Nakano Note (Nakano wa Kangaeru noda) NK 2758 106P/Schuster
The following improved orbital elements, by S. Nakano, are from 225 observations 1977 to 2014, 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 +/- 0.77 arc second. The residuals of re-observations on 2014 June 9 were -7" (R. A.) and -6" (Decl.) from the predicted orbit in NK 2149 (= HICQ 2014) with the delta-T correction = +0.006 day. The comet has passed 1.04 AU from Jupiter on 1983 May 3 and 0.098 AU from Mars on 1992 Sept. 12 UT. See the previous orbits in NK 296, NK 301, NK 310, NK 333, NK 370, NK 508, NK 644, NK 1043 and NK 2149. Epoch = 2014 July 2.0 TT T = 2014 July 20.15261 +/- 0.00041 (m.e.) TT Peri. = 355.91653 +/- 0.00023 Node = 50.54373 +/- 0.00004 (2000.0) Inc. = 20.14870 +/- 0.00002 q = 1.5460501 +/- 0.0000005 AU e = 0.5883623 +/- 0.0000003 a = 3.7558517 +/- 0.0000007 AU n' = 0.13540709 +/- 0.00000004 P = 7.279 +/- 0.0000020 years A1 = +0.012 +/- 0.014 A2 = +0.00863 +/- 0.00008 T = 1978 Jan. 6.81157 TT Epoch = 1978 Jan. 12.0 TT Peri. = 353.92809 e = 0.5740252 Node = 51.52050 (2000.0) a = 3.8208524 AU Inc. = 20.44751 n'= 0.13196650 q = 1.6275868 AU P = 7.469 years [ T = 1985 June 2.52535 TT Epoch = 1985 May 15.0 TT Peri. = 355.62891 e = 0.5902382 Node = 50.67354 (2000.0) a = 3.7448898 AU Inc. = 20.15269 n'= 0.13600207 q = 1.5345127 AU P = 7.247 years ] T = 1992 Sept. 6.41622 TT Epoch = 1992 Sept.15.0 TT Peri. = 355.73102 e = 0.5895218 Node = 50.60178 (2000.0) a = 3.7498637 AU Inc. = 20.13383 n'= 0.13573157 q = 1.5392372 AU P = 7.261 years T = 1999 Dec. 16.22654 TT Epoch = 1999 Dec. 8.0 TT Peri. = 355.85874 e = 0.5879223 Node = 50.58923 (2000.0) a = 3.7607482 AU Inc. = 20.13871 n'= 0.13514273 q = 1.5497204 AU P = 7.293 years T = 2007 Apr. 2.22537 TT Epoch = 2007 Apr. 10.0 TT Peri. = 355.82978 e = 0.5868030 Node = 50.61221 (2000.0) a = 3.7660863 AU Inc. = 20.11132 n'= 0.13485550 q = 1.5561355 AU P = 7.309 years The predicted orbit for the 2021 return is as follows: T = 2021 Aug. 18.76931 TT Epoch = 2021 Aug. 14.0 TT Peri. = 353.66817 e = 0.5936798 Node = 48.88588 (2000.0) a = 3.7620890 AU Inc. = 19.53615 n'= 0.13507049 q = 1.5286127 AU P = 7.297 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1977/ 991009 900 1.7- 1.4+ 991228 351 1.4+ 0.3- 770905 809 (2.3+ 3.2+) 991009 900 1.2- 1.3+ 991231 351 (2.7- 0.8+) 770906 809 1.0+ 1.5+ 991017 360 0.2- 0.3- 991231 351 1.0- 0.4+ 770906 809 1.8+ 1.6+ 991017 360 0.2- 0.3- 991231 351 0.7+ 0.1+ 770907 809 1.1+ 1.8+ 991020 897 0.6+ 0.1+ 2000/ 770907 809 1.1- 0.8+ 991020 897 0.6+ 0.1+ 000101 897 0.3+ 0.3+ 770907 809 0.5- 1.1+ 991020 349 0.8- 0.6- 000101 897 1.5+ 0.0 770911 809 0.1+ 0.5+ 991020 349 0.6- 0.4- 000101 897 0.7+ 0.1+ 770916 413 (2.6- 4.1+) 991020 349 0.6- 0.8- 000102 367 0.0 