Nakano Note (Nakano wa Kangaeru noda) NK 3715 P/2018 L5 (Leonard)

The following improved orbital elements, by S. Nakano, are from 162 observations 2018 June 8 to Oct. 15. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.58 arc second. See the previous orbit in NK 3700. Epoch = 2018 May 2.0 TT T = 2018 May 4.44371 +/- 0.00454 (m.e.) TT Peri. = 93.62137 +/- 0.00208 Node = 219.16082 +/- 0.00063 (2000.0) Inc. = 2.20907 +/- 0.00002 q = 2.3032284 +/- 0.0000152 AU e = 0.3645244 +/- 0.0000130 a = 3.6244168 +/- 0.0000777 AU n' = 0.14283902 +/- 0.00000459 P = 6.900 +/- 0.0002218 years (+/- 0.08 day) The predicted orbit for the 2025 return is as follows: T = 2025 Apr. 4.34026 TT Epoch = 2025 Mar. 26.0 TT Peri. = 93.92816 e = 0.3637114 Node = 219.02848 (2000.0) a = 3.6286089 AU Inc. = 2.20936 n'= 0.14259156 q = 2.3088426 AU P = 6.912 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2018/ 180701 I52 (2.0- 0.6-) 180913 I52 0.4- 0.1- 180608 I41 1.0+ 1.2+ 180709 215 1.9- 0.4- 180913 I52 0.0 0.0 180608 I41 (2.3+ 1.3+) 180709 215 (2.1- 0.8-) 180913 I52 0.9- 0.9- 180613 I41 1.4+ 0.4- 180709 215 (2.4- 0.2-) 180917 T05 0.3+ 0.4+ 180613 I41 0.4+ 1.0+ 180713 F51 0.1+ 0.4+ 180917 T05 0.1- 0.4+ 180614 G96 0.7+ 0.3+ 180713 F51 0.0 0.0 180917 T05 0.4- 0.6+ 180614 G96 0.2- 0.0 180713 F51 0.0 0.1- 180917 T05 0.2+ 0.5+ 180614 G96 0.8+ 0.2+ 180719 F52 0.1- 0.2- 180917 T05 0.1- 0.5+ 180614 G96 0.1+ 0.5+ 180719 F52 0.0 0.1- 180917 T05 0.0 0.4- 180615 H36 0.1- 0.3- 180719 F52 0.0 0.2- 180917 T05 0.0 0.3+ 180615 H36 0.3- 0.2+ 180719 F52 0.0 0.2- 180917 T05 0.1- 0.1+ 180615 H36 0.2+ 0.9- 180812 A71 0.2- 0.5- 180918 703 1.6- 0.8+ 180615 Q62 0.7+ 0.8+ 180812 A71 0.3+ 0.5- 180918 703 (2.1- 0.1-) 180615 Q62 1.0+ 0.7+ 180813 A71 0.4+ 0.1- 180918 703 1.9- 0.7+ 180615 Q62 0.8+ 0.7+ 180813 F51 0.4+ 0.0 180918 703 1.5- 0.6+ 180615 Q62 0.5+ 0.7+ 180813 F51 0.0 0.1- 180919 T08 0.1- 0.9+ 180616 W96 0.3+ 0.5- 180813 F51 0.4+ 0.0 180919 T08 0.3+ 0.8- 180616 W96 0.2+ 0.0 180813 F51 0.1+ 0.1- 180919 T08 0.6- 0.0 180616 W96 0.6- 0.2+ 180818 461 0.1- 0.1+ 180919 T08 0.6- 0.4+ 180616 W96 0.4+ 0.7+ 180818 461 0.5- 0.1+ 180921 461 0.1+ 0.4+ 180617 G40 1.1- 0.2+ 180818 461 0.6- 0.3+ 180921 461 0.1+ 0.1+ 180617 G40 0.3- 1.2- 180819 461 0.3- 0.4+ 180929 703 0.9- 0.5- 180617 691 0.8+ 0.6+ 180819 461 0.1- 0.2+ 