Nakano Note (Nakano wa Kangaeru noda) NK 3670 P/2016 P1 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 39 observations 2016 Aug. 1 to Aug. 12. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.34 arc second. Epoch = 2015 Sept.15.0 TT T = 2015 Sept.18.84646 +/- 3.51706 (m.e.) TT Peri. = 269.24457 +/- 0.52462 Node = 319.59916 +/- 0.01899 (2000.0) Inc. = 24.75623 +/- 0.27778 q = 2.2734819 +/- 0.0037716 AU e = 0.2893849 +/- 0.0006819 a = 3.1993155 +/- 0.0061314 AU n' = 0.17223383 +/- 0.00049512 P = 5.722 +/- 0.0164507 years (+/- 6.01 days) The predicted orbit for the 2021 return is as follows: Another computation gives T = 2021 July 4. T = 2021 June 12.40694 TT Epoch = 2021 May 26.0 TT Peri. = 269.53354 e = 0.2890461 Node = 319.54384 (2000.0) a = 3.1994681 AU Inc. = 24.75522 n'= 0.17222151 q = 2.2746744 AU P = 5.723 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2016/ 160805 W86 0.4+ 0.4- 160807 291 0.4- 0.4- 160801 F51 0.0 0.1+ 160805 W86 0.2+ 0.3- 160807 291 1.3- 0.6- 160801 F51 0.1+ 0.0 160805 W86 0.2+ 0.4- 160807 291 0.9- 0.4- 160801 F51 0.2- 0.0 160805 W86 0.4+ 0.5- 160807 Q62 0.1+ 0.2- 160801 F51 0.0 0.1+ 160805 W86 0.5+ 0.0 160807 Q62 0.1- 0.1- 160802 568 0.0 0.0 160805 W86 0.3+ 0.2- 160807 Q62 0.1+ 0.3- 160802 568 0.1+ 0.0 160805 568 0.1+ 0.1- 160808 F51 0.0 0.1+ 160802 568 0.1+ 0.0 160805 568 0.1+ 0.1- 160808 F51 0.0 0.1+ 160802 568 0.1+ 0.0 160805 568 0.0 0.1- 160808 F51 0.1+ 0.2+ 160804 W96 (0.8- 2.0-) 160806 291 1.5- 0.9- 160808 F51 0.2- 0.2+ 160804 W96 0.3- 0.3- 160806 291 0.9- 0.2- 160812 291 0.3+ 0.0 160804 W96 0.9- 0.5- 160806 291 1.0- 0.3- 160812 291 0.4+ 0.1- 160805 W86 0.4+ 0.1- 160806 568 0.1+ 0.0 160812 291 0.2+ 0.0 160805 W86 0.3+ 0.2- 160806 568 0.1+ 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2018 Aug. 8