Nakano Note (Nakano wa Kangaeru noda) NK 2783 P/2013 P4 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 87 observations 2013 Aug. 15 to 2014 Sept. 21. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.52 arc second. The observations in 2014 September show the residuals of -12" and -6" from an orbit in NK 2601 (= HICQ 2014). Epoch = 2014 Aug. 11.0 TT T = 2014 Aug. 12.39484 +/- 0.05027 (m.e.) TT Peri. = 113.56160 +/- 0.00456 Node = 256.61212 +/- 0.00058 (2000.0) Inc. = 4.26445 +/- 0.00001 q = 5.9670326 +/- 0.0000359 AU e = 0.5959545 +/- 0.0000176 a = 14.7682192 +/- 0.0000439 AU n' = 0.01736648 +/- 0.00000008 P = 56.753 +/- 0.0002531 years (+/- 0.09 day) The predicted orbit for the 2071 return is as follows: T = 2071 Feb. 1.67661 TT Epoch = 2071 Feb. 13.0 TT Peri. = 114.36881 e = 0.6113514 Node = 255.73706 (2000.0) a = 15.3373691 AU Inc. = 4.24840 n'= 0.01640884 q = 5.9608465 AU P = 60.066 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2013/ 130827 Q62 0.1- 0.1+ 131008 C32 0.8- 0.9+ 130815 F51 0.0 0.1+ 130828 W96 0.4- 0.1+ 131008 C32 0.9- 0.8+ 130815 F51 0.1- 0.1+ 130828 W96 0.4- 1.0- 131012 G96 0.4+ 0.1- 130815 F51 0.2+ 0.1+ 130831 474 0.1+ 0.0 131012 G96 0.2- 0.3- 130815 F51 0.0 0.1+ 130831 474 0.3- 0.5+ 131012 G96 0.1+ 0.4- 130816 568 0.1- 0.0 130831 474 0.1+ 0.2+ 131012 G96 0.4+ 0.9- 130816 568 0.1- 0.1+ 130902 G96 0.0 0.7- 131130 Q62 0.4- 0.4- 130816 568 0.1- 0.1+ 130902 G96 0.5- 0.5- 131130 Q62 0.1+ 0.2- 130817 Q62 1.2+ 0.4- 130902 G96 0.3- 0.9- 131130 Q62 0.3+ 0.2- 130817 Q62 1.4+ 0.6- 130902 G96 0.6- 0.4- 131201 130 0.6+ 0.0 130817 Q62 1.8+ 0.6- 130902 Q62 0.0 0.2- 131201 130 1.3+ 0.1- 130819 807 0.2+ 0.9- 130902 Q62 0.0 0.1- 131203 958 1.3+ 1.6- 130819 807 0.2+ 0.9- 130902 Q62 0.1- 0.0 131203 958 0.7- 1.8- 130826 H21 0.2+ 0.3- 130904 215 1.0- 1.5- 2014/ 130826 H21 0.2- 0.4- 130904 215 0.1+ 0.1+ 140703 Q62 0.7- 0.4+ 130826 H21 0.4- 0.5- 130904 215 0.2- 0.4- 140703 Q62 0.2- 0.4+ 130826 H21 0.1+ 0.9- 130904 C10 0.8+ 0.8- 140828 850 0.3- 1.6- 130826 H36 0.8- 0.3- 130904 C10 0.1+ 0.6- 140828 850 0.1- 0.7- 130826 H36 0.2+ 0.5- 130905 A71 0.7- 0.2- 140914 F51 0.1+ 0.2+ 130826 H36 0.9- 1.1+ 130905 A71 0.3- 0.2- 140914 F51 0.0 0.0 130826 Q62 0.2- 0.3- 130909 A71 0.9+ 0.2- 140914 F51 0.1+ 0.2+ 130826 Q62 0.1- 0.2- 130909 A71 0.1+ 0.6- 140914 F51 0.1- 0.1+ 130826 Q62 0.0 0.2- 130925 E07 0.1+ 0.3- 140915 215 0.4+ 0.7- 130826 E10 0.2+ 0.2- 130925 E07 0.3+ 0.4- 140915 215 0.8+ 0.4- 130826 E10 0.1+ 0.2- 130927 F51 0.0 0.6+ 140915 215 0.2+ 0.7- 130826 E10 0.1+ 0.1+ 130927 F51 0.1- 0.2+ 140920 I41 0.3- 0.3- 130826 E10 0.2+ 0.2+ 130927 F51 0.2+ 0.2+ 140920 I41 0.0 0.1- 130826 E10 0.3+ 0.1+ 130927 F51 0.0 0.0 140921 I41 0.0 0.5+ 130827 Q62 0.7+ 0.2- 131008 C32 1.7- 0.8+ 140921 I41 0.1- 0.2- 130827 Q62 0.2+ 0.2- 131008 C32 1.5- 0.7+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2014 Sept. 26