Nakano Note (Nakano wa Kangaeru noda) NK 4191 C/2017 E5 (Lemmon)
The following improved orbital elements, by S. Nakano, are from 80 observations 2017 Feb. 9 to May 28. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.61 arc second. The comet has passed 2.84 AU from Jupiter on 2017 Jan. 4 UT. Epoch = 2016 June 21.0 TT T = 2016 June 10.88007 +/- 0.00787 (m.e.) TT Peri. = 306.78074 +/- 0.00634 Node = 206.19004 +/- 0.00117 (2000.0) Inc. = 122.63007 +/- 0.00103 q = 1.7836918 +/- 0.0001400 AU e = 0.9954085 +/- 0.0000795 1/a = +0.0025741 +/- 0.0000446 1/AU origin = +0.003125 (Q= 6) future = +0.002889 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 170306 F51 0.0 0.4+ 170317 G96 0.2+ 0.1+ 170209 F51 0.1+ 0.2+ 170306 F51 0.1- 0.1+ 170317 G96 1.8+ 0.3- 170209 F51 0.0 0.2- 170308 I52 0.4+ 0.1+ 170317 J87 0.9- 0.6+ 170304 G96 0.5+ 0.8- 170308 I52 0.9- 0.4- 170317 J87 0.8- 0.7+ 170304 G96 0.1- 0.7- 170308 I52 0.4+ 0.2- 170317 J87 0.6- 0.6+ 170304 G96 1.1+ 1.5- 170308 I52 0.2+ 0.4- 170322 G96 0.5- 0.0 170304 G96 0.2- 1.9- 170308 U69 0.2- 0.1- 170322 G96 0.3- 0.0 170304 G96 1.4+ 0.8- 170308 U69 0.8+ 0.0 170322 G96 0.0 0.3- 170304 G96 0.0 0.2- 170309 G96 0.4+ 1.0- 170325 033 0.4+ 0.2+ 170304 G96 0.4+ 0.3- 170309 G96 0.1+ 0.4- 170325 033 0.3+ 0.3+ 170304 I52 (2.0- 0.4+) 170309 G96 0.6+ 0.9+ 170325 033 0.1- 0.3+ 170304 I52 0.9- 0.6- 170309 G96 0.2+ 0.3+ 170327 033 0.1- 0.1+ 170304 I52 0.1- 0.1+ 170310 G96 0.1- 0.1+ 170327 033 0.2+ 0.2+ 170304 300 0.2- 0.4- 170310 G96 0.3- 0.7- 170327 033 0.2- 0.0 170304 300 1.4- 0.1+ 170310 I52 0.1+ 0.4- 170327 033 0.4- 0.2+ 170304 300 0.8- 1.3- 170310 I52 0.1- 0.9+ 170327 033 0.2- 0.5+ 170305 H21 (1.2+ 2.3-) 170310 G96 0.1+ 0.4- 170328 K61 0.1- 0.0 170305 H21 (0.9+ 2.6-) 170310 I52 0.2- 0.2+ 170328 K61 1.0+ 0.6- 170305 H21 (1.0+ 2.4-) 170310 G96 0.5+ 0.4+ 170329 I93 0.5- 0.2+ 170306 G96 0.2- 0.1- 170311 595 0.4+ 0.3- 170329 I93 0.1- 1.0+ 170306 G96 0.4- 0.6- 170311 595 0.7+ 0.1+ 170330 I52 0.0 0.0 170306 G96 0.1+ 0.1+ 170316 K51 0.4- 0.2+ 170330 I52 0.3+ 0.1+ 170306 G96 0.7- 0.1- 170316 K51 0.5- 0.3+ 170330 I52 0.2+ 1.8- 170306 G96 0.2+ 0.4- 170316 K51 0.6- 0.5+ 170331 I52 1.1- 1.5- 170306 G96 0.2+ 0.2+ 170317 C10 1.3+ 0.4- 170331 I52 1.0+ 0.5- 170306 G96 0.1+ 0.6- 170317 C10 1.1+ 0.2+ 170331 I52 1.5+ 1.1+ 170306 G96 0.1+ 0.2- 170317 C10 1.9+ 0.7+ 170528 695 0.5- 0.4- 170306 F51 0.3- 0.1+ 170317 G96 0.3- 0.2+ 170306 F51 0.2- 0.3+ 170317 G96 0.3- 1.2- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2020 Sept. 5