Nakano Note (Nakano wa Kangaeru noda) NK 4477 A/2019 O4
The following improved orbital elements, by S. Nakano, are from 69 observations 2018 Aug. 6 to 2021 May 9. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.27 arc second. See the previous orbit in NK 3888. Epoch = 2020 Feb. 1.0 TT T = 2020 Feb. 9.91823 +/- 0.00019 (m.e.) TT Peri. = 61.80399 +/- 0.00003 Node = 354.91849 +/- 0.00001 (2000.0) Inc. = 115.08491 +/- 0.00001 q = 3.6444219 +/- 0.0000009 AU e = 0.8891836 +/- 0.0000020 a = 32.8870168 +/- 0.0005820 AU n' = 0.00522598 +/- 0.00000014 P = 188.598 +/- 0.0050082 years (+/- 1.83 days) The predicted orbit for the 2208 return is as follows: T = 2208 Dec. 5.67594 TT Epoch = 2208 Nov. 22.0 TT Peri. = 61.68572 e = 0.8899471 Node = 354.94901 (2000.0) a = 33.1125414 AU Inc. = 115.02913 n'= 0.00517268 q = 3.6441308 AU P = 190.541 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2018/ 190731 L01 0.2+ 0.5+ 200520 568 0.0 0.1+ 180806 F51 0.1+ 0.3+ 190731 L01 0.1+ 0.6- 200520 568 0.1- 0.1+ 180821 F51 0.6- 0.2- 190731 L01 0.7- 0.7+ 200520 568 0.0 0.2+ 180821 F51 0.2+ 0.2+ 190802 H01 0.0 0.0 200617 568 0.0 0.1- 180821 F51 0.0 0.1- 190802 H01 0.1+ 0.0 200617 568 0.0 0.0 180821 F51 0.3+ 0.3- 190802 H01 0.1- 0.0 200619 H06 0.1- 1.2- 2019/ 190802 H01 0.0 0.0 200619 H06 0.2- 0.6- 190629 F51 0.1- 0.1+ 190804 Z84 0.0 0.1- 200619 H06 0.0 0.3- 190629 F51 0.2- 0.1+ 190804 Z84 0.0 0.2- 200629 F51 0.1+ 0.1+ 190629 F51 0.0 0.0 190811 568 0.1- 0.0 200629 F51 0.2- 0.1+ 190727 F51 0.3+ 0.1+ 190811 568 0.0 0.0 200629 F51 0.1+ 0.2- 190727 F51 0.2- 0.1- 190811 568 0.0 0.1- 200714 568 0.3- 0.1- 190727 F51 0.1- 0.1+ 190827 G96 0.0 0.1+ 200714 568 0.2+ 0.2+ 190729 H21 0.2- 0.2- 190827 G96 0.2- 0.3+ 200714 568 0.3- 0.1- 190729 H21 0.0 0.1+ 190827 G96 0.0 0.0 200714 568 0.3+ 0.0 190729 H21 0.0 0.2- 190827 G96 0.1- 0.1- 200717 568 0.2+ 0.1+ 190730 H36 0.3+ 0.0 190827 H06 0.1+ 0.6- 200717 568 0.1+ 0.1+ 190730 H36 (2.1- 1.3-) 190827 H06 0.2- 0.0 200914 568 0.0 0.0 190730 H01 0.2- 0.0 190905 461 0.9+ 0.7+ 200914 568 0.0 0.0 190730 H01 0.1- 0.0 190905 461 0.8+ 0.6+ 2021/ 190730 H01 0.1- 0.1- 190917 C95 0.1+ 0.5- 210405 568 0.1- 0.0 190730 H01 0.1+ 0.0 190917 C95 1.1+ 0.4- 210405 568 0.1- 0.0 190731 711 0.3+ 0.1+ 2020/ 210509 568 0.1+ 0.0 190731 711 0.2+ 0.1+ 200324 568 0.0 0.1- 210509 568 0.0 0.0 190731 711 0.3+ 0.0 200324 568 0.0 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2021 June 14