Nakano Note (Nakano wa Kangaeru noda) NK 3693 C/2016 Q2 (PANSTARRS)

The following improved orbital elements, by S. Nakano, are from 88 observations 2016 Aug. 26 to 2018 Aug. 19. 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 orbits in NK 3450 (= HICQ 2018) and NK 3671. Epoch = 2021 May 26.0 TT T = 2021 May 11.86477 +/- 0.00872 (m.e.) TT Peri. = 84.52963 +/- 0.00070 Node = 322.29574 +/- 0.00002 (2000.0) Inc. = 109.38833 +/- 0.00008 q = 7.0817171 +/- 0.0000704 AU e = 1.0007220 +/- 0.0000188 1/a = -0.0001019 +/- 0.0000027 1/AU origin = +0.000114 (Q= 8) future = +0.000141 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2016/ 161001 568 0.1+ 0.2- 170914 Q62 0.5- 0.5+ 160826 F51 0.1+ 0.3+ 161001 568 0.0 0.3- 170914 Q62 0.1- 0.8+ 160826 F51 0.1+ 0.2- 161003 568 0.1+ 0.2- 170914 Q62 0.3- 1.1+ 160826 F51 0.3+ 0.1+ 161003 568 0.1+ 0.2- 170916 F51 0.0 0.1+ 160827 291 0.1+ 0.9+ 161029 568 0.2- 0.2+ 170916 F51 0.2- 0.1+ 160827 291 0.3- 0.5+ 161029 568 0.0 0.1+ 170916 F51 0.2- 0.2+ 160827 291 0.3- 0.6+ 2017/ 170916 F51 0.1- 0.0 160827 Q62 0.6- 0.6+ 170425 568 0.1+ 0.3- 171010 F51 0.1+ 0.0 160827 Q62 0.5- 0.7+ 170425 568 0.0 0.1- 171010 F51 0.1- 0.0 160827 Q62 0.7- 0.8+ 170723 461 0.3- 1.0+ 171010 F51 0.2+ 0.3+ 160827 Q62 0.5- 0.7+ 170723 461 0.0 0.7+ 171010 F51 0.2- 0.4- 160828 H21 0.0 0.2- 170729 461 0.5- 0.3+ 171014 461 0.2+ 0.1+ 160828 H21 0.1- 0.0 170729 461 0.6- 0.1- 171014 461 0.2- 0.4+ 160828 H21 0.4- 0.1+ 170823 F51 0.0 0.0 2018/ 160829 291 0.6- 1.5+ 170823 F51 0.0 0.0 180803 461 0.5+ 0.3- 160829 291 0.4- 1.9+ 170823 F51 0.1- 0.2- 180803 461 0.3- 0.3+ 160830 291 1.2- 1.5+ 170823 F51 0.2- 0.1- 180804 Q62 1.4+ 0.5- 160830 291 0.9- 1.6+ 170823 461 0.4+ 0.8+ 180804 Q62 1.0+ 0.3- 160830 A71 0.1- 0.6+ 170823 461 0.3- 1.3+ 180804 Q62 1.3+ 0.1- 160830 A71 0.0 1.6+ 170824 F51 0.0 0.1+ 180804 461 0.5+ 0.3- 160907 215 1.8- 0.1+ 170824 F51 0.0 0.0 180804 461 0.2- 0.6- 160907 215 1.8- 0.6+ 170824 F51 0.2+ 0.2- 180811 215 0.8- 0.2+ 160907 215 (2.0- 0.2+) 170824 F51 0.1- 0.0 180811 215 0.7- 1.3+ 160923 Q62 1.1+ 1.6+ 170824 F51 0.1- 0.0 180811 215 1.2- 1.7+ 160923 Q62 1.2+ 1.4+ 170824 F51 0.0 0.3- 180817 461 0.3+ 0.4- 160923 Q62 1.4+ 1.4+ 170824 F51 0.0 0.2- 180817 461 0.4+ 0.3- 160923 Q62 0.6+ 1.0+ 170824 F51 0.1- 0.0 180818 461 0.1+ 0.1+ 160924 N50 0.2+ 0.0 170825 A71 0.5- 1.6+ 180818 461 0.2+ 0.3+ 160924 N50 0.0 0.4- 170825 A71 0.8+ 1.8+ 180819 461 0.7+ 0.3+ 160924 N50 0.2+ 0.6- 170913 568 0.1+ 0.2- 180819 461 0.1+ 0.3- 161001 568 0.1+ 0.3- 170913 568 0.1+ 0.3- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2018 Oct. 11

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