0.6+ 771009 809 1.2+ 0.9- 991024 402 0.0 0.5- 000102 367 0.1- 0.6+ 771010 809 0.4+ 1.0- 991024 402 0.5- 0.4- 000102 367 0.1- 0.4+ 771010 809 0.6+ 0.3+ 991024 402 0.3- 0.9- 000103 587 0.2+ 1.0+ 771011 809 1.0+ 0.6- 991103 402 0.4- 0.6+ 000103 587 0.0 0.3+ 771012 809 1.2+ 0.3- 991103 402 0.5- 0.6+ 000104 360 0.1- 0.3+ 771013 809 0.2+ 0.2- 991104 360 0.3- 0.1- 000104 360 0.1- 0.3+ 771013 809 1.1+ 0.0 991104 360 0.5- 0.2- 000107 704 (0.7+ 2.1+) 771013 809 1.4+ 1.0- 991104 900 0.7- 0.3+ 000107 704 (3.3+ 0.9+) 771014 809 0.9+ 0.3- 991104 900 1.1- 0.1+ 000107 704 (5.5+ 1.3+) 771015 809 0.8+ 1.0- 991107 351 1.5- 0.3- 000107 704 0.3+ 0.9+ 771015 809 0.8- 0.6+ 991107 351 0.4+ 0.8- 000107 704 (1.9+ 4.4-) 771016 809 0.5- 0.3- 991107 351 1.2- 0.4- 000108 349 0.0 0.3- 771017 809 0.1+ 0.7- 991110 704 (5.6+ 3.0+) 000108 349 0.8+ 0.1+ 771019 805 0.0 0.9+ 991110 704 (4.7+ 4.0+) 000108 349 0.3+ 1.3+ 771031 323 1.0- 0.7- 991110 704 (1.7+ 2.4+) 000108 351 (0.2+ 3.3-) 771108 809 0.2+ 0.9- 991110 704 (3.8+ 4.5+) 000108 351 0.1- 1.1- 771110 809 0.7- 2.3- 991110 704 (3.6+ 6.0+) 000108 351 1.3+ 1.7- 771110 809 0.3- 1.7- 991110 360 0.2- 0.6- 000111 402 0.4- 0.8- 771111 808 1.7- 0.5- 991110 360 0.1- 0.6- 000111 402 0.7+ 0.6+ 771111 808 0.2+ 0.3+ 991112 695 1.3+ 1.2+ 000111 402 0.6+ 0.1+ 771113 809 0.1- 1.1- 991112 695 (1.7+ 3.2+) 000118 900 0.1+ 0.4+ 771114 805 0.1+ 0.1+ 991112 695 1.6+ 1.4+ 000118 900 0.2- 0.1+ 771116 805 (2.5- 0.6+) 991113 897 0.8+ 0.7+ 000122 349 1.1+ 0.5+ 771203 809 0.9- 0.0 991113 897 0.4+ 0.6+ 000122 349 0.1+ 0.2- 771203 809 1.2- 1.0- 991113 351 0.4+ 1.3+ 000122 349 0.4+ 0.4- 771203 879 1.4- 0.6- 991113 351 0.4+ 1.3+ 000128 360 0.4- 0.0 771204 323 0.8- 1.8- 991113 897 0.8+ 0.4+ 000128 360 0.1- 0.4+ 1978/ 991113 351 1.2+ 0.9+ 000131 704 (3.7+ 0.6+) 780102 323 0.4- 0.2- 991113 349 0.1- 0.1+ 000131 704 (4.1+ 1.3+) 780108 809 0.5+ 0.3+ 991113 349 0.4+ 0.2+ 000131 704 (3.7+ 2.2+) 1992/ 991113 349 0.3+ 0.2+ 000131 704 (3.5+ 1.1+) 920728 372 (5.0- 1.0-) 991115 699 (4.7+ 3.5+) 000205 349 0.4- 0.2+ 920728 372 (2.6- 1.0-) 991115 699 (5.4+ 4.1+) 000205 349 0.1- 0.5- 920729 372 (6.9- 0.9-) 991115 699 (6.4+ 6.6+) 000301 900 (2.0+ 1.1+) 920729 372 (5.8- 2.8-) 991115 474 0.9+ 1.0+ 000301 360 0.6+ 0.0 920825 801 (2.4+ 0.1+) 991115 474 0.4+ 0.1- 000301 360 0.7+ 0.3+ 920825 801 1.3- 0.0 991118 349 0.7+ 0.2- 000301 900 0.2+ 1.6+ 920827 657 0.3- 0.5+ 991118 349 0.7- 0.1- 2006/ 920827 657 0.4+ 0.4+ 991118 349 0.1- 0.4- 061215 E12 0.8+ 0.5- 920828 657 0.9+ 0.8+ 991120 046 0.4+ 0.3+ 061219 E12 0.5+ 0.1+ 920828 657 0.8- 0.4- 991120 046 0.2+ 0.1+ 061221 844 (2.8+ 1.5+) 920828 657 0.2- 0.4+ 991120 046 0.1+ 0.2+ 061221 844 1.4+ 1.6+ 920905 411 (2.8- 2.4-) 991128 351 1.6- 1.3- 061221 844 1.1+ 0.4- 920905 411 1.0- 0.8- 991128 351 