Nakano Note (Nakano wa Kangaeru noda) NK 3818 C/2018 B1 (Lemmon)
The following improved orbital elements, by S. Nakano, are from 137 observations 2017 Jan. 16 to 2019 Feb. 24. 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 3.40 AU from Jupiter on 2015 Sept. 1 and will pass 2.46 AU from Saturn on 2022 July 19 UT. See the previous orbits in NK 3550 and NK 3695 (= HICQ 2019). Epoch = 2018 Mar. 23.0 TT T = 2018 Mar. 30.58183 +/- 0.00161 (m.e.) TT Peri. = 68.35560 +/- 0.00020 Node = 133.15843 +/- 0.00006 (2000.0) Inc. = 162.42298 +/- 0.00001 q = 5.1168857 +/- 0.0000089 AU e = 1.0029800 +/- 0.0000086 1/a = -0.0005824 +/- 0.0000017 1/AU origin = +0.000195 (Q= 9) future = +0.000181 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 180201 J95 0.1+ 0.3- 180905 215 0.3+ 0.3- 170116 F51 0.1+ 0.1- 180201 J95 0.5+ 0.1- 180905 215 0.1+ 0.3+ 170116 F51 0.0 0.1+ 180203 U69 0.3- 0.1- 180905 215 0.1+ 0.9+ 170116 F51 0.1- 0.3+ 180203 U69 0.1- 0.1+ 180907 T05 0.4- 0.5- 170128 F51 0.2+ 0.2- 180203 P93 0.3+ 0.2+ 180907 T05 0.3- 0.0 170128 F51 0.0 0.2- 180203 P93 0.9+ 0.3+ 180907 T05 0.1- 0.5- 170128 F51 0.1- 0.1+ 180203 P93 0.9+ 0.4+ 180907 T05 0.1+ 0.5+ 2018/ 180204 703 1.3+ 0.4+ 180908 703 0.1- 0.2- 180125 G96 0.6+ 0.0 180204 703 0.8+ 1.1+ 180908 703 0.0 0.1+ 180125 G96 0.5+ 0.3- 180204 703 0.6+ 1.0+ 180908 703 0.5- 0.9- 180125 G96 0.2+ 0.3+ 180204 703 1.0+ 0.7+ 180908 703 0.0 0.5+ 180125 G96 0.6+ 0.2+ 180204 K61 0.6- 0.1- 180911 703 0.9+ 0.2- 180125 H01 0.3- 0.4- 180204 K61 0.7- 0.4- 180911 703 0.2+ 1.0+ 180125 H01 0.4- 0.5- 180205 H36 0.9+ 0.6+ 180911 703 1.0+ 0.1+ 180125 H01 0.4- 0.3- 180205 H36 0.7+ 1.0- 180911 703 0.5+ 0.7+ 180125 H01 0.4- 0.4- 180205 I52 0.5+ 0.4- 180918 G96 0.2+ 0.5- 180126 H01 0.2- 0.0 180205 I52 0.3- 0.2- 180918 G96 0.2+ 0.1- 180126 H01 0.4- 0.1+ 180205 I52 0.3+ 0.5+ 180918 G96 0.3- 0.4- 180126 H01 0.2- 0.0 180205 I52 0.2- 0.1+ 180918 G96 0.4- 0.2- 180126 H01 0.1- 0.1+ 180206 H36 1.1+ 0.5+ 181006 T08 0.9+ 0.3- 180126 L01 0.0 0.1- 180206 H36 0.8- 0.1+ 181006 T08 0.5+ 0.2+ 180126 L01 0.5+ 0.0 180206 711 0.4- 0.2- 181006 T08 0.2+ 0.3- 180126 L01 0.3- 0.2- 180206 711 0.1- 0.3- 181006 T08 0.2+ 0.2+ 180127 I52 0.6- 0.8- 180206 711 0.4- 0.0 181008 T05 0.1+ 0.2- 180127 I52 0.1+ 0.4+ 180207 I52 0.4+ 0.9- 181008 T05 0.0 0.6+ 180127 I52 0.0 0.6- 180207 I52 0.5- 0.0 181008 T05 0.6+ 0.1- 180127 I52 0.3+ 0.2+ 180207 711 0.5- 0.3- 181008 T05 (2.1+ 5.9-) 180127 H36 0.6- 0.4+ 180207 711 0.8- 0.3- 181010 461 0.6- 0.4- 180127 H36 1.7- 1.2+ 180207 I52 0.2- 0.4- 181010 461 0.6- 0.2- 180127 H36 1.5- 0.1- 180207 711 0.6- 0.2- 181010 461 0.6- 0.3- 180127 H01 0.1- 0.3- 180209 G96 0.3- 0.1- 181010 461 0.5- 0.3- 180127 H01 0.4- 0.5- 180209 G96 0.1- 0.2+ 181010 461 0.6- 0.4- 180127 H01 0.2- 0.4- 180209 G96 0.5- 0.2- 181010 461 0.5- 0.4- 180127 H01 0.7- 0.3- 180209 G96 0.1- 0.2- 181010 A71 0.0 0.2- 180128 H36 0.0 0.9+ 180213 Q11 0.6- 0.7- 181010 A71 0.2- 0.3- 180128 H36 0.6+ 0.4- 180213 Q11 0.8- 0.2- 181010 A71 0.1- 0.3- 180128 H36 1.7+ 0.9+ 180213 215 0.7+ 0.2+ 181010 A71 0.1- 0.2- 180128 I52 0.5+ 0.2+ 180213 215 0.5+ 0.3+ 181011 T08 0.4- 0.6+ 180128 I52 0.9- 0.2- 180213 215 1.0+ 0.9+ 181011 T08 1.2+ 0.6+ 180130 H36 0.2- 0.7+ 180303 K77 0.6- 0.7- 181011 T08 0.5+ 0.1- 180130 H36 0.7+ 0.6+ 180303 K77 0.5+ 0.0 181011 T08 0.0 0.6+ 180130 926 0.1- 0.3- 180817 U69 0.1- 0.5- 181011 T08 0.5+ 0.0 180130 926 0.3- 0.4- 180817 U69 0.2- 0.4- 181115 A77 0.5- 0.6- 180130 926 0.4+ 0.0 180905 703 0.3+ 0.4- 181115 A77 0.5- 0.4- 180131 J95 0.4- 0.1+ 180905 703 1.0- 0.7+ 2019/ 180131 J95 0.3- 0.0 180905 703 0.6- 0.8+ 190224 U69 0.2+ 0.6+ 180131 J95 0.4+ 0.0 180905 703 0.2+ 0.8+ 190224 U69 0.1- 0.6+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2019 May 10