Nakano Note (Nakano wa Kangaeru noda) NK 4196 C/2017 Y1 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 89 observations 2017 Dec. 24 to 2019 Apr. 4. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.55 arc second. See an orbit in HICQ 2019. Epoch = 2017 Sept. 4.0 TT T = 2017 Aug. 31.47500 +/- 0.00192 (m.e.) TT Peri. = 134.44573 +/- 0.00045 Node = 307.51209 +/- 0.00003 (2000.0) Inc. = 55.23618 +/- 0.00005 q = 3.7185897 +/- 0.0000185 AU e = 0.9992790 +/- 0.0000146 1/a = +0.0001939 +/- 0.0000039 1/AU origin = -0.000037 (Q= 8) future = +0.000445 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 171228 I52 0.2+ 0.2+ 180125 703 0.9- 1.0+ 171224 F51 0.2+ 0.4- 171228 I52 0.3- 0.3+ 180125 703 1.0- 1.0+ 171224 F51 0.2+ 0.4- 171229 G40 0.0 0.5+ 180125 703 1.6- 0.4+ 171224 F51 0.2+ 0.4- 171229 G40 0.3+ 0.4+ 180125 G96 0.6- 0.5+ 171224 F51 0.2+ 0.4- 171229 I52 0.6+ 0.2+ 180125 G96 0.5- 0.3+ 171225 A77 0.3- 0.6- 171229 I52 0.1+ 0.3- 180125 G96 0.4- 0.4+ 171225 A77 0.2- 0.9- 171229 I52 0.3- 0.1+ 180125 G96 0.0 0.0 171225 A77 0.8- 0.1+ 171229 V03 0.1- 0.2+ 180207 703 1.1- 1.7+ 171225 568 0.2+ 0.4- 171229 V03 0.1+ 0.4- 180207 703 (1.2- 2.6+) 171225 568 0.2+ 0.4- 171230 G96 0.8- 0.7+ 180207 703 (1.6- 2.3+) 171225 568 0.2+ 0.4- 171230 G96 0.0 0.3+ 180207 703 0.6- 1.9+ 171225 711 0.2- 0.2- 171230 G96 0.3- 0.1+ 180207 I41 0.5- 0.6+ 171225 711 0.1- 0.1- 171230 G96 0.2- 0.1- 180207 I41 0.3+ 0.2+ 171225 711 0.1- 0.1- 2018/ 180207 I41 0.2- 0.3+ 171225 H06 0.6- 0.6- 180114 703 0.4- 1.3+ 180207 I41 0.9- 0.4+ 171225 H06 0.9- 0.8- 180114 703 (2.9- 2.3+) 180207 I41 0.1- 0.4+ 171226 A71 0.3+ 0.5+ 180115 H06 0.5- 1.2+ 180207 I41 0.7- 0.5+ 171226 A71 0.4- 0.5+ 180115 H06 0.5- 1.1+ 180207 I41 0.7- 1.0+ 171226 J22 0.0 0.1+ 180115 H06 0.5- 1.1+ 180209 G96 0.2+ 0.9+ 171226 J22 0.3+ 0.1- 180120 F51 0.1+ 0.2+ 180209 G96 0.6- 0.8+ 171226 J22 0.3- 0.2+ 180120 F51 0.1+ 0.2+ 180209 G96 0.6- 0.9+ 171226 G40 0.5- 0.3+ 180120 F51 0.1+ 0.2+ 180209 G96 1.2- 0.7+ 171226 G40 0.8- 0.2+ 180123 Z32 (5.3+ 5.1+) 180213 215 0.3- 0.8+ 171226 I52 0.7+ 0.2+ 180123 Z32 (4.8+ 5.1+) 180213 215 0.3- 0.8+ 171226 I52 0.4- 0.6+ 180123 Z32 (5.1+ 4.8+) 180213 215 0.5- 0.6+ 171226 I52 0.3- 0.1+ 180123 Z32 (5.1+ 5.3+) 180315 W84 0.3- 0.6+ 171226 711 0.8+ 0.1+ 180123 Z32 (5.1+ 5.4+) 181209 568 0.3- 0.4- 171226 I52 0.2- 0.5+ 180123 Z32 (4.7+ 5.1+) 181209 568 0.4- 0.3- 171226 711 0.4+ 0.5+ 180123 Z32 (4.4+ 5.0+) 181209 568 0.4- 0.2- 171226 711 0.7+ 0.3+ 180123 Z32 (4.7+ 5.2+) 181231 568 0.3- 0.3- 171226 H06 0.3+ 0.4- 180123 Z32 (5.2+ 5.0+) 181231 568 0.1- 0.1- 171226 H06 0.2+ 0.3- 180123 Z32 (4.6+ 5.4+) 181231 568 0.6- 0.5- 171226 H06 0.0 0.5- 180123 Z32 (4.6+ 5.2+) 2019/ 171227 G40 0.1+ 0.5+ 180123 Z32 (4.8+ 5.3+) 190331 568 0.6+ 0.4+ 171227 G40 0.2+ 0.0 180123 Z32 (4.7+ 5.4+) 190404 568 0.6+ 0.2+ 171228 I52 0.1+ 0.2- 180123 Z32 (5.0+ 5.3+) 171228 I52 0.2- 0.1+ 180125 703 1.2- 0.4+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2020 Sept. 5