Nakano Note (Nakano wa Kangaeru noda) NK 2802 P/LONEOS-Christensen (2005 RV25 = 2014 U5)

The following improved orbital elements, by S. Nakano, are from 106 observations 2005 to 2014. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.79 arc second. The recovery observations show the residuals of -143" and -40" from the prediction in NK 1396 (= HICQ 2014 (= HICQ 2007)) with the delta-T correction = +0.22 day. Epoch = 2015 Oct. 25.0 TT T = 2015 Oct. 28.87765 +/- 0.06613 (m.e.) TT Peri. = 191.82243 +/- 0.01283 Node = 246.86369 +/- 0.00187 (2000.0) Inc. = 9.89911 +/- 0.00035 q = 3.5815342 +/- 0.0001729 AU e = 0.1683383 +/- 0.0000402 a = 4.3064795 +/- 0.0000683 AU n' = 0.11028603 +/- 0.00000263 P = 8.937 +/- 0.0002127 years (+/- 0.08 day) T = 2006 Nov. 7.61669 TT Epoch = 2006 Nov. 1.0 TT Peri. = 191.74803 e = 0.1665069 Node = 246.93567 (2000.0) a = 4.3277693 AU Inc. = 9.88291 n'= 0.10947323 q = 3.6071657 AU P = 9.003 years The predicted orbit for the 2024 return is as follows: T = 2024 Oct. 12.96999 TT Epoch = 2024 Oct. 17.0 TT Peri. = 188.15330 e = 0.1591936 Node = 245.93732 (2000.0) a = 4.4247642 AU Inc. = 9.88819 n'= 0.10589339 q = 3.7203701 AU P = 9.308 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2005/ 051022 703 0.2- 0.7- 051030 704 0.6+ 0.0 050911 699 1.3+ 0.5+ 051022 703 0.6- 0.7+ 051030 704 0.8- 0.7- 050911 699 0.7+ 0.6+ 051022 413 0.0 0.2- 051030 704 0.8- 0.4- 050911 699 0.7+ 1.1- 051022 J95 0.3- 0.8- 051102 704 1.2+ 1.2- 050912 704 0.3+ 1.3+ 051022 J95 0.6+ 0.4- 051102 704 0.5- 0.3- 050912 704 0.1- 0.5- 051022 J95 1.2+ 1.3- 051102 704 1.2- 0.2- 050912 704 0.6- 1.5+ 051023 J77 0.1- 0.1- 051102 704 0.4+ 1.4+ 050912 704 0.3- 1.1+ 051023 J77 0.9- 0.3- 051102 704 0.2- 1.0- 050912 704 1.5- 0.9- 051023 J77 1.5- 0.2- 051107 J76 1.4+ 1.5- 050923 703 0.5- 0.2- 051023 J77 0.9+ 0.7+ 051107 213 0.5+ 0.6- 050923 703 0.9- 0.0 051023 J77 1.5+ 0.3- 051107 213 0.3+ 0.6- 050923 703 1.9- 0.5- 051023 651 0.4+ 0.5- 051107 213 0.5+ 0.5- 050923 703 1.9- 1.1- 051023 673 0.4+ 0.1- 051108 104 0.4+ 1.5- 051001 703 0.7- 0.6- 051023 651 1.2+ 0.3+ 051108 104 0.2+ 0.8- 051001 703 (2.3+ 4.2-) 051023 673 0.6+ 0.2+ 051108 104 (2.1- 1.0-) 051001 703 0.2+ 0.1- 051023 734 0.7+ 0.2- 051118 147 1.5+ 0.4- 051008 704 0.5+ 0.4+ 051023 651 0.5+ 0.1- 051118 147 (2.4+ 3.5-) 051008 704 1.1+ 0.1- 051023 673 0.4+ 0.0 051119 204 0.2- 1.3- 051008 704 0.5+ 0.3- 051023 673 0.2+ 0.2+ 051119 204 1.4+ 0.8- 051008 704 1.0+ 1.2- 051023 734 0.5+ 0.3- 051121 A32 1.2- 1.2- 051008 704 0.1- 0.3- 051023 349 1.2+ 1.3- 051203 349 0.6+ 1.3- 051010 699 0.8+ 0.6- 051023 349 1.0+ 0.9- 051203 349 0.3+ 0.6- 051010 699 0.1+ 0.2- 051024 372 0.7+ 0.5+ 051203 213 1.4+ 0.8- 051010 699 0.9+ 0.1- 051026 699 (0.4- 2.5-) 051203 213 1.4+ 0.8- 051010 699 0.4- 0.8- 051026 699 0.5+ 1.1- 051203 213 1.4+ 0.7- 051014 699 0.0 0.1+ 051026 699 0.4+ 1.0- 051206 D88 1.5+ 0.5+ 051014 699 (2.1+ 0.2+) 051026 699 0.3- 1.4- 051206 D88 (3.5+ 0.3+) 051014 699 1.4- 0.2+ 051026 215 0.1- 0.7+ 2006/ 051014 699 0.5- 1.9- 051027 G96 0.0 0.8+ 060123 215 (2.3+ 2.3+) 051022 703 0.9- 0.5- 051027 G96 0.0 0.7+ 060128 G96 0.1- 0.4+ 051022 703 0.6- 0.0 051027 G96 0.1+ 0.6+ 060128 G96 0.7+ 0.1+ 051022 703 0.1- 0.7- 051027 G96 0.2- 0.8+ 060128 G96 1.0- 1.0- 051022 703 0.4- 0.5- 051027 A32 0.1- 0.7- 060128 G96 0.7- 1.1- 051022 703 (0.1+ 2.5-) 051028 A32 1.0- 0.2+ 2014/ 051022 703 0.1- 1.5- 051028 118 0.0 0.3+ 141022 J04 0.1- 0.7+ 051022 703 0.3- 1.2- 051028 118 0.3- 1.6- 141022 J04 0.4- 1.0+ 051022 703 0.1+ 1.7- 051028 A32 0.0 1.1- 141023 J04 0.1+ 0.9+ 051022 703 0.3- 0.5+ 051028 A32 0.0 1.5- 141117 F65 0.4- 0.5+ 051022 703 0.3- 0.4- 051030 704 0.0 0.6+ 141117 F65 0.2- 0.5+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2014 Nov. 22

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