 360 0.2- 0.8- 991203 704 (4.2+ 0.9+) 061231 349 0.2+ 0.4- 921130 360 0.2- 0.5- 991203 704 (4.3+ 1.6+) 061231 349 0.3+ 0.0 921130 360 0.3- 0.2- 991208 360 0.3- 0.0 2007/ 921201 691 0.1+ 0.9- 991208 360 0.0 0.0 070113 215 0.8- 1.2- 921201 691 0.2- 0.7- 991209 699 (6.7+ 1.9+) 070113 215 0.6- 0.9- 921201 691 0.3+ 1.0- 991210 349 0.2- 0.7- 070113 215 0.4- 0.5- 921218 596 (7.0- 0.2-) 991210 349 0.0 0.2- 070127 349 0.3- 0.3- 921218 596(10.6- 2.7+) 991210 349 0.0 0.2- 070127 349 0.4+ 0.3+ ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2011 Nov. 2