Nakano Note (Nakano wa Kangaeru noda) NK 3563 C/2017 U4 (PANSTARRS)

The following improved orbital elements, by S. Nakano, are from 63 observations 2017 Jan. 2 to Dec. 26. 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. Orbit depends on one night observations in 2017 January. See an orbit in HICQ 2018. Epoch = 2018 Oct. 9.0 TT T = 2018 Sept.25.37039 +/- 0.03121 (m.e.) TT Peri. = 159.15833 +/- 0.00256 Node = 245.95159 +/- 0.00018 (2000.0) Inc. = 158.22631 +/- 0.00008 q = 7.7241563 +/- 0.0000415 AU e = 1.0040145 +/- 0.0001007 1/a = -0.0005197 +/- 0.0000130 1/AU origin = +0.000064 (Q= 7) future = +0.000054 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 171030 I52 0.2+ 0.4- 171116 I52 0.5+ 0.3- 170102 F51 0.2+ 0.0 171030 926 0.0 0.1- 171116 I52 1.3+ 0.4- 170102 F51 0.0 0.1+ 171030 926 0.6+ 0.1+ 171117 I52 0.5+ 0.6- 170102 F51 0.2- 0.1- 171030 926 0.5- 0.2- 171117 I52 1.3+ 0.5- 171027 F51 0.1+ 0.0 171102 926 0.0 0.5+ 171117 I52 1.5+ 0.0 171027 F51 0.3- 0.2+ 171102 926 0.3+ 0.1+ 171119 I52 0.6+ 0.2+ 171027 F51 0.2+ 0.0 171102 926 0.0 0.2- 171119 I52 1.4+ 0.4- 171028 H01 0.2+ 0.2- 171103 926 0.3+ 0.4+ 171119 I52 0.6+ 0.5- 171028 926 0.2+ 1.0+ 171103 926 0.7+ 0.0 171124 F51 0.1+ 0.1- 171028 H01 0.1- 0.1- 171103 926 0.6+ 0.4+ 171124 F51 0.3- 0.3+ 171028 H01 0.1- 0.1+ 171111 711 0.2+ 0.1- 171124 F51 0.1+ 0.0 171028 H01 0.1- 0.1- 171111 711 0.0 0.3+ 171212 568 0.2- 0.1+ 171028 926 0.4+ 0.3+ 171111 711 0.3+ 0.3+ 171212 568 0.1- 0.1+ 171028 926 0.1+ 0.3+ 171113 U69 0.1- 0.9- 171212 568 0.1- 0.0 171030 H01 0.1- 0.1- 171113 U69 0.5- 0.7- 171225 215 (2.6+ 0.2-) 171030 711 0.3- 0.3+ 171114 I52 1.2- 1.1+ 171225 215 1.6+ 0.6+ 171030 H01 0.1- 0.2- 171114 I52 0.4+ 0.9+ 171225 215 0.3- 0.3+ 171030 711 0.7- 0.4+ 171114 I52 0.8+ 0.1+ 171226 F51 0.0 0.0 171030 711 0.8- 0.5- 171116 568 0.2- 0.1- 171226 F51 0.0 0.1- 171030 H01 0.1- 0.2- 171116 568 0.2- 0.1- 171226 F51 0.1+ 0.0 171030 H01 0.1- 0.1- 171116 568 0.1- 0.1- 171226 F51 0.1- 0.1- 171030 I52 0.7- 1.1- 171116 I52 0.2+ 0.3- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2018 Mar. 11

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