Nakano Note (Nakano wa Kangaeru noda) NK 3160 P/2015 YG1 (NEOWISE)
The following improved orbital elements, by S. Nakano, are from 216 observations 2015 Dec. 17 to 2016 May 5. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.65 arc second. See the previous orbit in NK 3091. Epoch = 2015 Sept.15.0 TT T = 2015 Sept.28.95253 +/- 0.00081 (m.e.) TT Peri. = 102.78622 +/- 0.00090 Node = 350.51177 +/- 0.00014 (2000.0) Inc. = 57.33661 +/- 0.00043 q = 2.0734229 +/- 0.0000226 AU e = 0.8790037 +/- 0.0000090 a = 17.1362575 +/- 0.0000753 AU n' = 0.01389409 +/- 0.00000009 P = 70.937 +/- 0.0004673 years (+/- 0.17 day) The predicted orbit for the 2085 return is as follows: T = 2085 Sept.13.02384 TT Epoch = 2085 Sept. 7.0 TT Peri. = 102.25510 e = 0.8796305 Node = 350.39038 (2000.0) a = 17.1853011 AU Inc. = 57.24709 n'= 0.01383466 q = 2.0685860 AU P = 71.242 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2015/ 160114 850 0.0 0.9- 160214 T05 0.6- 0.7- 151217 C51 1.7+ 0.0 160114 850 0.6- 0.5- 160215 T05 0.9- 1.2+ 151217 C51 0.0 1.0- 160114 850 0.0 1.2- 160215 T05 0.6- 0.0 151218 C51 0.3- 0.4+ 160115 D95 0.4+ 0.3- 160215 T05 0.4- 0.6+ 151218 C51 (2.7+ 0.3-) 160115 D95 0.1+ 0.4- 160215 T05 0.4- 0.0 151218 C51 (0.1- 2.0-) 160115 D95 0.2+ 0.2+ 160216 349 0.4+ 0.2+ 151218 C51 (2.3+ 1.6-) 160116 T05 0.1- 0.1- 160216 349 0.1+ 0.3- 151218 C51 0.4+ 0.6- 160116 T05 0.6- 0.2+ 160216 C23 1.0+ 0.5- 151218 C51 0.4- 0.4+ 160116 T05 1.2+ 0.7+ 160216 C23 0.0 0.5- 151218 C51 0.2+ 1.9- 160116 T05 0.1- 0.6+ 160216 C23 0.0 0.5- 151218 C51 0.3+ 0.7- 160117 213 0.1- 0.3- 160218 D95 0.3- 0.5+ 151218 C51 0.9+ 1.4- 160117 213 0.2- 0.4+ 160218 D95 0.2+ 0.6- 151218 C51 1.3+ 1.4- 160117 213 0.6- 0.4+ 160218 D95 0.1+ 0.6+ 151218 C51 0.6+ 0.3- 160131 G45 0.2- 0.4+ 160226 703 0.0 1.8- 151219 C51 0.1+ 0.2- 160131 G45 0.0 0.4+ 160226 703 0.6+ 0.1- 151219 H01 0.1- 0.8- 160131 G45 0.4- 0.8+ 160226 703 0.6- 0.2- 151219 H01 0.1- 0.6- 160131 G45 0.2- 0.1+ 160226 703 1.9- 0.7- 151219 H01 0.1- 0.5- 160131 G45 0.0 0.6+ 160227 703 1.2- 1.3+ 151219 H01 0.0 0.6- 160131 G45 0.1- 1.9+ 160227 703 0.8- 0.2- 151219 926 0.4- 0.7+ 160131 G45 0.3- 0.8+ 160302 H45 0.3+ 0.2- 151219 H06 0.4- 0.3+ 160131 G45 0.2- 0.6+ 160302 H45 0.2+ 0.2- 151219 H06 0.1+ 0.0 160202 T05 0.0 0.4- 160302 H45 0.1- 0.1- 151219 H06 0.1+ 0.0 160202 T05 0.6+ 0.6+ 160302 H45 0.3- 0.7- 151219 926 0.1- 0.6+ 160202 T05 0.2+ 0.6+ 160302 H45 0.9+ 0.5- 151219 926 0.1- 0.2+ 160202 T05 0.8+ 0.9+ 160302 H45 0.2- 0.5- 151219 900 1.0- 0.2+ 160202 D29 0.1+ 0.5+ 160302 G45 0.4+ 0.3+ 151219 900 0.6- 0.1+ 160202 D29 0.9- 0.5+ 160302 G45 0.2- 1.7+ 151219 900 0.6- 0.1- 160202 D29 0.3- 0.4+ 160302 G45 1.4+ 0.1+ 151219 300 0.6- 0.8+ 160203 D81 1.7+ 1.4- 160302 G45 0.5+ 0.7+ 151219 300 0.4- 0.4+ 160203 D81 0.7+ 1.2+ 160302 900 0.3+ 0.4+ 151219 300 0.5- 0.9+ 160203 K02 0.1- 0.3+ 160302 