0.2- 0.6+ 061221 844 0.8+ 0.6- 920905 411 1.6- 0.4- 991128 900 0.1+ 0.6+ 061221 844 (2.2+ 1.9+) 920925 801 1.4- 0.1- 991128 351 0.5+ 0.3- 061222 844 1.3+ 1.6+ 920925 801 0.6- 0.4+ 991128 900 0.1+ 0.4+ 061222 844 (7.2+ 2.1+) 920925 360 1.6+ 0.4+ 991128 349 0.6- 0.2- 061222 844 (3.1+ 2.5+) 920925 360 0.8+ 0.1+ 991128 349 0.0 1.0- 061222 844 (3.8+ 2.4+) 920929 033 2.2+ 0.3+ 991128 349 0.5+ 0.0 061227 844 1.6+ 0.2+ 920929 033 (5.5- 0.3+) 991130 360 0.8- 0.2+ 061227 844 (3.2+ 1.7+) 921001 801 1.4- 1.2+ 991130 360 0.8- 0.0 061231 349 (2.1+ 0.4+) 921001 801 0.5- 0.1+ 991130 897 0.0 1.2- 061231 349 1.8+ 0.6+ 921022 691 0.2+ 0.2- 991130 897 0.1+ 1.2- 061231 349 1.9+ 1.0+ 921022 691 0.5- 0.4+ 991202 704 0.9- 1.2- 2007/ 921023 801 0.9+ 1.1- 991202 704 (9.1+ 2.6+) 070113 215 1.0+ 0.2+ 921023 801 1.0- 0.4+ 991202 704 (2.1+ 0.8+) 070113 215 1.2+ 0.4+ 921025 360 0.0 0.1+ 991202 704 (7.6+ 2.5+) 070113 215 1.4+ 0.8+ 921025 360 0.9+ 0.3- 991202 704 (2.0+ 4.1-) 070127 349 1.7+ 1.3+ 921028 801 (2.5+ 0.7-) 991203 704 (7.2+ 1.1+) 070127 349 (2.4+ 1.9+) 921028 801 0.7+ 0.1- 991203 704 (4.2+ 0.6+) 2014/ 921030 411 1.0- 1.5- 991203 704 (4.1+ 0.9+) 140609 W96 0.5+ 0.2+ 921030 411 1.6- 0.4- 991203 704 (4.3+ 1.6+) 140609 W96 1.7+ 0.9+ 921102 033 0.8+ 0.4+ 991208 360 0.3- 0.0 140609 W96 (2.1+ 0.3+) 921102 033 1.3+ 0.6+ 991208 360 0.0 0.1+ 140701 W96 0.5- 0.9+ 921102 033 0.4- 0.1- 991209 699 (6.7+ 2.0+) 140701 W96 0.7- 0.6+ 921102 033 0.3+ 0.8- 991210 349 0.2- 0.6- 140701 W96 0.2+ 0.1+ 921121 411 0.2+ 0.1- 991210 349 0.0 0.2- 140701 W96 1.3+ 0.8+ 921121 411 1.0- 0.6- 991210 349 0.0 0.1- 140711 D95 (3.9- 1.7-) 921124 360 0.6+ 0.1+ 991221 355 0.0 0.4+ 140711 D95 (2.6- 1.9-) 921124 360 0.1+ 0.8- 991221 355 0.5+ 0.6+ 140720 D95 1.8- 1.4+ 921130 360 0.1+ 0.4- 991221 355 0.7+ 0.6+ 140720 D95 1.6- 0.8+ 921130 360 0.0 0.1- 991222 046 0.4- 0.0 140728 349 0.9- 0.7+ 921201 691 0.4+ 0.9- 991222 046 0.8- 0.0 140728 349 0.4- 0.3+ 921201 691 0.1+ 0.6- 991222 046 0.5- 0.2+ 140808 215 1.2- 0.0 921201 691 0.6+ 0.9- 991222 046 0.1- 0.1- 140808 215 0.7- 0.4+ 921218 596 (6.5- 0.0 ) 991222 118 0.2+ 0.6+ 140808 215 1.4- 0.1- 921218 596(10.2- 2.8+) 991222 118 0.2- 0.4+ 140817 C47 0.6- 0.8+ 1999/ 991223 349 0.7- 0.2- 140817 C47 0.3+ 0.2+ 990901 413 0.0 0.7- 991223 349 0.1- 0.2- 140817 C47 0.2- 0.1+ 990901 413 0.1+ 0.8- 991223 349 0.8- 0.4- 140817 C47 0.4- 0.1+ 990914 413 0.0 0.8- 991223 900 0.8- 0.5+ 140817 C47 0.8- 0.9+ 990914 413 0.2+ 0.7- 991223 900 0.1- 0.6+ 140818 C47 0.5- 0.9- 991006 704 0.8- 1.1- 991224 897 0.1- 0.2+ 140818 C47 0.6- 0.3- 991006 704 0.5- 0.2- 991224 897 0.5- 0.1+ 140818 C47 1.2- 0.6+ 991006 704 1.5- 1.0- 991228 351 0.1- 1.0+ 991006 704 1.6- 1.7- 991228 351 0.4+ 1.2- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2014 Aug. 25