Nakano Note (Nakano wa Kangaeru noda) NK 2509 216P/LINEAR
The following improved orbital elements, by T. Kobayashi, are from 125 observations 2001 to 2009. 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 orbits in NK 819 and NK 1750 (= HICQ 2009/2010). Epoch = 2008 Oct. 21.0 TT T = 2008 Oct. 11.12762 +/- 0.00244 (m.e.) TT Peri. = 151.64240 +/- 0.00091 Node = 359.89164 +/- 0.00010 (2000.0) Inc. = 9.03584 +/- 0.00004 q = 2.1599429 +/- 0.0000055 AU e = 0.4441243 +/- 0.0000015 a = 3.8856581 +/- 0.0000144 AU n' = 0.12867886 +/- 0.00000072 P = 7.659 +/- 0.0000424 years T = 2001 Feb. 12.38909 TT Epoch = 2001 Feb. 20.0 TT Peri. = 151.46836 e = 0.4451017 Node = 359.95252 (2000.0) a = 3.8783064 AU Inc. = 9.04278 n'= 0.12904492 q = 2.1520656 AU P = 7.638 years The predicted orbit for the 2016 return is as follows: T = 2016 May 31.16493 TT Epoch = 2016 May 12.0 TT Peri. = 151.59597 e = 0.4454359 Node = 359.87310 (2000.0) a = 3.8764600 AU Inc. = 9.04817 n'= 0.12913712 q = 2.1497454 AU P = 7.632 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2001/ 010216 372 0.2+ 0.4+ 010319 704 0.4- 0.4+ 010201 704 (2.3+ 0.9+) 010216 349 1.2- 0.6- 010319 704 1.4+ 0.4- 010201 704 (1.1+ 1.7+) 010216 349 0.9- 1.2- 010319 704 1.3- 0.3+ 010201 704 0.9+ 0.5+ 010216 349 0.3- 0.3- 010319 704 0.0 0.3+ 010201 704 0.7- 0.4- 010217 704 0.3+ 0.0 010320 402 0.6+ 0.2+ 010202 704 (1.9+ 1.3+) 010217 704 0.7- 0.5- 010320 402 0.2+ 0.2+ 010202 704 0.2- 0.2+ 010217 704 0.4- 0.3+ 010320 402 0.7- 0.8+ 010202 704 1.1- 0.2- 010217 704 0.1+ 1.2+ 010321 402 0.3- 0.4- 010202 704 0.2- 0.3+ 010217 704 0.6- 0.2+ 010321 402 0.5- 0.7- 010203 704 (0.7+ 1.5+) 010219 699 0.8- 0.2+ 010321 402 (1.7- 0.8+) 010203 704 0.6+ 0.8- 010219 699 0.6- 0.5+ 010326 704 0.6+ 0.9+ 010203 704 0.1- 0.2+ 010219 699 0.6- 0.7+ 010326 704 (1.5+ 0.9-) 010203 704 0.2- 0.5- 010219 699 1.3- 0.6+ 010326 704 1.3+ 0.1+ 010204 673 0.6- 0.8+ 010219 360 0.1+ 0.2- 010326 704 0.8+ 0.0 010204 673 0.6+ 0.5+ 010219 360 0.4+ 0.3- 010326 704 0.4+ 0.3+ 010205 682 (3.1+ 0.6-) 010220 704 0.3- 0.3+ 010329 699 0.3- 0.5+ 010205 682 0.2- 1.1+ 010220 704 0.4- 0.3+ 010329 699 0.9+ 0.1- 010205 704 1.0+ 0.3- 010220 704 0.0 0.2- 010329 699 0.9+ 0.4+ 010205 704 0.3- 0.1- 010220 704 0.1- 0.9- 010329 699 1.2+ 0.1- 010205 704 0.5+ 0.8- 010220 348 1.4- 0.9+ 010329 608 1.1+ 0.4+ 010205 704 0.1+ 0.8- 010220 348 (1.9- 1.3-) 