Nakano Note (Nakano wa Kangaeru noda) NK 3538 C/2017 F1 (Lemmon)
The following improved orbital elements, by S. Nakano, are from 78 observations 2017 Mar. 20 to 2018 Jan. 20. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.50 arc second. The comet has passed 1.43 AU from Jupiter on 2016 Mar. 12 UT. See the previous orbit in NK 3467 (= HICQ 2018). Epoch = 2017 Nov. 23.0 TT T = 2017 Nov. 30.98485 +/- 0.00450 (m.e.) TT Peri. = 64.81534 +/- 0.00060 Node = 158.74271 +/- 0.00008 (2000.0) Inc. = 146.48113 +/- 0.00004 q = 4.4997622 +/- 0.0000071 AU e = 1.0043511 +/- 0.0000153 1/a = -0.0009670 +/- 0.0000034 1/AU origin = +0.000021 (Q= 8) future = -0.000278 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 170323 H06 0.1- 0.2+ 170331 I52 0.9- 0.8+ 170320 G96 0.7+ 0.5- 170323 926 0.3+ 0.1+ 170401 926 0.0 0.2+ 170320 G96 0.1- 0.2+ 170323 H06 0.4+ 0.7+ 170401 926 0.1- 0.7- 170320 G96 0.4+ 0.0 170323 926 0.4+ 0.1- 170517 215 0.4+ 1.1+ 170320 G96 0.8- 0.5- 170324 I52 0.0 0.3+ 170517 215 0.1- 0.7+ 170320 G96 0.2- 0.9+ 170324 I52 0.3+ 0.5- 170517 215 0.1- 0.6+ 170320 G96 0.2- 0.5+ 170324 I52 0.3- 0.2+ 170518 568 0.2- 0.1- 170320 G96 1.1- 0.1+ 170325 I52 1.4+ 0.2+ 170518 568 0.2- 0.1- 170320 G96 (2.0- 0.2-) 170325 I52 0.7+ 0.2- 170522 U69 1.9+ 0.3+ 170321 926 0.4+ 0.4+ 170325 I52 0.0 0.2+ 170522 U69 1.6+ 0.4+ 170321 G96 1.5- 1.1- 170326 I52 1.6+ 0.5- 171021 568 0.1- 0.1- 170321 G96 0.1- 0.7- 170326 I52 0.5+ 0.6- 171021 568 0.0 0.2- 170321 926 0.2- 0.2+ 170327 I52 0.8- 0.2- 171021 568 0.1- 0.0 170321 926 0.0 0.7+ 170327 I52 0.3- 0.4- 171021 568 0.0 0.0 170321 G96 0.9- 0.8- 170327 I52 0.1- 0.0 171102 U69 0.3+ 0.4- 170321 G96 0.5+ 0.0 170327 I52 0.1- 0.2- 171102 U69 0.0 0.1+ 170321 G96 1.0+ 0.1- 170327 K51 0.3+ 0.1+ 171116 695 0.1+ 0.1+ 170322 I52 0.6+ 0.2+ 170327 K51 0.5+ 0.1+ 171116 695 0.1+ 0.2- 170322 I52 0.6+ 0.3- 170327 K51 0.4+ 0.1+ 171116 695 0.1- 0.3+ 170322 H01 0.3- 0.2- 170329 I52 0.4- 0.9+ 171116 695 0.1- 0.3+ 170322 H01 0.1- 0.0 170329 I52 1.2+ 0.3- 171213 703 0.2- 0.1+ 170322 H01 0.2- 0.1- 170329 I52 (2.8+ 0.1-) 171213 703 (2.1+ 1.3-) 170322 H01 0.2- 0.1- 170330 I52 0.3+ 0.4- 171213 703 0.3+ 1.5- 170323 I52 0.0 0.0 170330 I52 0.0 0.1- 171213 703 0.6+ 1.6- 170323 I52 0.3- 0.1- 170330 I52 0.1- 0.7+ 2018/ 170323 I52 0.5- 0.0 170330 I52 0.6+ 0.3+ 180120 568 0.1- 0.1+ 170323 I52 0.9- 0.7- 170331 I52 1.4- 0.1- 180120 568 0.1+ 0.1- 170323 926 0.4- 0.0 170331 I52 0.1+ 0.1+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2018 Feb. 6