Nakano Note (Nakano wa Kangaeru noda) NK 3091 P/2015 YG1 (NEOWISE)
The following improved orbital elements, by S. Nakano, are from 200 observations 2015 Dec. 17 to 2016 Mar. 17. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.66 arc second. Epoch = 2015 Sept.15.0 TT T = 2015 Sept.28.95276 +/- 0.00194 (m.e.) TT Peri. = 102.78678 +/- 0.00222 Node = 350.51165 +/- 0.00032 (2000.0) Inc. = 57.33700 +/- 0.00095 q = 2.0734398 +/- 0.0000530 AU e = 0.8790124 +/- 0.0000103 a = 17.1376222 +/- 0.0000887 AU n' = 0.01389243 +/- 0.00000011 P = 70.946 +/- 0.0005509 years (+/- 0.20 day) The predicted orbit for the 2085 return is as follows: T = 2085 Sept.16.05129 TT Epoch = 2085 Sept. 7.0 TT Peri. = 102.25606 e = 0.8796318 Node = 350.39045 (2000.0) a = 17.1854452 AU Inc. = 57.24757 n'= 0.01383448 q = 2.0685812 AU P = 71.243 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2015/ 160113 H45 0.8+ 0.0 160211 D95 0.2+ 0.3- 151217 C51 1.6+ 0.1+ 160113 H45 1.8+ 0.4- 160211 D95 0.6+ 0.2- 151217 C51 0.1- 0.9- 160113 H45 0.8+ 0.3- 160211 D95 0.3+ 0.1+ 151218 C51 0.4- 0.5+ 160113 H45 0.7+ 0.5- 160212 G45 1.6- 1.1+ 151218 C51 (2.6+ 0.2-) 160114 850 0.0 0.7- 160212 G45 0.5- 1.0+ 151218 C51 0.2- 1.9- 160114 850 0.0 0.5- 160212 G45 1.3- 1.3+ 151218 C51 (2.3+ 1.6-) 160114 850 0.1+ 0.8- 160212 G45 0.8- 0.5+ 151218 C51 0.3+ 0.6- 160114 850 0.5- 0.5- 160212 G45 1.0- 1.4+ 151218 C51 0.5- 0.4+ 160114 850 0.0 1.2- 160212 G45 0.9- 1.1+ 151218 C51 0.1+ 1.8- 160115 D95 0.4+ 0.3- 160214 T05 0.2- 0.1+ 151218 C51 0.2+ 0.7- 160115 D95 0.2+ 0.4- 160214 T05 0.9+ 0.0 151218 C51 0.8+ 1.3- 160115 D95 0.3+ 0.2+ 160214 T05 0.1+ 0.4- 151218 C51 1.2+ 1.4- 160116 T05 0.1- 0.1- 160214 T05 0.5- 0.7- 151218 C51 0.6+ 0.3- 160116 T05 0.5- 0.2+ 160215 T05 0.9- 1.2+ 151219 C51 0.0 0.2- 160116 T05 1.2+ 0.7+ 160215 T05 0.6- 0.0 151219 H01 0.2- 0.8- 160116 T05 0.1- 0.6+ 160215 T05 0.4- 0.6+ 151219 H01 0.1- 0.5- 160117 213 0.0 0.3- 160215 T05 0.3- 0.0 151219 H01 0.1- 0.5- 160117 213 0.1- 0.4+ 160216 349 0.4+ 0.2+ 151219 H01 0.1- 0.6- 160117 213 0.5- 0.4+ 160216 349 0.2+ 0.3- 151219 926 0.5- 0.8+ 160131 G45 0.1- 0.4+ 160216 C23 1.0+ 0.5- 151219 H06 0.5- 0.4+ 160131 G45 0.0 0.4+ 160216 C23 0.1+ 0.6- 151219 H06 0.0 0.1+ 160131 G45 0.3- 0.8+ 160216 C23 0.0 0.5- 151219 H06 0.0 0.1+ 160131 G45 0.2- 0.1+ 160218 D95 0.3- 0.5+ 151219 926 0.2- 0.6+ 160131 G45 0.0 0.6+ 160218 D95 0.3+ 0.6- 151219 926 0.2- 0.3+ 160131 G45 0.0 1.9+ 160218 D95 0.1+ 0.6+ 151219 900 1.0- 0.3+ 160131 G45 0.2- 0.8+ 160226 703 0.0 1.9- 151219 900 0.7- 0.1+ 160131 G45 0.1- 0.6+ 160226 703 0.6+ 0.1- 151219 900 0.7- 0.1- 160202 T05 0.1+ 0.4- 160226 703 0.6- 