010329 608 0.9+ 0.1- 010206 850 (0.3- 1.5-) 010220 903 (1.6- 0.4-) 010329 608 0.8+ 0.1- 010206 850 (3.6+ 0.9-) 010220 903 1.4- 0.6- 010330 682 1.0+ 0.3- 010210 046 (1.8+ 1.0+) 010220 903 0.8- 0.9- 010330 682 (2.1+ 0.1+) 010210 046 0.4+ 1.3+ 010222 365 0.4- 0.8- 010331 704 (1.6+ 0.7+) 010210 046 0.7+ 0.2- 010222 365 0.5- 1.3- 010331 704 1.0+ 0.0 010210 046 0.5+ 1.2+ 010222 365 0.7- 0.5- 010331 704 1.1+ 0.3+ 010210 046 0.1- 1.1+ 010222 170 (1.7- 0.6-) 010331 704 0.3+ 0.6+ 010210 046 0.4- 0.2- 010223 170 (3.0- 0.3+) 010331 704 0.7+ 0.5+ 010212 322 1.2+ 1.0- 010226 322 (1.7- 0.9-) 010416 699 (2.3+ 1.3+) 010212 322 (3.8- 0.6-) 010226 322 (2.2- 0.3-) 010416 699 (1.5+ 0.5+) 010212 322 (2.1- 1.2-) 010226 322 (0.1+ 1.6+) 010416 699 (3.0+ 0.5+) 010214 912 (3.0- 1.0+) 010226 360 0.1+ 0.1- 010416 699 (2.4+ 1.2+) 010214 912 (2.1- 1.3+) 010226 360 0.2+ 0.2- 010422 704 0.6- 1.2+ 010214 912 (1.6- 0.3+) 010302 355 0.3- 0.1- 010422 704 (0.5+ 1.9+) 010214 349 (2.4- 0.8+) 010302 355 0.3- 0.8- 010422 704 (0.0 1.6+) 010214 349 1.2+ 0.2+ 010302 355 1.1- 0.8- 010516 360 1.1+ 0.3+ 010214 349 0.3- 0.2- 010303 704 0.7+ 0.1- 010516 360 0.7+ 0.7+ 010214 349 1.0- 0.3+ 010303 704 1.3- 0.8+ 010516 360 0.5- 0.1- 010214 611 0.7+ 0.4+ 010303 704 0.1- 0.2+ 2009/ 010214 611 0.5+ 0.3- 010303 704 0.5- 0.2- 090219 291 0.3- 0.3- 010215 106 (0.6- 1.5-) 010313 608 (1.7+ 1.2+) 090219 291 0.1- 0.0 010215 106 0.7+ 0.6- 010313 608 (2.6+ 2.2+) 090219 291 0.0 0.0 010215 106 0.3+ 0.2- 010313 608 (1.5+ 1.7+) 090220 291 1.3+ 0.6+ 010215 950 0.2+ 0.2+ 010314 118 0.5+ 0.4+ 090220 291 0.4- 0.1+ 010215 950 0.2+ 0.1+ 010314 118 0.3+ 0.2+ 090220 291 0.2- 0.7- 010215 372 0.3- 0.3- 010314 118 0.4+ 0.4+ 090326 291 0.2- 0.7- 010215 473 1.3- 0.7- 010315 360 0.3+ 0.3+ 090326 291 0.2- 0.4- 010215 473 1.1- 0.3- 010315 360 0.6+ 0.4+ 090326 291 0.4- 0.3- 010215 473 1.4- 0.5+ 010318 349 (5.5- 0.2-) 090417 291 0.4- 0.7- 010215 473 1.0+ 0.6- 010318 349 (4.3- 0.9+) 090417 291 0.2- 0.7- 010215 473 (1.9+ 0.5-) 010319 704 1.0+ 1.1+ 090417 291 0.6- 0.4- 010215 473 (6.2- 1.8-) 010319 704 0.1+ 0.2+ 090429 A77 0.1- 1.2+ 010215 473 (1.7- 1.1-) 010319 704 0.9+ 0.2- 090429 A77 0.2+ 0.8- 010215 473 0.2+ 0.8- 010319 704 0.2+ 0.6+ 090429 A77 0.3- 1.2- 010215 473 0.0 1.2- 010319 704 (1.5+ 0.3+) 010215 473 1.4- 0.6- 010319 704 (0.6+ 2.1+) ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2013 June 12