Nakano Note (Nakano wa Kangaeru noda) NK 1750 216P/LINEAR (2001 CV8 = 2009 D1)
The following improved orbital elements, by S. Nakano, are from 141 observations 2001-2009. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.75 arc second. See the prediction in NK 819 which is required the delta-T correction = -0.15 day. Epoch = 2008 Oct. 21.0 TT T = 2008 Oct. 10.97589 +/- 0.01698 (m.e.) TT Peri. = 151.59667 +/- 0.00496 Node = 359.89322 +/- 0.00019 (2000.0) Inc. = 9.03505 +/- 0.00009 q = 2.1598773 +/- 0.0000086 AU e = 0.4441373 +/- 0.0000020 a = 3.8856309 +/- 0.0000054 AU n' = 0.12868021 +/- 0.00000027 P = 7.659 +/- 0.0000161 years T = 2001 Feb. 12.27218 TT Epoch = 2001 Feb. 20.0 TT Peri. = 151.42273 e = 0.4451159 Node = 359.95406 (2000.0) a = 3.8782740 AU Inc. = 9.04199 n'= 0.12904653 q = 2.1519924 AU P = 7.638 years The predicted orbit for the 2016 return is as follows: T = 2016 May 30.98235 TT Epoch = 2016 May 12.0 TT Peri. = 151.55032 e = 0.4454503 Node = 359.87462 (2000.0) a = 3.8764273 AU Inc. = 9.04739 n'= 0.12913876 q = 2.1496717 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/ 010215 473 0.6+ 0.8- 010319 704 0.7+ 1.1+ 010201 704 1.9+ 0.8+ 010215 473 0.3+ 1.2- 010319 704 0.1- 0.2+ 010201 704 0.6+ 1.6+ 010215 473 1.1- 0.6- 010319 704 0.7+ 0.2- 010201 704 0.4+ 0.4+ 010216 372 0.6+ 0.5+ 010319 704 0.0 0.6+ 010201 704 1.1- 0.5- 010216 349 0.9- 0.5- 010319 704 1.3+ 0.3+ 010202 704 1.5+ 1.3+ 010216 349 0.5- 1.2- 010319 704 (0.4+ 2.1+) 010202 704 0.6- 0.1+ 010216 349 0.1+ 0.2- 010319 704 0.6- 0.4+ 010202 704 1.5- 0.3- 010217 704 0.7+ 0.0 010319 704 1.2+ 0.4- 010202 704 0.6- 0.2+ 010217 704 0.4- 0.5- 010319 704 1.5- 0.3+ 010203 704 0.4+ 1.4+ 010217 704 0.1- 0.4+ 010319 704 0.2- 0.3+ 010203 704 0.3+ 0.9- 010217 704 0.5+ 1.2+ 010320 402 0.3+ 0.1+ 010203 704 0.5- 0.2+ 010217 704 0.2- 0.2+ 010320 402 0.1- 0.1+ 010203 704 0.6- 0.6- 010219 699 0.4- 0.3+ 010320 402 0.9- 0.7+ 010204 673 0.9- 0.8+ 010219 699 0.1- 0.5+ 010321 402 0.6- 0.4- 010204 673 0.3+ 0.4+ 010219 699 0.1- 0.7+ 010321 402 0.8- 0.8- 010205 682 (2.9+ 0.7-) 010219 699 0.9- 0.7+ 010321 402 (2.1- 0.8+) 010205 682 0.4- 1.1+ 010219 360 0.6+ 0.1- 010326 704 0.1- 0.7+ 010205 704 0.7+ 0.4- 010219 360 0.9+ 0.3- 010326 704 0.8+ 1.1- 010205 704 0.5- 0.2- 010220 704 0.2+ 0.4+ 010326 704 0.6+ 