900 0.7+ 0.0 151219 300 0.5- 0.1+ 160203 K02 0.7+ 0.8+ 160304 T05 0.9- 1.1+ 151220 A71 0.3- 0.3- 160205 850 0.1+ 0.2- 160304 T05 0.9+ 1.6- 151220 A71 0.7- 0.4- 160205 850 0.7+ 0.5- 160304 T05 0.1- 0.3+ 151220 A71 0.3- 0.7- 160205 D95 0.6- 0.4+ 160304 T05 0.6- 0.7- 151220 A71 0.6+ 1.0- 160205 D95 0.7- 0.7+ 160308 K02 0.4- 0.9- 151221 157 0.4+ 0.5- 160205 D95 0.4+ 0.1+ 160308 K02 (1.0+ 2.5+) 151221 157 0.2+ 0.5- 160205 900 0.3+ 0.8+ 160311 H15 0.2+ 0.5+ 151221 157 0.3+ 0.2- 160205 900 0.1+ 0.1- 160311 H15 0.1- 1.1+ 151221 I89 0.0 0.3- 160205 215 0.1+ 0.4- 160311 H15 0.2+ 1.2+ 151221 I89 0.6+ 0.4- 160205 215 0.2+ 0.1- 160313 F51 0.1+ 0.2- 151222 D95 0.5+ 0.5- 160205 215 0.2- 0.6+ 160313 F51 0.2+ 0.2- 151222 D95 0.8+ 0.3- 160205 157 0.1+ 0.6- 160313 F51 0.2+ 0.2- 151222 D95 0.9+ 0.3- 160205 157 0.6+ 0.0 160315 F51 0.0 0.1- 151223 K02 (1.7- 2.7+) 160206 157 0.1+ 0.2- 160315 F51 0.0 0.2- 151223 K02 0.3+ 0.1+ 160206 157 0.2+ 0.3- 160315 F51 0.0 0.3- 151223 K02 0.4+ 0.1- 160207 703 1.9+ 0.5- 160315 F51 0.1+ 0.2- 151226 215 0.3- 0.2- 160207 703 0.7- 0.5+ 160317 G45 0.4+ 0.2- 151226 215 0.2- 0.1- 160207 703 0.5+ 0.5+ 160317 G45 0.6+ 1.6+ 151226 215 0.0 0.1- 160207 703 0.9- 0.9+ 160317 G45 0.6+ 0.3+ 151228 349 0.2- 0.9+ 160209 G45 0.8- 0.9+ 160317 G45 1.2+ 0.2+ 151228 349 0.4- 0.6+ 160209 G45 1.8- 0.7+ 160317 G45 1.6+ 0.3+ 151230 900 0.4+ 0.6- 160209 G45 1.1- 1.7+ 160317 G45 1.1+ 0.4+ 151230 900 0.3+ 0.6- 160209 G45 0.6- 0.3+ 160317 G45 0.1- 0.9+ 151231 D95 0.1- 0.5- 160209 G45 1.1- 0.4+ 160317 G45 0.0 0.3- 151231 D95 0.8- 0.3+ 160209 G45 0.7- 1.9+ 160317 G45 1.1+ 0.7+ 151231 D95 0.7- 0.2- 160209 G45 0.8- 1.3+ 160331 H15 0.2- 0.0 2016/ 160209 G45 1.0- 1.2+ 160331 H15 0.3+ 0.2+ 160102 A71 0.2+ 0.6- 160209 G45 0.7- 0.3+ 160331 H15 (2.4+ 0.1+) 160102 A71 0.1+ 0.2- 160209 T05 0.8- 1.3+ 160403 G45 1.2+ 1.3+ 160103 A77 0.1- 0.9- 160209 T05 0.3- 0.3+ 160403 G45 0.9+ 1.3+ 160103 A77 0.2+ 0.4- 160209 T05 0.1+ 0.4- 160403 G45 1.6+ 0.6+ 160103 A77 0.1+ 0.5- 160209 T05 0.1+ 1.1+ 160403 G45 0.6+ 0.5+ 160104 D81 0.7- 0.9- 160211 D95 0.1+ 0.3- 160403 F51 0.2- 0.2- 160104 D81 1.1- 0.5+ 160211 D95 0.5+ 0.3- 160403 F51 0.3- 0.2- 160108 349 0.1- 0.6+ 160211 D95 0.3+ 0.1+ 160403 F51 0.3- 0.2- 160108 349 0.3+ 0.3+ 160212 G45 1.6- 1.1+ 160403 F51 0.3- 0.2- 160113 H45 0.7+ 0.1- 160212 G45 0.6- 1.0+ 160411 130 0.2- 0.2+ 160113 H45 0.3+ 0.1+ 160212 G45 1.3- 1.3+ 160411 130 0.1+ 0.4- 160113 H45 0.8+ 0.0 160212 G45 0.9- 0.5+ 160425 703 1.1+ 0.7- 160113 H45 1.7+ 0.4- 160212 G45 1.0- 1.4+ 160425 703 0.9+ 0.6- 160113 H45 0.7+ 0.4- 160212 G45 1.0- 1.1+ 160425 703 (2.2+ 0.3-) 160113 H45 0.7+ 0.5- 160214 T05 0.3- 0.1+ 160505 215 1.0+ 0.5+ 160114 850 0.0 0.7- 160214 T05 0.8+ 0.0 160505 215 0.9+ 0.3- 160114 850 0.0 0.5- 160214 T05 0.0 0.4- 160505 215 0.1- 0.2- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2016 May 30