Nakano Note (Nakano wa Kangaeru noda) NK 1940 236P/LINEAR (2003 UY275 = 2010 K1)
The following improved orbital elements, by S. Nakano, are from 96 observations 2003 to 2010. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.76 arc second. The delta-T correction for NK 1116 (= HICQ 2009/2010) is -0.77 day which were R.A.= +1007" and Decl.= +381" as RunOff values. Epoch = 2010 Sept. 1.0 TT T = 2010 Sept. 8.82095 +/- 0.00157 (m.e.) TT Peri. = 119.33682 +/- 0.00051 Node = 245.67047 +/- 0.00005 (2000.0) Inc. = 16.33202 +/- 0.00007 q = 1.8313510 +/- 0.0000093 AU e = 0.5090998 +/- 0.0000023 a = 3.7305976 +/- 0.0000069 AU n' = 0.13678436 +/- 0.00000038 P = 7.206 +/- 0.0000201 years T = 2003 July 2.08336 TT Epoch = 2003 July 20.0 TT Peri. = 119.38257 e = 0.5087473 Node = 245.75245 (2000.0) a = 3.7285909 AU Inc. = 16.33059 n'= 0.13689480 q = 1.8316803 AU P = 7.200 years The predicted orbit for the 2017 return is as follows: T = 2017 Nov. 20.15595 TT Epoch = 2017 Nov. 23.0 TT Peri. = 119.26649 e = 0.5078334 Node = 245.67117 (2000.0) a = 3.7335120 AU Inc. = 16.33355 n'= 0.13662424 q = 1.8375098 AU P = 7.214 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2003/ 031130 291 1.3- 0.1- 031218 246 0.4- 0.4+ 030927 704 0.3+ 0.7+ 031130 696 0.1+ 0.4- 031218 246 0.2- 0.1+ 030927 704 0.7- 0.5+ 031130 291 0.9- 0.3- 031218 246 0.8+ 0.1- 030927 704 (4.8- 0.2-) 031130 291 1.2+ 0.6- 031218 246 0.6+ 0.2- 031005 704 1.0- 0.2+ 031130 691 0.0 0.3- 031218 246 0.4+ 0.9+ 031005 704 0.6+ 0.3+ 031130 691 0.2+ 0.6- 031219 704 1.3- 0.2+ 031005 704 1.4+ 1.3+ 031130 691 0.0 0.3- 031219 704 1.2+ 0.2- 031029 704 1.7+ 1.7+ 031201 704 1.8+ 0.1- 031219 704 0.8- 0.1- 031029 704 (2.1+ 1.2+) 031201 704 0.6+ 0.1+ 031219 704 0.3+ 0.6+ 031029 704 0.3+ 0.0 031201 704 0.8+ 1.0+ 031219 704 (2.0+ 1.2-) 031029 704 0.3- 1.7+ 031206 204 0.3+ 0.1- 031220 104 0.4- 0.1+ 031029 704 0.3+ 0.4- 031206 204 0.6- 0.1+ 031220 104 0.5+ 1.1- 031102 704 0.5+ 0.7- 031206 204 1.3+ 0.7- 031220 104 0.3+ 0.5+ 031102 704 0.5- 1.6- 031211 620 0.4- 0.0 031220 104 0.4- 1.2+ 031102 704 0.4- 0.3- 031211 620 0.2- 0.2- 031220 104 0.3+ 0.7- 031102 704 1.4- 0.2+ 031212 620 0.2+ 0.2- 031221 704 1.4+ 0.9- 031118 644 0.9+ 0.7- 031212 620 0.5+ 0.6- 031221 704 0.6+ 1.5+ 031118 644 0.4- 0.6- 031212 213 0.2- 1.8- 031221 704 0.1- 0.7+ 031118 644 1.0- 0.4- 031212 213 0.4+ 0.9- 031221 704 0.8+ 0.9+ 031121 704 0.6- 0.2- 031212 213 0.4+ 0.5- 031228 360 0.1- 0.0 031121 704 1.5- 0.2- 031214 691 0.1- 0.3- 031228 360 1.4+ 1.3+ 031121 704 0.6- 0.5- 031214 691 0.1- 0.1+ 031228 360 0.4+ 0.6+ 031121 704 0.9- 0.2- 031214 691 0.4- 0.3- 2010/ 031121 704 1.2- 0.1- 031214 372 0.8+ 0.5+ 100518 H06 (2.9+ 3.1+) 031123 704 1.2+ 0.4- 031216 703 0.2+ 1.4+ 100518 H06 (1.9+ 3.1+) 031123 704 0.3- 0.3- 031216 703 0.2+ 1.5+ 100518 H06 0.5+ 1.6+ 031123 704 0.1- 0.2- 031216 703 (4.6- 0.8+) 100520 291 0.1- 0.1- 031123 704 1.1- 0.4- 031216 703 1.3- 0.6- 100520 291 0.9- 0.0 031123 704 0.7- 0.0 031216 372 1.3+ 1.2+ 100520 291 0.9- 0.3- 031123 704 1.8- 0.2- 031216 372 1.3+ 1.3+ 100521 291 0.1- 0.6+ 031123 704 0.6- 0.6- 031217 699 1.8- 0.5+ 100521 291 0.1+ 0.9- 031123 704 0.4- 0.8- 031217 699 0.5- 0.9+ 100521 291 0.2- 0.9+ 031123 704 0.2- 1.0- 031217 699 0.5+ 0.8+ 100613 A77 0.3+ 0.5- 031123 704 0.1- 1.4- 031217 699 0.2+ 0.8+ 100613 A77 0.8+ 0.3- 031130 696 0.1- 0.4- 031218 246 0.1+ 0.4+ ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2010 June 17