0.1- 010205 704 0.3+ 0.8- 010220 704 0.0 0.4+ 010326 704 0.1+ 0.2- 010205 704 0.2- 0.9- 010220 704 0.5+ 0.1- 010326 704 0.3- 0.1+ 010206 850 0.5- 1.5- 010220 704 0.4+ 0.8- 010329 699 1.1- 0.2+ 010206 850 (3.4+ 0.9-) 010220 348 0.9- 0.9+ 010329 699 0.1+ 0.4- 010210 046 1.9+ 1.0+ 010220 348 1.4- 1.3- 010329 699 0.0 0.1+ 010210 046 0.5+ 1.3+ 010220 903 1.2- 0.4- 010329 699 0.3+ 0.3- 010210 046 0.8+ 0.2- 010220 903 0.9- 0.5- 010329 608 0.3+ 0.1+ 010210 046 0.6+ 1.2+ 010220 903 0.3- 0.9- 010329 608 0.1+ 0.4- 010210 046 0.1- 1.1+ 010222 365 0.1+ 0.7- 010329 608 0.1- 0.4- 010210 046 0.3- 0.2- 010222 365 0.0 1.2- 010330 682 0.1+ 0.7- 010212 322 1.4+ 1.0- 010222 365 0.2- 0.4- 010330 682 1.2+ 0.2- 010212 322 (3.6- 0.6-) 010222 170 1.2- 0.5- 010331 704 0.6+ 0.4+ 010212 322 1.9- 1.2- 010223 170 (2.5- 0.4+) 010331 704 0.0 0.3- 010214 912 (2.8- 1.0+) 010226 322 1.2- 0.8- 010331 704 0.1+ 0.0 010214 912 1.9- 1.3+ 010226 322 1.6- 0.2- 010331 704 0.7- 0.2+ 010214 912 1.4- 0.3+ 010226 322 0.7+ 1.7+ 010331 704 0.4- 0.2+ 010214 349 (2.1- 0.8+) 010226 360 0.7+ 0.0 010416 699 0.5+ 0.1+ 010214 349 1.5+ 0.2+ 010226 360 0.7+ 0.1- 010416 699 0.2- 0.7- 010214 349 0.1- 0.2- 010302 355 0.2+ 0.0 010416 699 1.3+ 0.6- 010214 349 0.8- 0.3+ 010302 355 0.2+ 0.7- 010416 699 0.7+ 0.1+ 010214 611 1.0+ 0.4+ 010302 355 0.6- 0.7- 010422 704 (2.4- 0.3-) 010214 611 0.8+ 0.3- 010303 704 1.3+ 0.0 010422 704 1.3- 0.3+ 010215 106 0.3- 1.5- 010303 704 0.8- 0.9+ 010422 704 1.7- 0.0 010215 106 1.0+ 0.5- 010303 704 0.4+ 0.4+ 010516 360 (0.4+ 3.3-) 010215 106 0.6+ 0.1- 010303 704 0.0 0.1- 010516 360 (0.0 2.9-) 010215 950 0.5+ 0.3+ 010313 608 1.8+ 1.3+ 010516 360 (1.2- 3.7-) 010215 950 0.5+ 0.1+ 010313 608 (2.7+ 2.3+) 2009/ 010215 372 0.0 0.2- 010313 608 1.6+ 1.7+ 090219 291 0.6- 0.2- 010215 473 1.0- 0.6- 010314 118 0.5+ 0.5+ 090219 291 0.4- 0.0 010215 473 0.8- 0.3- 010314 118 0.4+ 0.3+ 090219 291 0.3- 0.1+ 010215 473 1.0- 0.5+ 010314 118 0.4+ 0.4+ 090220 291 1.4+ 0.4+ 010215 473 1.3+ 0.6- 010315 360 0.3+ 0.4+ 090220 291 0.4- 0.1- 010215 473 (2.3+ 0.5-) 010315 360 0.6+ 0.5+ 090220 291 0.1- 0.9- 010215 473 (5.9- 1.8-) 010318 349 (5.7- 0.2-) 010215 473 1.4- 1.1- 010318 349 (4.5- 0.9+) ( ) -------- Rejected Obs.
Managing Director of the Oriental Astronomical Association Syuichi Nakano 2009 Mar. 18