Nakano Note (Nakano wa Kangaeru noda) NK 3656 320P/McNaught

The following improved orbital elements, by T. Kobayashi, are from 114 observations 2004 to 2015. 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 1143 and NK 2891. Epoch = 2015 Aug. 6.0 TT T = 2015 Aug. 7.31049 +/- 0.00004 (m.e.) TT Peri. = 0.74287 +/- 0.00014 Node = 295.94927 +/- 0.00015 (2000.0) Inc. = 4.89976 +/- 0.00001 q = 0.9770098 +/- 0.0000002 AU e = 0.6845464 +/- 0.0000001 a = 3.0971582 +/- 0.0000007 AU n' = 0.18082521 +/- 0.00000006 P = 5.451 +/- 0.0000019 years T = 2004 Aug. 30.20463 TT Epoch = 2004 Aug. 23.0 TT Peri. = 0.59671 e = 0.6819235 Node = 296.01307 (2000.0) a = 3.1075402 AU Inc. = 4.88989 n'= 0.17991979 q = 0.9884356 AU P = 5.478 years [ T = 2010 Feb. 21.13123 TT Epoch = 2010 Feb. 13.0 TT Peri. = 0.68341 e = 0.6825057 Node = 295.96958 (2000.0) a = 3.1044628 AU Inc. = 4.89322 n'= 0.18018739 q = 0.9856493 AU P = 5.470 years ] The predicted orbit for the 2021 return is as follows: T = 2021 Jan. 17.14195 TT Epoch = 2021 Jan. 26.0 TT Peri. = 0.77633 e = 0.6857664 Node = 295.93010 (2000.0) a = 3.0941217 AU Inc. = 4.90893 n'= 0.18109146 q = 0.9722771 AU P = 5.443 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2004/ 040918 587 1.2+ 0.4+ 150613 C51 1.2+ 1.6- 040902 E12 1.1- 0.1- 040918 587 1.7- 0.6+ 150614 C51 0.4+ 0.8- 040902 E12 0.4+ 0.2+ 041017 587 (2.7+ 0.3-) 150614 C51 0.3+ 0.6- 040902 E12 1.5+ 0.5- 041017 587 (2.8+ 0.9-) 150614 C51 0.0 0.5- 040902 E12 0.2+ 0.1- 041106 413 1.1- 0.8- 150614 C51 0.6+ 0.2- 040904 413 0.6+ 0.9- 041107 413 1.5- 0.9- 150614 C51 0.3+ 1.0- 040904 413 1.0+ 0.4- 041109 413 0.9- 1.1- 150614 C51 0.2+ 0.6+ 040904 413 0.6- 0.3- 2015/ 150614 C51 (2.2+ 7.1-) 040904 413 0.3- 0.5- 150418 W84 0.2+ 0.1+ 150614 C51 1.2- 0.1+ 040905 413 0.2- 0.5- 150418 W84 0.1+ 0.2+ 150815 G40 1.5+ 0.8+ 040905 413 0.2+ 0.0 150418 W84 0.3+ 0.1+ 150815 G40 1.2+ 0.2+ 040906 673 1.2+ 0.9- 150418 W84 0.2+ 0.2+ 150904 Q62 0.6- 0.3+ 040906 673 1.1+ 1.0- 150419 W84 0.1- 0.2+ 150904 Q62 0.7- 0.7+ 040906 673 1.1- 0.4- 150419 W84 0.1+ 0.3+ 150904 Q62 0.6- 0.5+ 040906 673 0.6+ 0.2- 150420 W84 0.1- 0.2+ 150904 G40 0.4- 0.0 040906 673 0.4+ 0.1- 150420 W84 0.1+ 0.2+ 150904 G40 0.4+ 0.7- 040906 673 0.4+ 0.4- 150420 291 0.3- 0.4+ 150904 G40 0.1+ 0.5- 040906 E14 1.8+ 0.4- 150420 291 0.1- 0.6+ 150908 G40 0.2- 0.4- 040906 E14 0.0 1.4- 150420 291 0.3- 0.5+ 150908 G40 0.1- 0.1- 040906 E14 0.6+ 0.6- 150420 W84 0.2+ 0.3+ 150908 G40 0.4- 0.2- 040906 E14 0.2+ 0.5- 150420 W84 0.1+ 0.3+ 150908 G40 0.4- 0.3- 040906 413 0.1+ 0.4- 150420 W84 0.2+ 0.2+ 150909 215 0.2+ 0.8+ 040906 413 0.1+ 0.4- 150420 W84 0.4+ 0.3+ 150909 215 0.1+ 0.6+ 040911 651 0.9+ 0.7+ 150421 W84 0.6+ 0.3+ 150909 215 0.2- 0.2+ 040911 651 0.9- 0.5+ 150421 291 0.1+ 0.3+ 151001 A71 1.7- 0.1- 040911 651 0.7+ 0.3- 150421 291 1.5- 0.2+ 151001 A71 0.8+ 1.0- 040913 360 0.6- 0.1+ 150421 291 0.9- 0.6+ 151002 G45 0.3- 0.2- 040913 360 0.9+ 0.1- 150421 W84 0.1+ 0.0 151002 G45 0.2- 0.2+ 040913 360 0.4- 0.6- 150421 W84 0.3+ 0.2+ 151002 G45 0.2- 0.4+ 040914 651 1.4+ 0.2+ 150421 W84 0.1+ 0.2+ 151002 G45 1.0- 0.0 040914 651 0.5+ 1.8- 150421 W84 0.1+ 0.3+ 151002 G45 1.2- 0.2+ 040916 E12 1.8- 1.1+ 150422 W84 0.1+ 0.2+ 151003 A71 1.2+ 0.9+ 040916 E12 1.4- 0.6- 150423 695 0.1+ 0.1+ 151003 A71 0.0 0.0 040916 E12 0.6+ 0.2- 150423 695 0.2+ 0.4+ 151005 Q62 0.6+ 0.0 040916 E12 1.1- 0.6+ 150423 695 0.2- 0.1+ 151005 Q62 1.0+ 0.0 040916 E12 (2.6+ 1.0-) 150423 568 0.4- 0.3+ 151005 Q62 1.2+ 0.0 040916 E12 (2.6+ 1.2-) 150423 568 0.4- 0.3+ 151010 703 0.4+ 1.4+ 040916 E12 (3.0+ 0.0 ) 150428 568 0.3- 0.3+ 151010 703 1.6+ 1.5+ 040916 E12 (2.9+ 0.5-) 150428 568 0.2- 0.3+ 151010 703 (0.9- 2.2-) 040917 J87 1.2+ 0.4- 150520 568 0.2- 0.1+ 151010 703 0.2+ 0.9+ 040917 J87 0.9+ 0.7+ 150520 568 0.1- 0.0 040918 587 0.5- 0.1+ 150613 C51 0.2- 0.1- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2018 Aug. 3

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