Nakano Note (Nakano wa Kangaeru noda) NK 1985 P/2009 K1 (Gibbs)
The following improved orbital elements, by S. Nakano, are from 121 observations 2009 Apr. 24 to Sept. 18. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.67 arc second. See an orbit on HICQ 2009/2010. Epoch = 2009 June 18.0 TT T = 2009 June 25.91644 +/- 0.00032 (m.e.) TT Peri. = 27.06421 +/- 0.00033 Node = 172.79221 +/- 0.00029 (2000.0) Inc. = 5.74661 +/- 0.00004 q = 1.3229459 +/- 0.0000042 AU e = 0.6397158 +/- 0.0000188 a = 3.6719504 +/- 0.0000524 AU n' = 0.14007443 +/- 0.00000300 P = 7.036 +/- 0.0001506 years (+/- 0.06 day) The predicted orbit for the 2016 return is as follows: T = 2016 July 24.37475 TT Epoch = 2016 July 31.0 TT Peri. = 27.43233 e = 0.6371141 Node = 172.77092 (2000.0) a = 3.6919166 AU Inc. = 5.74395 n'= 0.13893967 q = 1.3397446 AU P = 7.094 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2009/ 090518 213 0.4- 0.4+ 090730 D25 0.3+ 0.6+ 090424 G96 0.2+ 0.1+ 090518 213 0.6- 0.5+ 090731 D25 0.6+ 0.2- 090424 G96 0.4+ 0.1- 090519 673 0.2- 0.3+ 090731 D25 0.4+ 0.3- 090424 G96 1.1+ 0.1+ 090519 673 1.1- 0.7+ 090731 D25 0.4+ 0.2- 090424 G96 0.9+ 0.0 090519 673 0.3- 0.6+ 090731 A77 (7.1+ 1.3-) 090516 G96 1.1+ 1.1- 090519 673 0.1- 0.5+ 090731 A77 (4.6- 1.2-) 090516 G96 0.4- 0.5- 090519 585 1.2- 0.9+ 090731 A77 (2.3+ 1.2-) 090516 G96 0.0 0.3- 090519 585 0.1- 0.1+ 090801 D25 0.9- 1.2+ 090516 G96 0.2- 0.2- 090519 585 0.1- 0.4- 090801 D25 1.4+ 1.4+ 090516 G96 0.3- 0.1- 090519 585 0.1- 1.0+ 090802 D90 1.4- 0.4+ 090516 G96 0.1+ 0.1- 090519 585 0.6- 0.2+ 090802 D90 1.3- 0.5+ 090516 G96 0.0 0.5+ 090519 204 0.4- 0.9+ 090802 D90 1.4- 0.8+ 090516 G96 0.7- 0.3- 090520 J47 0.5+ 0.1- 090803 D90 1.2- 0.6+ 090517 G96 0.0 0.3+ 090520 J47 0.4+ 0.1- 090803 D90 1.6- 0.5+ 090517 G96 0.1- 0.0 090520 J47 0.7+ 0.0 090803 D25 0.5+ 0.6+ 090517 G96 0.8- 0.2+ 090523 204 0.1+ 0.8+ 090803 D25 1.7+ 0.2+ 090517 G96 0.3- 0.1+ 090524 215 0.9+ 0.6- 090803 D25 1.1+ 0.1- 090517 G96 0.0 0.0 090524 J47 0.5+ 0.1+ 090806 D90 0.9- 0.8+ 090517 G96 0.6- 0.0 090524 J47 0.3+ 0.5- 090806 D90 0.6+ 0.0 090517 G96 0.7- 0.0 090524 J47 0.3+ 1.6- 090814 D90 0.8+ 0.2+ 090517 G96 0.1+ 0.1+ 090526 703 0.2+ 1.0- 090814 D90 0.1- 0.2+ 090517 B03 1.8+ 0.5- 090526 703 0.2- 0.8+ 090814 D90 0.3- 0.2- 090517 595 0.2- 0.1- 090527 A77 0.8- 1.1+ 090815 349 1.3+ 0.7- 090517 B03 0.9- 0.4- 090601 J47 1.6+ 0.6+ 090815 349 0.8+ 0.4- 090517 B03 0.8+ 0.7+ 090601 J47 0.7+ 0.4- 090815 349 0.6+ 0.3- 090517 595 0.4+ 0.8+ 090601 J47 0.8+ 1.3- 090818 D90 0.5+ 0.3+ 090517 B03 0.3- 0.5- 090612 204 0.5- 0.5- 090818 D90 0.3+ 0.3+ 090518 H55 0.5- 0.2- 090612 204 0.7- 0.2- 090818 D90 0.2+ 0.4+ 090518 H55 0.1- 0.2- 090624 703 0.4- 0.9- 090825 D25 0.6+ 0.4- 090518 H55 0.4- 0.0 090624 703 1.9+ 1.8- 090825 D25 0.7+ 0.4- 090518 G96 0.0 0.0 090624 703 1.4+ 1.1- 090827 D25 0.5+ 0.5+ 090518 G96 0.6- 0.2+ 090624 703 1.6+ 1.5- 090829 D25 0.4+ 0.8- 090518 G96 0.3- 0.3+ 090708 H06 1.1- 0.9- 090829 D25 0.8- 0.4- 090518 G96 0.0 0.5+ 090724 H10 1.7- 0.2+ 090905 D90 (2.6- 0.3-) 090518 G96 0.3- 0.0 090724 H10 0.8- 0.2- 090905 D90 (2.5- 0.1+) 090518 G96 0.4- 0.1- 090724 H10 1.3- 0.2- 090907 D90 1.4- 0.2- 090518 G96 0.0 0.3+ 090728 A77 0.4+ 0.2- 090907 D90 1.3- 0.0 090518 G96 0.2- 0.1+ 090728 A77 0.6+ 0.3- 090907 D90 1.3- 0.3+ 090518 G96 0.2- 0.0 090728 A77 (2.1- 1.1-) 090911 E12 0.1+ 0.7- 090518 G96 0.3+ 0.2- 090730 H10 0.4- 0.2- 090914 D25 0.6+ 0.6+ 090518 G96 0.4- 0.0 090730 H10 0.7- 0.1+ 090914 D25 1.1+ 0.0 090518 G96 0.0 0.3- 090730 D25 0.7+ 0.1+ 090918 D25 0.0 0.7- 090518 213 0.2- 0.3+ 090730 D25 0.3+ 0.2+ ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2010 Oct. 11