180929 703 0.9+ 0.1+ 180617 691 0.6- 1.0- 180819 461 0.2- 0.1+ 180929 T05 0.3- 0.6- 180617 691 0.1+ 0.6+ 180821 J22 0.7- 1.0+ 180929 T05 0.3+ 0.4+ 180618 I47 0.8+ 1.3- 180821 J22 0.5- 0.4- 180929 T05 0.2- 0.5+ 180618 I47 0.2+ 0.9- 180821 J22 0.3- 0.8- 180929 T05 0.5+ 0.1+ 180618 I52 0.2- 0.4+ 180821 F51 0.2+ 0.1+ 181001 J22 0.3+ 0.2+ 180618 I52 0.0 0.9+ 180821 F51 0.1+ 0.0 181001 J22 0.3+ 0.2+ 180618 I52 0.4+ 0.1- 180821 F51 0.4+ 0.1+ 181001 J22 0.1+ 0.3+ 180618 I52 0.2- 0.2- 180821 F51 0.2+ 0.1+ 181003 T05 0.3+ 0.1+ 180619 I52 0.6+ 0.2+ 180901 703 0.4- 0.7+ 181003 T05 0.2+ 1.9- 180619 I52 0.1+ 0.1- 180901 703 0.5- 0.2+ 181003 T05 0.6- 0.2+ 180619 I52 1.2- 0.1+ 180901 703 1.1- 0.3+ 181003 T05 0.4- 0.3+ 180619 I52 0.0 0.5- 180902 V03 0.9- 0.5+ 181004 F52 0.2+ 0.0 180621 L01 0.3- 0.3+ 180902 V03 0.8- 0.4+ 181004 F52 0.3+ 0.0 180621 L01 0.2+ 0.0 180902 V03 0.2+ 0.3+ 181004 F52 0.2+ 0.0 180621 L01 0.1- 0.8- 180902 V03 0.3+ 0.1+ 181004 F52 0.3+ 0.0 180621 I52 0.5- 0.2+ 180904 J22 0.4+ 0.1+ 181006 G96 (1.4+ 2.3+) 180621 I52 0.7- 0.9- 180904 J22 0.9+ 0.3+ 181006 G96 0.5+ 0.7+ 180621 I52 0.5- 0.3- 180904 J22 0.4+ 0.1+ 181006 G96 0.9+ 1.0+ 180621 I52 0.5- 1.1- 180907 703 0.5- 0.2+ 181006 G96 0.5+ 0.3+ 180622 291 1.1- 0.4+ 180907 703 1.6- 1.2- 181009 461 0.3+ 0.1+ 180622 291 0.5+ 0.8+ 180907 703 1.9- 0.6- 181009 461 0.2- 0.1+ 180622 291 1.0- 0.2+ 180907 703 (2.9- 1.3-) 181009 461 0.0 0.3+ 180622 I52 0.6- 0.4- 180908 D29 0.9- 0.0 181011 J22 0.2+ 0.0 180622 I52 0.7- 0.5- 180908 D29 0.7- 0.3+ 181011 J22 0.0 0.1+ 180622 I52 0.9- 0.4- 180908 D29 (2.0- 0.3-) 181011 J22 0.1- 0.1+ 180623 I52 0.7- 0.3- 180911 Q62 0.1+ 0.1+ 181015 F52 0.0 0.1- 180623 I52 0.1- 0.0 180911 Q62 0.5+ 0.2- 181015 F52 0.2- 0.4- 180623 I52 0.8- 0.5- 180912 G96 1.2- 0.6- 181015 F52 0.0 0.1- 180623 I52 0.8- 0.1- 180912 G96 1.7- 0.4- 181015 F52 0.1- 0.2+ 180625 I52 1.9+ 1.7+ 180912 G96 0.8- 0.3- 181015 T05 0.2+ 0.1- 180625 I52 1.0+ 0.3+ 180912 G96 0.4- 0.1- 181015 T05 0.0 1.0+ 180625 I52 0.7- 0.4+ 180912 703 (3.1- 0.0 ) 181015 T05 0.3- 0.2+ 180625 I52 0.7- 0.2+ 180912 703 1.9- 0.3- 181015 T05 0.5+ 0.8- 180701 I52 0.6- 0.5- 180912 703 0.3- 0.4- 180701 I52 0.7- 0.1+ 180913 I52 0.1+ 0.2+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2018 Nov. 21

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