Nakano Note (Nakano wa Kangaeru noda) NK 3380 C/2015 ER61 - B (PANSTARRS)
The following improved orbital elements, S. Nakano, are from 47 observations 2017 June 11 to June 30 with considering the observations of the principal component between 2015 Jan.- 2017 May. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 1.18 arc seconds. See the orbit of principal component in NK 3379. Epoch = 2017 May 7.0 TT T = 2017 May 9.93916 +/- 0.00075 (m.e.) TT Peri. = 68.18931 +/- 0.00265 Node = 235.21994 +/- 0.00263 (2000.0) Inc. = 6.34837 +/- 0.00016 q = 1.0421823 +/- 0.0000029 AU e = 0.9973868 +/- 0.0000115 1/a = +0.0025074 +/- 0.0000110 1/AU origin = +0.001319 (Q= 8) future = +0.002252 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 170617 926 0.2+ 1.1- 170620 G40 0.0 0.8- 170611 G39 2.0+ 0.9+ 170618 G39 0.0 1.8- 170620 G39 (2.1- 3.1-) 170611 G39 0.3+ 0.6- 170618 G39 0.7+ 1.4- 170620 G39 2.2+ 0.1+ 170613 G39 0.2- 1.2- 170618 G39 0.9+ 1.3- 170621 926 (3.2- 2.5-) 170613 G39 0.1- 0.9- 170618 G39 1.3+ 0.2- 170621 926 0.2- 2.0- 170615 G39 0.0 0.4- 170619 C10 0.1- 1.1+ 170621 926 0.4- 2.2- 170615 G39 1.3+ 1.6- 170619 C10 0.3- 0.3- 170623 W96 0.6- 1.0- 170616 G40 0.8+ 0.8- 170619 G39 0.6- 1.2- 170623 W96 1.6+ 1.2- 170616 G40 0.6+ 0.8- 170619 G39 0.1- 1.1- 170625 G39 0.2+ 0.3- 170616 G39 0.6+ 1.0- 170619 G39 0.4+ 0.9- 170625 G39 0.8+ 0.5- 170616 G39 1.1+ 0.5- 170619 Q62 0.4- 1.2- 170625 G39 0.1+ 0.4- 170616 G39 0.8- 1.3- 170619 Q62 0.4- 1.7- 170626 G39 1.6- 0.8- 170616 G39 1.2+ 1.2- 170619 Q62 0.7+ 0.8- 170626 G39 0.3+ 0.1- 170617 G39 0.8+ 0.5- 170619 Q62 0.7- 1.9- 170629 G39 0.0 0.2+ 170617 G39 1.3+ 0.2- 170620 A71 (3.5- 0.7-) 170629 G39 (2.7- 0.9-) 170617 G39 1.0+ 0.7- 170620 A71 1.1- 0.9- 170630 G39 (4.2- 1.6-) 170617 926 0.3- 1.6- 170620 A71 1.7- 2.3- 170630 G39 0.7- 0.2+ 170617 926 0.6+ 1.1- 170620 G40 1.1+ 1.0- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2017 July 10