Nakano Note (Nakano wa Kangaeru noda) NK 3668 P/2015 J3 (NEOWISE)
The following improved orbital elements, by S. Nakano, are from 110 observations 2015 May 15 to Sept. 7. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.41 arc second. Epoch = 2015 Feb. 27.0 TT T = 2015 Mar. 3.76466 +/- 0.00055 (m.e.) TT Peri. = 129.29190 +/- 0.00012 Node = 111.42126 +/- 0.00009 (2000.0) Inc. = 8.12541 +/- 0.00003 q = 1.4940758 +/- 0.0000032 AU e = 0.5539728 +/- 0.0000053 a = 3.3497411 +/- 0.0000407 AU n' = 0.16076341 +/- 0.00000293 P = 6.131 +/- 0.0001117 years (+/- 0.04 day) The predicted orbit for the 2021 return is as follows: T = 2021 Apr. 22.19554 TT Epoch = 2021 Apr. 16.0 TT Peri. = 129.45790 e = 0.5543284 Node = 111.35076 (2000.0) a = 3.3477755 AU Inc. = 8.13092 n'= 0.16090502 q = 1.4920083 AU P = 6.125 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2015/ 150612 703 1.6- 0.6- 150724 F51 0.1- 0.1- 150515 C51 (0.5- 2.1-) 150612 703 0.7- 0.4+ 150724 F51 0.0 0.1- 150515 C51 0.5+ 0.3+ 150612 703 (2.2- 0.8+) 150724 F51 0.1- 0.1- 150515 C51 0.5+ 0.7- 150616 474 0.4- 0.1+ 150724 F51 0.1- 0.1- 150515 C51 0.5- 0.2+ 150616 474 0.3- 0.1- 150809 F51 0.0 0.2- 150515 C51 0.3+ 1.6+ 150624 474 0.1+ 0.0 150809 F51 0.0 0.3- 150516 C51 0.9- 0.2+ 150624 474 0.1+ 0.1- 150809 F51 0.2+ 0.1- 150516 C51 0.4+ 0.3+ 150624 474 0.2- 0.1+ 150809 F51 0.1- 0.2- 150516 C51 0.0 0.1- 150624 474 0.0 0.0 150811 F51 0.0 0.1+ 150516 C51 0.2+ 0.9- 150624 474 0.0 0.1- 150811 F51 0.1- 0.0 150516 C51 1.4+ 0.9- 150625 F51 0.2+ 0.1+ 150811 F51 0.0 0.1+ 150519 703 0.2+ 0.9- 150625 F51 0.0 0.1+ 150811 F51 0.2+ 0.1+ 150519 291 0.3+ 0.1- 150710 474 0.3- 0.0 150811 F51 0.1+ 0.0 150519 703 0.3+ 0.2+ 150710 474 0.1- 0.0 150811 F51 0.1+ 0.1+ 150519 291 0.2+ 0.0 150710 474 0.2- 0.0 150811 F51 0.1+ 0.1+ 150519 703 (2.1- 0.1+) 150710 474 0.4- 0.0 150811 F51 0.2+ 0.1+ 150519 703 (2.8- 0.3-) 150712 F51 0.2+ 0.0 150812 F51 0.0 0.1- 150519 291 0.4+ 0.0 150712 F51 0.2+ 0.0 150812 F51 0.1+ 0.1+ 150520 W96 0.3+ 0.4- 150712 F51 0.3+ 0.0 150812 F51 0.1- 0.0 150520 W96 0.1- 0.6+ 150712 F51 0.3+ 0.1+ 150812 F51 0.0 0.0 150520 W96 0.2+ 0.7- 150714 F51 0.1- 0.1+ 150814 G45 (2.2- 0.1-) 150520 H06 1.0- 0.5+ 150714 F51 0.0 0.0 150814 G45 0.8- 0.2- 150520 H06 0.9- 0.6+ 150714 F51 0.0 0.0 150814 G45 0.9- 0.1+ 150520 291 0.1- 0.3+ 150714 F51 0.0 0.1+ 150814 G45 0.9- 0.2+ 150520 291 0.0 0.0 150715 215 1.2- 0.4- 150814 G45 0.2- 0.6+ 150521 W96 0.7- 0.1+ 150715 215 1.6- 0.2- 150822 474 0.6- 0.3+ 150521 W96 0.2- 0.2- 150715 215 1.8- 0.2+ 150822 474 0.4- 0.2+ 150522 W96 0.1- 0.4- 150719 474 0.5- 0.0 150822 474 0.4- 0.1+ 150522 W96 0.6- 0.3+ 150719 474 0.4- 0.3+ 150825 474 0.7- 0.1- 150522 W96 1.1+ 0.2+ 150719 474 0.1- 0.2- 150825 474 1.1- 0.1- 150522 926 0.1+ 0.2+ 150719 474 0.4- 0.1+ 150825 474 0.1- 0.1- 150522 926 0.3- 0.1- 150719 F52 0.0 0.2- 150906 F51 0.1+ 0.0 150522 291 0.5- 0.2- 150719 F52 0.1+ 0.0 150906 F51 0.2+ 0.0 150522 291 0.6- 0.1- 150719 F52 0.2+ 0.0 150906 F51 0.0 0.0 150522 291 1.0- 0.3- 150719 F52 0.1+ 0.0 150906 F51 0.1- 0.0 150522 926 0.2+ 0.1- 150721 G45 1.1- 0.0 150907 474 0.2- 0.4+ 150522 474 0.5+ 0.1+ 150721 G45 0.3- 0.7+ 150907 474 0.2- 0.5+ 150522 474 0.9+ 0.1- 150721 G45 1.6- 0.6+ 150907 474 0.7- 0.4+ 150522 474 0.2+ 0.0 150721 G45 1.3- 1.3+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2018 Aug. 8