Nakano Note (Nakano wa Kangaeru noda) NK 3964 259P/Garradd
The following improved orbital elements, by S. Nakano, are from 61 observations 2008 to 2017. 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 the previous orbits in NK 1914, NK 2095, NK 2274 and NK 3365. Epoch = 2017 July 26.0 TT T = 2017 Aug. 4.03116 +/- 0.00015 (m.e.) TT Peri. = 257.50393 +/- 0.00012 Node = 51.48430 +/- 0.00009 (2000.0) Inc. = 15.88968 +/- 0.00002 q = 1.8089610 +/- 0.0000010 AU e = 0.3377117 +/- 0.0000004 a = 2.7313799 +/- 0.0000022 AU n' = 0.21833879 +/- 0.00000026 P = 4.514 +/- 0.0000054 years T = 2008 July 25.30553 TT Epoch = 2008 Aug. 2.0 TT Peri. = 256.50826 e = 0.3423346 Node = 51.99538 (2000.0) a = 2.7264062 AU Inc. = 15.90312 n'= 0.21893653 q = 1.7930629 AU P = 4.502 years T = 2013 Jan. 25.43696 TT Epoch = 2013 Jan. 28.0 TT Peri. = 256.55956 e = 0.3409689 Node = 51.96086 (2000.0) a = 2.7277783 AU Inc. = 15.89903 n'= 0.21877136 q = 1.7976908 AU P = 4.505 years The predicted orbit for the 2022 return is as follows: T = 2022 Feb. 8.40606 TT Epoch = 2022 Jan. 21.0 TT Peri. = 257.64665 e = 0.3386714 Node = 51.44992 (2000.0) a = 2.7303256 AU Inc. = 15.89055 n'= 0.21846527 q = 1.8056425 AU P = 4.512 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2008/ 080924 E12 0.0 0.8+ 170426 I11 0.5- 0.0 080715 E12 (2.9- 0.2-) 080924 415 0.3- 0.2+ 170426 I11 0.4- 0.1- 080902 E12 (1.4- 2.2+) 080924 415 0.5- 0.5+ 170429 I11 0.6- 0.1- 080902 E12 (0.8- 3.0+) 080925 E12 0.1+ 0.4+ 170429 I11 0.4- 0.1- 080902 E12 0.8- 1.1+ 080925 E12 0.3- 0.6+ 170429 I11 0.3- 0.2- 080902 E12 (0.8- 2.2+) 080927 423 0.5+ 0.5+ 170429 I11 0.4- 0.2- 080902 E12 0.7- 0.3+ 080927 423 0.1- 1.5+ 170429 I11 0.6- 0.2- 080902 E12 1.2- 0.3+ 080930 423 (0.3- 2.5+) 170429 I11 0.5- 0.3- 080902 E12 0.9- 0.4+ 081001 423 0.7+ 1.2+ 170429 I11 0.4- 0.2- 080902 E12 0.7- 0.5+ 2010/ 170718 Q62 0.0 0.5+ 080902 E12 0.9- 0.2+ 100413 568 (0.3+ 2.0-) 170718 Q62 0.1- 0.5+ 080902 E12 0.9- 0.2+ 2011/ 170718 Q62 0.1- 0.5+ 080902 E16 (0.1+ 2.5-) 110203 568 0.1- 0.7+ 170722 W88 0.8+ 0.2- 080902 E16 (0.9+ 2.6-) 110203 568 0.1- 0.7+ 170722 W88 0.2- 0.6+ 080902 E16 (0.7+ 3.3-) 110205 568 0.0 1.0+ 170812 W96 0.7+ 0.5+ 080902 E16 (0.3+ 2.0-) 110205 568 0.4- 1.1+ 170813 W96 0.8+ 1.2+ 080902 E16 (1.0+ 2.6-) 2012/ 170813 W96 (0.0 2.4+) 080902 E16 0.1+ 1.8- 120414 I33 0.5+ 0.2- 170813 Q62 0.8+ 1.1+ 080902 E16 (0.2+ 2.4-) 120414 I33 0.5+ 0.3- 170813 Q62 0.9+ 1.1+ 080904 I77 0.7- 1.7+ 120415 568 0.7+ 0.1- 170827 Y00 0.2- 1.0+ 080904 I77 (2.2- 1.7+) 120415 568 0.5+ 0.0 170827 Y00 (0.8+ 2.5+) 080909 E12 1.0- 0.1+ 120415 568 0.7+ 0.1- 170827 Y00 0.9+ 1.8+ 080923 F84 (0.9- 2.0+) 2017/ 170921 F51 0.9+ 0.6+ 080923 F84 0.3- 1.4+ 170426 I11 0.4- 0.2- 170921 F51 0.8+ 0.4+ 080923 E12 0.1- 1.0+ 170426 I11 0.6- 0.0 170921 F51 1.0+ 0.5+ 080923 E12 0.1+ 1.0+ 170426 I11 0.6- 0.2+ 170921 F51 0.7+ 0.4+ 080923 E12 0.4+ 0.7+ 170426 I11 0.5- 0.0 080924 F84 0.2- 1.2+ 170426 I11 0.7- 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2019 Dec. 11