Nakano Note (Nakano wa Kangaeru noda) NK 3550 C/2018 B1 (Lemmon)
The following improved orbital elements, by S. Nakano, are from 73 observations 2017 Jan. 16 to 2018 Feb. 7. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.51 arc second. The comet has passed 3.40 AU from Jupiter on 2015 Sept. 1 and will pass 2.46 AU from Saturn on 2022 July 19 UT. Epoch = 2018 Mar. 23.0 TT T = 2018 Mar. 30.55590 +/- 0.02432 (m.e.) TT Peri. = 68.35262 +/- 0.00282 Node = 133.15845 +/- 0.00008 (2000.0) Inc. = 162.42298 +/- 0.00003 q = 5.1170077 +/- 0.0001129 AU e = 1.0030575 +/- 0.0000822 1/a = -0.0005975 +/- 0.0000161 1/AU origin = +0.000180 (Q= 8) future = +0.000166 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 180127 I52 0.0 0.6- 180203 P93 0.9+ 0.2+ 170116 F51 0.2+ 0.1- 180127 I52 0.3+ 0.3+ 180203 P93 0.8+ 0.4+ 170116 F51 0.0 0.1+ 180127 H36 0.5- 0.5+ 180204 703 1.2+ 0.4+ 170116 F51 0.1- 0.3+ 180127 H36 1.7- 1.2+ 180204 703 0.7+ 1.1+ 170128 F51 0.1+ 0.2- 180127 H36 1.4- 0.1- 180204 703 0.5+ 0.9+ 170128 F51 0.1- 0.2- 180127 H01 0.1- 0.3- 180204 703 0.9+ 0.7+ 170128 F51 0.1- 0.0 180127 H01 0.4- 0.5- 180204 K61 0.6- 0.1- 2018/ 180127 H01 0.1- 0.4- 180204 K61 0.7- 0.4- 180125 G96 0.6+ 0.0 180127 H01 0.6- 0.2- 180205 H36 0.8+ 0.5+ 180125 G96 0.5+ 0.3- 180128 H36 0.1+ 0.9+ 180205 H36 0.6+ 1.1- 180125 G96 0.3+ 0.3+ 180128 H36 0.6+ 0.4- 180205 I52 0.4+ 0.5- 180125 G96 0.7+ 0.3+ 180128 H36 1.7+ 0.9+ 180205 I52 0.3- 0.2- 180125 H01 0.2- 0.3- 180128 I52 0.6+ 0.2+ 180205 I52 0.2+ 0.4+ 180125 H01 0.4- 0.4- 180128 I52 0.8- 0.1- 180205 I52 0.3- 0.0 180125 H01 0.3- 0.3- 180130 H36 0.2- 0.7+ 180206 H36 1.0+ 0.5+ 180125 H01 0.3- 0.4- 180130 H36 0.7+ 0.6+ 180206 H36 0.8- 0.1+ 180126 H01 0.2- 0.1+ 180130 926 0.1- 0.3- 180206 711 0.5- 0.3- 180126 H01 0.3- 0.1+ 180130 926 0.3- 0.4- 180206 711 0.2- 0.3- 180126 H01 0.2- 0.0 180130 926 0.4+ 0.0 180206 711 0.5- 0.1- 180126 H01 0.0 0.1+ 180131 J95 0.4- 0.1+ 180207 I52 0.3+ 1.0- 180126 L01 0.0 0.1- 180131 J95 0.3- 0.0 180207 I52 0.5- 0.1- 180126 L01 0.5+ 0.0 180131 J95 0.4+ 0.1- 180207 711 0.6- 0.3- 180126 L01 0.3- 0.2- 180201 J95 0.1+ 0.3- 180207 711 0.9- 0.4- 180127 I52 0.6- 0.8- 180201 J95 0.5+ 0.2- 180207 I52 0.3- 0.4- 180127 I52 0.1+ 0.4+ 180203 P93 0.3+ 0.2+ 180207 711 0.7- 0.2- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2018 Feb. 8