Nakano Note (Nakano wa Kangaeru noda) NK 4749 349P/Lemmon

The following improved orbital elements, by S. Nakano, are from 112 observations 2010 to 2018. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.59 arc second. See the previous orbit in NK 3289 (= HICQ 2017). Epoch = 2017 Sept. 4.0 TT T = 2017 Aug. 26.73955 +/- 0.00344 (m.e.) TT Peri. = 255.97952 +/- 0.00082 Node = 331.78320 +/- 0.00025 (2000.0) Inc. = 5.49255 +/- 0.00005 q = 2.4985127 +/- 0.0000038 AU e = 0.3006077 +/- 0.0000012 a = 3.5724055 +/- 0.0000080 AU n' = 0.14596978 +/- 0.00000049 P = 6.752 +/- 0.0000228 years T = 2010 Dec. 3.62789 TT Epoch = 2010 Nov. 20.0 TT Peri. = 256.49531 e = 0.3010831 Node = 331.82755 (2000.0) a = 3.5711003 AU Inc. = 5.49811 n'= 0.14604981 q = 2.4959022 AU P = 6.748 years The predicted orbit for the 2024 return is as follows: T = 2024 May 27.12996 TT Epoch = 2024 May 10.0 TT Peri. = 255.79269 e = 0.2985562 Node = 331.75047 (2000.0) a = 3.5784780 AU Inc. = 5.48837 n'= 0.14559838 q = 2.5101011 AU P = 6.769 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2010/ 170127 568 0.0 0.4- 170326 703 0.3- 0.6+ 100314 G96 0.3- 0.1- 170127 568 0.1- 0.4- 170326 W92 1.4+ 0.7- 100314 G96 0.0 0.5- 170127 474 0.4- 0.1- 170329 703 0.1- 1.3+ 100314 G96 0.3- 0.1+ 170127 474 0.5- 0.2+ 170329 703 0.1+ 1.6+ 100314 G96 0.0 0.4- 170127 474 0.3- 0.1+ 170329 703 0.2- 1.1+ 100315 G96 0.3- 0.1- 170127 474 1.5- 0.5- 170329 703 0.3- 0.4+ 100315 G96 0.1- 0.2- 170205 215 (2.1- 0.9+) 170331 A71 0.3+ 0.7+ 100315 G96 0.1+ 0.6- 170205 215 1.4- 0.6+ 170331 A71 0.7- 0.1+ 100315 G96 0.2- 0.0 170205 215 0.5- 0.1- 170402 585 0.0 0.7+ 100407 G96 0.7+ 0.1- 170220 474 1.0- 0.2+ 170402 585 0.2- 0.6+ 100407 G96 0.1+ 0.6- 170220 474 1.2- 0.1+ 170402 585 0.5+ 0.7+ 100407 G96 0.2+ 0.6+ 170220 474 1.0- 0.2+ 170402 585 0.1+ 0.2+ 100407 G96 0.2+ 0.1+ 170221 G45 0.8- 0.9+ 170402 585 0.0 0.5+ 100407 G96 0.4- 0.0 170221 G45 1.0- 0.6+ 170402 585 0.1- 0.2+ 100407 G96 0.2+ 0.3+ 170221 G45 0.0 0.4+ 170404 G96 0.2+ 0.2+ 100407 G96 0.3- 0.1+ 170221 G45 1.0- 0.6- 170404 G96 0.0 0.0 100407 G96 0.2- 0.2+ 170221 F51 0.3- 0.3- 170404 G96 0.1- 0.1+ 100517 G96 1.0- 0.1- 170221 F51 0.3- 0.4- 170404 G96 0.1- 0.1- 100517 G96 0.3- 0.4- 170221 F51 0.1- 0.4- 170420 703 0.4+ 1.0- 100517 G96 0.9- 0.1+ 170221 F51 0.3- 0.3- 170420 703 0.1- 0.0 100517 G96 0.3- 0.1- 170222 G45 0.1- 0.4+ 170420 703 0.3+ 1.1- 100518 C51 0.3+ 0.5+ 170222 G45 0.9- 0.9- 170503 585 (2.2+ 1.7-) 100518 C51 (0.5+ 2.2+) 170222 G45 0.4+ 1.3+ 170503 585 (2.0+ 1.1-) 100518 C51 0.9+ 0.1- 170222 G45 0.6+ 0.6+ 170503 585 1.1+ 1.2- 100518 C51 1.0+ 1.6+ 170302 G45 0.4- 0.0 170503 585 1.2+ 1.6- 100518 C51 0.1- 0.2+ 170302 G45 0.0 0.5+ 170503 585 1.6+ 1.1- 100518 C51 0.3+ 0.5+ 170302 G45 0.4- 0.5+ 170503 585 1.4+ 1.0- 100518 C51 0.9+ 0.8- 170302 G45 0.0 0.4+ 170503 585 0.7+ 0.6- 100519 C51 1.4- 0.2+ 170302 G45 0.3- 0.5- 170503 585 1.2+ 0.8- 100519 C51 1.2+ 1.8+ 170302 G45 0.0 0.2+ 170503 585 0.9+ 0.8- 100519 C51 0.2- 0.6+ 170302 G45 0.1+ 0.3- 170503 585 1.1+ 0.5- 100519 C51 0.3+ 0.8+ 170302 G45 0.0 0.3- 170503 585 1.4+ 0.2- 2017/ 170325 G96 0.2+ 0.1+ 170517 A71 0.8+ 0.9- 170107 G96 0.3+ 0.4- 170325 G96 0.1+ 0.0 170517 A71 0.2- 0.2- 170107 G96 0.3+ 0.3+ 170325 G96 0.2+ 0.0 2018/ 170107 G96 0.9- 0.3+ 170325 G96 0.1+ 0.1+ 180808 F51 0.1+ 0.2- 170107 G96 0.4- 0.0 170326 703 0.1+ 0.1+ 180808 F51 0.1- 0.2- 170126 F51 0.1- 0.1- 170326 W92 (2.3+ 0.8-) 180808 F51 0.0 0.2+ 170126 F51 0.1- 0.1- 170326 703 0.1+ 0.3+ 180808 F51 0.1+ 0.1+ 170126 F51 0.1- 0.0 170326 703 0.2- 0.2+ 170127 568 0.1- 0.4- 170326 W92 (2.4+ 0.5-) ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2022 June 16

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