Nakano Note (Nakano wa Kangaeru noda) NK 2578 P/2013 C2 (Tenagra)
The following improved orbital elements, by S. Nakano, are from 100 observations 2013 Feb. 14 to Nov. 13. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.55 arc second. See an orbit in HICQ 2013. Epoch = 2015 Sept.15.0 TT T = 2015 Sept. 1.35047 +/- 0.55152 (m.e.) TT Peri. = 308.89075 +/- 0.02711 Node = 247.52323 +/- 0.00153 (2000.0) Inc. = 21.33929 +/- 0.00005 q = 9.1281248 +/- 0.0007823 AU e = 0.4319750 +/- 0.0001265 a = 16.0699347 +/- 0.0002386 AU n' = 0.01529970 +/- 0.00000034 P = 64.420 +/- 0.0014347 years (+/- 0.52 day) The predicted orbit for the 2079 return is as follows: T = 2079 Feb. 28.66029 TT Epoch = 2079 Feb. 11.0 TT Peri. = 309.24195 e = 0.4290924 Node = 247.49280 (2000.0) a = 15.9929527 AU Inc. = 21.34528 n'= 0.01541030 q = 9.1304985 AU P = 63.958 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2013/ 130216 926 0.5- 0.5- 130301 D90 0.2- 0.8+ 130214 926 0.1+ 0.8+ 130216 I93 0.3- 0.6+ 130301 D90 0.8+ 0.5+ 130214 926 1.1+ 0.1- 130216 I93 0.0 0.2- 130306 E07 0.2- 0.2- 130214 926 0.6+ 0.4- 130217 I93 0.0 0.5- 130306 E07 0.3- 0.2- 130214 B74 0.1+ 0.1- 130217 448 1.0+ 0.1+ 130308 E07 0.5- 0.3+ 130214 B74 0.2- 0.1- 130217 926 0.4- 0.7+ 130308 E07 0.4- 0.4- 130214 J95 0.2- 0.1- 130217 448 0.1- 0.0 130329 D90 0.2+ 0.1- 130214 B74 0.2- 0.1- 130217 448 0.0 0.2- 130329 D90 0.4+ 0.0 130215 J95 0.1+ 0.4+ 130217 926 0.3- 0.1+ 130329 D90 0.2- 0.2- 130215 B74 0.1- 0.2- 130217 850 1.7- 1.8+ 130331 E07 0.5- 0.2- 130215 W85 0.2+ 0.3- 130217 926 0.6+ 0.1- 130331 E07 0.1- 0.3- 130215 W85 0.1+ 0.3- 130217 850 1.0- 0.7+ 130401 H45 0.6+ 0.2+ 130215 W85 0.3+ 0.3- 130217 850 0.2- 0.1- 130401 H45 0.7+ 0.1- 130215 W85 0.1+ 0.3- 130217 E23 1.5- 1.1- 130401 H45 0.6+ 0.3- 130215 W85 0.2+ 0.2- 130217 E23 0.5- 0.4- 130401 H45 0.8+ 0.5- 130215 W85 0.2+ 0.2- 130217 E23 0.5+ 0.1+ 130401 H45 0.9+ 0.9- 130215 926 0.0 0.3+ 130217 E23 1.0- 0.4- 130402 926 0.5- 0.2- 130215 W85 0.2+ 0.3- 130217 E23 1.2- 0.1- 130402 926 0.4- 0.1+ 130215 926 0.3+ 0.3- 130218 C10 0.2+ 0.1+ 130402 926 1.2- 0.6+ 130215 926 0.5+ 0.3+ 130218 C10 0.1- 0.1- 130406 A32 0.1- 0.0 130215 926 0.1- 0.1- 130218 926 0.3- 0.2- 130406 A32 0.7+ 1.6+ 130215 926 0.7+ 0.4- 130218 926 0.2- 0.1- 130406 A32 1.5+ 1.6+ 130215 926 0.3+ 0.5- 130218 926 0.2- 0.1- 130412 E07 0.3+ 0.3- 130215 H06 0.8+ 0.4- 130219 926 0.3+ 0.4- 130412 E07 0.3- 0.5- 130215 H06 0.1+ 0.4- 130219 926 0.5+ 0.2+ 130415 215 (1.0- 2.2+) 130215 D90 0.1+ 0.0 130219 926 0.3+ 0.4+ 130415 215 0.4- 0.7+ 130215 D90 0.1- 0.1- 130220 Q62 0.4+ 0.2- 130415 215 1.1- 0.2- 130215 D90 0.0 0.0 130220 Q62 0.4- 0.3- 130603 E07 0.4+ 0.1+ 130216 291 0.1- 0.3- 130220 Q62 0.0 0.3- 130603 E07 0.4+ 0.4- 130216 291 0.3+ 0.1+ 130220 Q62 0.3+ 0.4+ 130702 W96 1.1+ 0.5+ 130216 H06 0.5- 0.2- 130220 Q62 0.5+ 0.2+ 130702 W96 1.5- 1.4+ 130216 H06 1.7- 0.5- 130224 349 1.2+ 0.2+ 131113 Q62 0.2- 0.1- 130216 H06 0.1- 0.1- 130224 349 0.4+ 1.3+ 131113 Q62 0.2- 0.4- 130216 926 0.8- 0.2+ 130301 D90 0.2+ 0.7+ 131113 Q62 0.2+ 0.7- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2013 Nov. 19