Nakano Note (Nakano wa Kangaeru noda) NK 4190 C/2017 D5 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 74 observations 2017 Jan. 17 to Mar. 31. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.42 arc second. Epoch = 2017 Jan. 7.0 TT T = 2017 Jan. 8.86578 +/- 0.00339 (m.e.) TT Peri. = 287.82125 +/- 0.00096 Node = 92.71991 +/- 0.00045 (2000.0) Inc. = 131.03876 +/- 0.00013 q = 2.1672171 +/- 0.0000247 AU e = 0.9809398 +/- 0.0001373 1/a = +0.0087948 +/- 0.0000634 1/AU origin = +0.008844 (Q= 6) future = +0.009048 a = 113.7 AU P = 1212 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 170224 K92 0.1- 0.2+ 170304 474 0.0 0.6+ 170117 W84 0.2- 0.1- 170224 K92 0.2+ 0.3+ 170304 474 0.7+ 0.4- 170210 F51 0.6+ 0.0 170224 K92 0.2- 0.1+ 170304 474 0.4+ 0.1- 170210 F51 0.1- 0.1- 170224 K92 0.1+ 0.1+ 170304 474 0.0 0.1+ 170210 F51 0.2- 0.0 170224 K92 0.2+ 0.0 170315 291 0.2- 0.1+ 170223 F51 0.5- 0.7+ 170224 K92 0.2+ 0.0 170315 291 0.2+ 0.2- 170223 F51 0.3- 0.2+ 170224 K92 0.1- 0.3+ 170315 291 0.1- 0.2- 170223 F51 0.1+ 0.2+ 170224 K92 0.0 0.2+ 170317 807 0.2- 0.1- 170223 474 0.1+ 0.3+ 170226 807 0.3+ 0.1+ 170317 807 0.2+ 0.2+ 170223 474 0.0 0.2+ 170226 807 0.1+ 0.0 170317 291 0.2- 0.2+ 170223 474 0.1- 0.4+ 170226 807 0.0 0.0 170317 291 0.2+ 0.0 170224 568 0.0 0.2- 170226 474 0.1- 0.3- 170317 291 0.1+ 0.2+ 170224 568 0.0 0.1- 170226 474 0.2+ 0.3+ 170324 691 0.9+ 0.7- 170224 568 0.0 0.1- 170226 474 0.1- 0.0 170324 691 0.5- 0.2+ 170224 474 0.0 0.2+ 170226 474 1.7- 0.3+ 170324 691 0.4+ 0.3- 170224 474 0.2- 0.6+ 170227 568 0.1+ 0.1- 170328 691 1.2+ 1.0- 170224 474 0.3- 0.2- 170227 568 0.1+ 0.1- 170328 691 0.3- 0.0 170224 474 0.3- 0.5+ 170227 568 0.1+ 0.1- 170328 691 0.0 0.4+ 170224 Q62 0.8- 1.9- 170227 568 0.3+ 0.6- 170330 291 0.5+ 0.1- 170224 Q62 0.6- 1.9- 170301 474 0.4- 0.4+ 170330 291 0.3+ 0.0 170224 Q62 (0.4- 2.1-) 170301 474 0.1+ 0.1+ 170330 291 0.2+ 0.0 170224 K92 0.1- 0.2+ 170301 474 0.3- 0.1+ 170331 568 0.1- 0.0 170224 K92 0.1+ 0.1+ 170302 I52 1.4+ 0.0 170331 568 0.1- 0.1+ 170224 K92 0.1- 0.3+ 170302 I52 0.3+ 0.9- 170331 568 0.1- 0.1+ 170224 K92 0.1- 0.5+ 170302 I52 0.7- 0.4+ 170224 K92 0.1+ 0.5+ 170302 I52 0.5- 0.4- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2020 Sept. 5