Nakano Note (Nakano wa Kangaeru noda) NK 3838 C/2017 AB5 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 84 observations 2017 Jan. 3 to 2019 Apr. 25. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.46 arc second. See the previous orbits in NK 3552 and NK 3586 (= HICQ 2019). Epoch = 2018 Feb. 11.0 TT T = 2018 Feb. 17.87915 +/- 0.00901 (m.e.) TT Peri. = 78.39570 +/- 0.00046 Node = 42.69037 +/- 0.00007 (2000.0) Inc. = 32.43101 +/- 0.00002 q = 9.2164169 +/- 0.0000320 AU e = 0.9998739 +/- 0.0000196 1/a = +0.0000137 +/- 0.0000021 1/AU origin = +0.000056 (Q= 9) future = +0.000165 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 180106 926 0.3- 0.6+ 180312 Q11 0.3+ 0.5- 170103 F51 0.0 0.2- 180106 H36 0.6- 0.0 180312 Q11 0.2+ 0.7- 170103 F51 0.0 0.1- 180106 J95 0.0 0.4- 180313 Q11 0.1+ 0.6- 170103 F51 0.2+ 0.1- 180106 J95 0.8+ 0.0 180313 Q11 0.1+ 0.3- 170103 F51 0.1- 0.1+ 180106 J95 0.2+ 0.5- 180314 Q11 0.3- 0.3- 170103 F51 0.0 0.0 180107 K88 0.4- 0.5+ 180314 Q11 0.1- 0.1- 170103 F51 0.1+ 0.1- 180107 K88 0.2- 0.5+ 180314 Q11 0.5- 0.2- 170103 F51 0.0 0.0 180107 K88 0.2- 0.1+ 180406 A71 0.4- 0.5+ 170104 F51 0.0 0.2+ 180107 J95 0.5- 0.6- 180406 A71 0.4- 0.8+ 170104 F51 0.0 0.1- 180107 J95 0.1- 0.4- 180415 Q11 0.7+ 1.7- 170104 F51 0.1- 0.1+ 180107 J95 0.4- 0.1+ 180415 Q11 0.7+ 1.3- 170104 F51 0.0 0.2+ 180107 J95 0.1+ 0.1- 180418 215 0.4- 0.3- 170106 926 0.1- 0.0 180108 H06 1.1- 1.5- 180418 215 0.3- 0.3- 170106 926 0.4+ 0.3+ 180108 H06 1.5- 1.4- 180418 215 0.2- 0.6- 170106 926 0.0 0.2+ 180112 G40 0.2- 0.3- 181229 461 0.2- 0.1- 170107 926 0.3+ 0.1- 180112 G40 0.4- 0.2- 181229 461 0.2- 0.1+ 170107 926 0.2- 0.2+ 180118 Q11 0.7+ 0.4+ 2019/ 170107 926 0.6- 0.2- 180118 Q11 0.6+ 0.3+ 190329 215 0.1- 0.2+ 171209 F51 0.0 0.1+ 180120 Q11 0.8- 0.5+ 190329 215 0.3- 0.1- 171209 F51 0.0 0.1+ 180120 Q11 0.1- 0.6+ 190329 215 (2.4- 1.1-) 171209 F51 0.1+ 0.3+ 180206 K77 0.2- 0.6+ 190407 461 0.4- 1.0+ 2018/ 180206 K77 0.9+ 0.5+ 190407 461 0.9- 0.4+ 180105 F51 0.1+ 0.2- 180209 U69 0.2+ 0.3+ 190408 H06 1.7+ 0.6- 180105 F51 0.2+ 0.3+ 180209 U69 0.0 0.1+ 190408 H06 1.8+ 0.6- 180105 F51 0.1+ 0.2- 180209 U69 0.2+ 0.0 190408 461 0.5- 0.7+ 180105 F51 0.0 0.2+ 180213 215 0.1+ 0.4- 190408 461 1.7- 1.0+ 180106 H36 0.6- 0.3- 180213 215 0.0 0.3- 190425 461 0.5+ 0.3- 180106 926 0.1+ 0.3- 180213 215 0.0 0.3- 190425 461 1.0+ 0.1- 180106 H36 0.5- 0.1- 180311 Q11 0.6- 0.3+ 180106 926 0.5- 0.2+ 180311 Q11 0.4- 0.2+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2019 June 10