Nakano Note (Nakano wa Kangaeru noda) NK 5189 C/2019 G2 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 123 observations 2019 Feb. 27 to 2020 Sept. 13. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.47 arc second. The comet has passed 3.04 AU from Saturn on 2016 Aug. 12 and 0.99 AU from Jupiter on 2018 June 18 UT. See the previous orbits in NK 4016, NK 4038 and CBET 5361 (same orbit). Epoch = 2019 Dec. 23.0 TT T = 2019 Dec. 10.06239 +/- 0.00011 (m.e.) TT Peri. = 82.65294 +/- 0.00004 Node = 208.14430 +/- 0.00003 (2000.0) Inc. = 159.21163 +/- 0.00002 q = 2.2913520 +/- 0.0000008 AU e = 0.9967948 +/- 0.0000034 1/a = +0.0013988 +/- 0.0000015 1/AU origin = +0.002674 (Q= 8) future = +0.002397 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2019/ 190412 711 0.3- 0.9+ 200102 L27 0.1- 0.4- 190227 W84 0.3+ 0.3- 190415 V06 0.4- 0.4+ 200102 L27 0.2+ 0.5- 190228 W84 0.3+ 0.0 190415 V06 0.0 0.2+ 200102 T08 0.0 0.3+ 190302 W84 0.2+ 0.1- 190415 V06 1.7+ 0.3+ 200102 T08 0.6+ 0.3+ 190402 F51 0.2+ 0.1- 190415 V06 1.6+ 0.0 200102 T08 0.6+ 0.0 190402 F51 0.2+ 0.1+ 190424 F51 0.3- 0.1+ 200102 T08 0.9- 0.1- 190402 F51 0.2+ 0.3- 190424 F51 0.4- 0.1+ 200105 703 0.2+ 0.1+ 190403 H21 0.3+ 0.0 190424 F51 0.2- 0.1- 200105 703 0.1- 0.0 190403 H21 0.0 0.1+ 190501 215 0.4+ 0.2+ 200105 703 0.5- 0.7+ 190403 H21 0.2+ 0.0 190501 215 0.1+ 0.1+ 200105 703 1.3- 1.0+ 190403 I52 0.2- 0.1- 190501 215 0.1- 0.3+ 200106 T08 0.1- 0.3- 190403 I52 1.2- 0.2- 190506 N50 0.6+ 0.2- 200106 T08 1.0- 0.5- 190403 I52 0.3- 0.1+ 190506 N50 0.6+ 0.1- 200106 T08 0.3+ 0.6- 190403 I52 0.4+ 0.1+ 190506 N50 0.4+ 0.3- 200106 T08 0.1+ 0.2- 190403 Q62 0.1- 0.6+ 190705 568 0.4- 0.2+ 200114 703 0.0 0.5+ 190403 Q62 0.6- 0.2+ 190705 568 0.2- 0.3+ 200114 G96 0.2+ 0.5- 190403 Q62 0.5- 0.4+ 190705 568 0.2- 0.1+ 200114 703 0.2+ 1.2- 190407 033 0.3+ 0.3+ 190705 568 0.4- 0.1+ 200114 G96 0.1+ 0.4- 190407 033 0.3+ 0.4+ 191202 G96 0.5- 0.4+ 200114 703 0.4+ 0.0 190407 033 0.1+ 0.1+ 191202 G96 0.1+ 0.6+ 200114 G96 0.3+ 0.0 190407 033 0.4- 0.4- 191202 G96 0.4- 0.2+ 200114 703 0.3- 0.9- 190407 033 0.6- 0.4- 191202 G96 0.4- 0.1- 200114 G96 0.3+ 0.3- 190407 807 0.3+ 0.2- 191203 568 0.1+ 0.1+ 200119 H06 0.5+ 0.2+ 190407 807 0.0 0.1- 191203 568 0.1+ 0.1+ 200119 H06 0.9+ 0.3+ 190407 807 0.1+ 0.2+ 191205 C10 0.9- 1.0+ 200119 H06 0.9+ 0.1- 190407 F51 0.4- 0.1+ 191205 C10 1.2- 0.1+ 200120 703 0.1+ 0.8- 190407 F51 0.2- 0.0 191205 C10 0.6- 0.0 200120 703 1.4+ 0.4+ 190407 F51 0.3- 0.0 191206 H06 0.5+ 0.4+ 200120 703 0.4+ 0.4- 190407 F51 0.2+ 0.1+ 191206 H06 0.3- 0.1+ 200124 F51 0.3+ 0.1+ 190409 F51 0.4- 0.0 191220 H06 0.2- 0.2+ 200124 F51 0.0 0.2+ 190409 F51 0.3- 0.1+ 191220 H06 0.5- 0.1+ 200124 F51 0.3+ 0.2+ 190409 F51 0.0 0.1- 191220 H06 0.6- 0.2- 200124 F51 0.1+ 0.2+ 190409 F51 0.1- 0.2- 191229 T08 0.4- 0.0 200124 461 0.6+ 0.5+ 190411 691 0.6+ 0.2+ 191229 T08 0.2+ 0.7- 200124 461 0.4+ 0.8+ 190411 691 0.9+ 0.5+ 191229 T08 0.5- 0.6- 200220 461 0.2+ 0.5+ 190411 691 0.2+ 0.1- 191229 T08 0.5+ 0.5+ 200220 461 0.3+ 0.6+ 190411 I52 0.3- 0.1- 191230 H06 0.4+ 0.5- 200221 461 0.1+ 1.2+ 190411 I52 1.4+ 1.0- 191230 H06 0.3- 0.9- 200221 461 0.1- 0.7+ 190411 I52 0.0 0.1+ 2020/ 200913 568 0.1- 0.1+ 190411 I52 0.5+ 1.0- 200101 H06 0.9- 0.3+ 200913 568 0.3- 0.1- 190412 711 1.1- 0.2+ 200101 H06 0.5- 0.4+ 200913 568 0.3- 0.2- 190412 711 0.3- 0.9+ 200102 L27 0.4- 0.2- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2024 Mar. 1