Nakano Note (Nakano wa Kangaeru noda) NK 3720 302P/Lemmon-PANSTARRS
The following improved orbital elements, by S. Nakano, are from 121 observations 2007 to 2018. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.55 arc second. See the previous orbits in NK 2694 and NK 3230 (= HICQ 2018). Epoch = 2016 May 12.0 TT T = 2016 Apr. 30.53460 +/- 0.00032 (m.e.) TT Peri. = 208.28041 +/- 0.00016 Node = 121.78345 +/- 0.00016 (2000.0) Inc. = 6.03086 +/- 0.00001 q = 3.3022570 +/- 0.0000003 AU e = 0.2284740 +/- 0.0000001 a = 4.2801627 +/- 0.0000007 AU n' = 0.11130474 +/- 0.00000003 P = 8.855 +/- 0.0000021 years T = 2007 July 4.70748 TT Epoch = 2007 June 29.0 TT Peri. = 208.21376 e = 0.2305300 Node = 121.83103 (2000.0) a = 4.2591102 AU Inc. = 6.03786 n'= 0.11213101 q = 3.2772576 AU P = 8.790 years The predicted orbit for the 2025 return is as follows: T = 2025 Mar. 9.42061 TT Epoch = 2025 Mar. 26.0 TT Peri. = 208.63008 e = 0.2293999 Node = 121.71441 (2000.0) a = 4.2676201 AU Inc. = 6.03564 n'= 0.11179579 q = 3.2886284 AU P = 8.816 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2007/ 160804 A71 0.7+ 0.5- 171021 D29 0.2- 0.8+ 070816 D29 0.2- 0.8- 160805 A71 0.5+ 0.1- 171027 F51 0.1- 0.1+ 070816 D29 0.2- 0.6- 160810 U69 0.2+ 0.2- 171027 F51 0.2- 0.1+ 070816 D29 0.1- 0.6- 160810 U69 0.2- 0.1+ 171027 F51 0.1- 0.1+ 070816 D29 0.2- 0.4- 160813 215 0.2- 0.2+ 171027 F51 0.2- 0.1+ 070913 G96 0.3- 0.2- 160813 215 0.1- 0.0 171115 G96 0.0 0.1- 070913 G96 0.4- 0.1+ 160813 215 0.0 0.2- 171115 G96 0.0 0.1+ 070913 G96 0.2- 0.2+ 160828 Q60 0.2+ 0.8+ 171115 G96 0.2- 0.1+ 070913 G96 0.3- 0.1+ 160828 Q60 1.0- 0.3+ 171115 G96 0.1- 0.2+ 070915 699 1.7- 0.4+ 160828 Q60 0.4- 0.1- 171116 W98 0.1- 0.6+ 070915 699 0.4- 0.1- 160831 703 0.9- 0.8- 171116 W98 0.4+ 0.5+ 070915 699 0.1- 0.5+ 160831 703 1.1- 0.4- 171116 W98 0.0 0.4- 070915 699 0.3- 0.7+ 160831 703 0.4- 0.2- 171117 691 1.4- 0.8+ 070918 699 1.9+ 1.6+ 160831 703 0.7- 0.7- 171117 691 0.1- 0.5+ 070918 699 1.0- 1.2+ 160904 W98 0.4- 0.6+ 171117 691 0.7- 0.4+ 070918 699 0.4- 0.4+ 160904 W98 0.8- 0.9+ 171118 F51 0.1- 0.2+ 070918 699 0.8- 0.0 160904 W98 0.6- 0.1+ 171118 F51 0.2- 0.1+ 071002 E12 (2.4+ 0.7+) 160908 T05 0.2- 0.1- 171118 F51 0.2- 0.2+ 071002 E12 1.0+ 1.0+ 160908 F51 0.2+ 0.1+ 171118 F51 0.2- 0.2+ 071002 E12 0.9+ 1.7+ 160908 T05 1.8- 0.0 171119 F51 0.0 0.1+ 071002 E12 1.2+ 0.2+ 160908 F51 0.2+ 0.0 171119 F51 0.1- 0.1+ 2014/ 160908 T05 0.4+ 0.7- 171119 F51 0.1+ 0.1+ 140429 F51 0.0 0.6+ 160908 F51 0.3+ 0.1+ 171119 F51 1.1+ 0.6+ 140429 F51 0.2+ 0.3+ 160908 F51 0.2+ 0.1+ 171127 703 0.8- 0.7+ 140429 F51 0.0 0.3+ 160908 T05 0.9- 1.1+ 171127 703 1.9- 0.3- 140429 F51 0.0 0.3+ 160909 G96 0.2- 0.3+ 171127 703 0.8- 0.2+ 140521 F51 0.1+ 0.2+ 160909 G96 0.7- 0.0 171127 703 0.4- 0.3- 140521 F51 0.1+ 0.1+ 160909 G96 0.7- 0.0 171210 T08 0.1- 1.9+ 140521 F51 0.2+ 0.2+ 160909 G96 0.5- 0.1+ 171210 T08 (2.1- 0.7-) 140521 F51 0.3+ 0.1+ 161002 T05 0.5+ 1.1+ 171210 T08 0.0 0.6+ 140522 568 0.0 0.3+ 161002 T05 0.7+ 0.5- 171210 T08 0.1+ 0.2+ 140522 568 0.0 0.3+ 161002 T05 0.2+ 0.4+ 171215 G96 0.2+ 0.6+ 140522 568 0.0 0.3+ 161002 T05 0.9- 0.4+ 171215 G96 0.3+ 0.4+ 140523 Q62 0.3- 0.1+ 2017/ 171215 G96 0.6+ 0.7+ 140523 Q62 0.0 0.4+ 171016 106 0.4+ 0.4+ 171215 G96 0.3+ 0.5+ 140523 Q62 0.1+ 0.7+ 171016 106 0.0 0.6- 171222 F51 0.4+ 0.1+ 140531 F51 0.2+ 0.3+ 171016 106 0.9- 0.4- 171222 F51 0.0 0.0 140531 F51 0.1+ 0.4+ 171016 106 1.0- 0.5- 171222 F51 0.2+ 0.1+ 140531 F51 0.1+ 0.1+ 171019 F51 0.2+ 0.1+ 171222 F51 0.0 0.1+ 2016/ 171019 F51 0.2- 0.1+ 2018/ 160703 Q62 1.1- 0.3- 171019 F51 0.3- 0.0 180115 H06 0.8- 0.7+ 160703 Q62 0.7- 0.1- 171021 D29 1.1- 0.6+ 180115 H06 0.8- 0.5+ 160703 Q62 0.9- 0.1- 171021 D29 0.3- 0.3+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2018 Dec. 3