0.2- 151219 300 0.7- 0.8+ 160202 T05 0.7+ 0.6+ 160226 703 1.9- 0.8- 151219 300 0.4- 0.4+ 160202 T05 0.3+ 0.6+ 160227 703 1.2- 1.3+ 151219 300 0.5- 0.9+ 160202 T05 0.9+ 1.0+ 160227 703 0.8- 0.2- 151219 300 0.5- 0.2+ 160202 D29 0.2+ 0.5+ 160302 H45 0.3+ 0.2- 151220 A71 0.3- 0.2- 160202 D29 0.9- 0.5+ 160302 H45 0.1+ 0.3- 151220 A71 0.7- 0.3- 160202 D29 0.2- 0.4+ 160302 H45 0.1- 0.1- 151220 A71 0.3- 0.6- 160203 D81 1.8+ 1.4- 160302 H45 0.3- 0.7- 151220 A71 0.6+ 0.9- 160203 D81 0.7+ 1.2+ 160302 H45 0.9+ 0.5- 151221 157 0.4+ 0.4- 160203 K02 0.0 0.3+ 160302 H45 0.2- 0.5- 151221 157 0.2+ 0.4- 160203 K02 0.7+ 0.8+ 160302 G45 0.4+ 0.3+ 151221 157 0.2+ 0.2- 160205 850 0.2+ 0.2- 160302 G45 0.2- 1.7+ 151221 I89 0.1- 0.2- 160205 850 0.8+ 0.5- 160302 G45 1.3+ 0.1+ 151221 I89 0.5+ 0.4- 160205 D95 0.5- 0.5+ 160302 G45 0.5+ 0.6+ 151222 D95 0.5+ 0.4- 160205 D95 0.6- 0.7+ 160302 900 0.3+ 0.4+ 151222 D95 0.7+ 0.3- 160205 D95 0.5+ 0.1+ 160302 900 0.7+ 0.1- 151222 D95 0.9+ 0.2- 160205 900 0.4+ 0.8+ 160304 T05 1.0- 1.1+ 151223 K02 (1.7- 2.7+) 160205 900 0.1+ 0.1- 160304 T05 0.8+ 1.7- 151223 K02 0.2+ 0.2+ 160205 215 0.2+ 0.4- 160304 T05 0.2- 0.2+ 151223 K02 0.3+ 0.1- 160205 215 0.2+ 0.1- 160304 T05 0.6- 0.8- 151226 215 0.3- 0.1- 160205 215 0.2- 0.6+ 160308 K02 0.4- 0.9- 151226 215 0.2- 0.1- 160205 157 0.2+ 0.6- 160308 K02 (0.9+ 2.5+) 151226 215 0.1- 0.1- 160205 157 0.6+ 0.0 160311 H15 0.2+ 0.5+ 151228 349 0.2- 0.9+ 160206 157 0.2+ 0.2- 160311 H15 0.1- 1.1+ 151228 349 0.4- 0.7+ 160206 157 0.3+ 0.3- 160311 H15 0.2+ 1.1+ 151230 900 0.5+ 0.6- 160207 703 1.9+ 0.5- 160313 F51 0.1+ 0.3- 151230 900 0.3+ 0.5- 160207 703 0.6- 0.5+ 160313 F51 0.1+ 0.2- 151231 D95 0.1- 0.4- 160207 703 0.5+ 0.5+ 160313 F51 0.1+ 0.3- 151231 D95 0.8- 0.3+ 160207 703 0.9- 0.9+ 160315 F51 0.0 0.2- 151231 D95 0.6- 0.2- 160209 G45 0.7- 0.9+ 160315 F51 0.1- 0.2- 2016/ 160209 G45 1.8- 0.8+ 160315 F51 0.0 0.3- 160102 A71 0.3+ 0.6- 160209 G45 1.1- 1.7+ 160315 F51 0.0 0.3- 160102 A71 0.1+ 0.1- 160209 G45 0.5- 0.3+ 160317 G45 0.3+ 0.2- 160103 A77 0.1- 0.8- 160209 G45 1.0- 0.4+ 160317 G45 0.5+ 1.5+ 160103 A77 0.2+ 0.3- 160209 G45 0.7- 1.9+ 160317 G45 0.5+ 0.2+ 160103 A77 0.1+ 0.5- 160209 G45 0.8- 1.3+ 160317 G45 1.1+ 0.2+ 160104 D81 0.6- 0.9- 160209 G45 0.9- 1.2+ 160317 G45 1.5+ 0.2+ 160104 D81 1.1- 0.5+ 160209 G45 0.7- 0.3+ 160317 G45 1.1+ 0.3+ 160108 349 0.0 0.6+ 160209 T05 0.8- 1.3+ 160317 G45 0.2- 0.8+ 160108 349 0.3+ 0.3+ 160209 T05 0.3- 0.3+ 160317 G45 0.0 0.3- 160113 H45 0.8+ 0.1- 160209 T05 0.1+ 0.4- 160317 G45 1.0+ 0.6+ 160113 H45 0.3+ 0.1+ 160209 T05 0.1+ 1.1+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2016 Apr. 1