Nakano Note (Nakano wa Kangaeru noda) NK 3982 P/2013 G4 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 41 observations 2013 Apr. 12 to June 9. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.38 arc second. Epoch = 2013 Jan. 28.0 TT T = 2013 Feb. 9.97433 +/- 0.09684 (m.e.) TT Peri. = 214.47710 +/- 0.03086 Node = 339.76558 +/- 0.00439 (2000.0) Inc. = 5.92476 +/- 0.00047 q = 2.6132745 +/- 0.0000558 AU e = 0.4101447 +/- 0.0000604 a = 4.4303655 +/- 0.0004631 AU n' = 0.10569264 +/- 0.00001657 P = 9.325 +/- 0.0014620 years (+/- 0.53 day) The predicted orbit for the 2022 return is as follows: T = 2022 June 19.55676 TT Epoch = 2022 June 30.0 TT Peri. = 214.63077 e = 0.4093746 Node = 339.63945 (2000.0) a = 4.4398789 AU Inc. = 5.91639 n'= 0.10535311 q = 2.6223053 AU P = 9.355 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2013/ 130413 568 0.1- 0.0 130504 F51 0.0 0.1- 130412 F51 0.2+ 0.1+ 130413 568 0.1- 0.1+ 130504 F51 0.0 0.1- 130412 F51 0.1- 0.1+ 130414 J04 0.1+ 0.3+ 130504 Q62 0.2+ 0.1+ 130412 F51 0.1+ 0.1+ 130414 J04 0.0 0.4+ 130504 Q62 0.2- 0.0 130412 F51 0.0 0.2- 130414 J04 0.1- 0.4+ 130504 Q62 0.2- 0.3- 130413 807 0.0 0.1+ 130415 H06 0.8- 0.2+ 130508 474 0.4- 0.1- 130413 807 0.3- 0.2- 130415 H06 0.4- 0.2+ 130508 474 0.2- 0.2- 130413 807 0.6+ 0.3- 130415 H06 0.1- 0.5- 130508 474 0.3- 0.1+ 130413 W85 0.1+ 0.1- 130416 H06 0.0 0.5- 130508 474 0.4- 0.3- 130413 W85 0.2- 0.1- 130416 H06 0.2- 0.3- 130514 215 1.2+ 0.8+ 130413 W85 0.0 0.1- 130416 Q62 0.1+ 0.1+ 130514 215 1.5+ 1.7+ 130413 W85 0.1- 0.1- 130416 Q62 0.1+ 0.2+ 130609 474 0.4- 0.6+ 130413 W85 0.1- 0.0 130416 Q62 0.2+ 0.3+ 130609 474 0.2+ 0.1+ 130413 568 0.0 0.0 130504 F51 0.2- 0.3- 130609 474 0.1- 0.2- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2019 Dec. 18