Nakano Note (Nakano wa Kangaeru noda) NK 3806 P/2019 A2 (ATLAS)
The following improved orbital elements, by S. Nakano, are from 172 observations 2018 Nov. 3 to 2019 Mar. 23. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.47 arc second. See the previous orbit in NK 3789. Epoch = 2018 Nov. 18.0 TT T = 2018 Nov. 21.54590 +/- 0.07977 (m.e.) TT Peri. = 324.24223 +/- 0.01442 Node = 139.46346 +/- 0.00081 (2000.0) Inc. = 14.85496 +/- 0.00051 q = 3.5429571 +/- 0.0000904 AU e = 0.3820871 +/- 0.0000155 a = 5.7337485 +/- 0.0002054 AU n' = 0.07178705 +/- 0.00000386 P = 13.730 +/- 0.0007378 years (+/- 0.27 day) The predicted orbit for the 2032 return is as follows: T = 2032 July 20.99938 TT Epoch = 2032 July 27.0 TT Peri. = 323.80677 e = 0.3821324 Node = 139.31150 (2000.0) a = 5.7236575 AU Inc. = 14.86519 n'= 0.07197698 q = 3.5364625 AU P = 13.693 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2018/ 190106 Q11 0.5+ 0.1- 190111 213 0.5- 0.1- 181103 J43 0.0 0.1+ 190106 Q11 0.5+ 0.2- 190111 L27 0.7- 0.4+ 181103 J43 0.0 0.3- 190106 Q11 0.4+ 0.0 190111 213 0.2- 0.4- 181103 J43 0.0 0.1- 190106 K63 0.1- 0.0 190111 L27 0.5- 0.3+ 181103 J43 0.0 0.2- 190106 587 0.7- 0.9+ 190111 213 1.1- 0.3+ 181213 D29 1.2- 0.2- 190106 587 0.0 0.5+ 190113 349 1.0- 0.3+ 181213 D29 0.6- 0.3- 190106 587 0.2- 0.1+ 190113 349 0.8- 0.6+ 181213 D29 0.9- 0.1- 190106 K63 1.0- 0.0 190114 A71 0.4- 0.7+ 181227 T05 1.0- 0.5+ 190106 L06 0.2+ 0.7- 190114 A71 0.8- 0.6+ 181227 T05 0.2- 0.5- 190106 K63 0.6- 0.2+ 190114 A71 0.0 0.3+ 181227 T05 0.2- 0.3+ 190106 L06 0.6- 0.5- 190118 Q21 0.3+ 0.7+ 181227 T05 1.7- 0.7+ 190106 157 0.2+ 0.3- 190118 Q21 0.3- 0.5+ 181230 J43 0.3+ 0.2- 190106 157 0.3+ 0.0 190124 T05 0.4- 0.1- 181230 J43 0.1+ 0.1+ 190106 157 0.6+ 0.0 190124 T05 (2.9- 0.8+) 181230 J43 0.0 0.1- 190106 157 0.4+ 0.1+ 190124 T05 0.0 0.1+ 181230 J43 0.0 0.1+ 190106 L06 0.4- 0.6- 190124 T05 0.4+ 0.3+ 2019/ 190107 W85 0.2+ 0.0 190125 L27 1.0- 0.6+ 190104 T05 0.0 0.7- 190107 W85 0.4+ 0.1- 190125 L27 0.9- 0.0 190104 T05 0.3- 0.1+ 190107 W85 0.6+ 0.1- 190125 L27 1.2- 0.8- 190104 T05 0.3- 0.1+ 190107 W85 0.4+ 0.2- 190127 G96 0.8+ 0.2- 190104 T05 0.5- 0.1- 190107 K41 1.1- 0.3+ 190127 G96 0.7+ 0.2- 190105 K38 1.2- 0.1+ 190107 K41 0.8- 0.4+ 190127 G96 0.3+ 0.3- 190105 K38 0.3- 1.1+ 190107 K41 0.6- 0.5+ 190127 G96 0.2- 0.1- 190105 W96 0.3+ 0.6+ 190107 K51 0.3+ 0.1- 190128 L27 0.0 0.4+ 190105 K38 0.0 0.0 190107 K51 0.3+ 0.0 190128 L27 0.5- 0.2+ 190105 W96 0.1- 0.1+ 190107 K51 0.1+ 0.0 190128 L27 0.2- 0.0 190105 G40 0.5+ 0.2- 190107 Z99 0.3+ 0.6- 190129 C47 0.7+ 0.1+ 190105 G40 0.2+ 0.2- 190107 Z99 0.8+ 0.7- 190129 C47 0.3- 0.5- 190105 W96 0.9+ 0.4+ 190107 Z99 0.6+ 0.9- 190129 C47 0.7+ 0.4- 190105 I47 0.2+ 0.6+ 190107 L27 0.2- 0.3+ 190129 C47 0.2+ 0.1+ 190105 I47 0.6- 0.6+ 190108 L27 0.8- 0.8+ 190129 C47 0.0 0.1- 190105 W96 0.3+ 0.0 190108 L27 0.4- 0.0 190129 C47 0.4+ 0.2+ 190105 H06 0.4- 0.1- 190108 W87 0.6+ 0.2- 190129 C47 0.2+ 0.3- 190105 H06 0.5- 0.2- 190108 W87 0.4+ 0.1- 190130 850 0.5+ 0.4- 190105 568 0.8+ 0.4- 190108 W87 0.4+ 0.1- 190130 850 0.1- 0.1+ 190105 568 0.8+ 0.3- 190108 I52 0.3- 0.0 190130 J43 0.0 0.1+ 190105 568 0.6+ 0.3- 190108 I52 0.9- 0.1+ 190130 J43 0.4+ 0.0 190105 P93 0.5+ 0.1+ 190108 I52 0.4+ 0.3- 190130 J43 0.2+ 0.1+ 190105 P93 1.0+ 0.6+ 190108 I52 0.2- 0.1+ 190130 J43 0.0 0.0 190105 P93 0.5+ 0.0 190108 T05 1.2- 0.2+ 190201 Q11 0.2+ 0.1+ 190105 P93 0.0 0.5+ 190108 T05 0.1+ 0.4- 190201 Q11 0.2+ 0.0 190105 L19 1.1- 0.7+ 190108 T05 0.2- 0.0 190201 Q11 0.3+ 0.2+ 190105 104 1.1- 0.4+ 190108 C42 0.4+ 0.1- 190206 L27 1.2- 1.2- 190105 L19 0.1+ 0.1+ 190108 C42 0.2+ 0.1- 190206 L27 0.1- 0.0 190105 C77 0.7- 0.1- 190108 C42 0.2- 0.2+ 190207 L27 0.1- 0.2- 190105 104 0.5- 0.5+ 190108 C42 0.0 0.3- 190226 H45 0.2+ 0.3+ 190105 104 0.0 0.3+ 190108 C42 0.4+ 0.7- 190226 H45 0.2- 0.3+ 190105 C77 0.4- 0.1+ 190108 L29 0.3- 0.0 190228 L27 0.5- 0.4- 190105 C77 0.5- 0.4+ 190108 L29 0.7- 0.1+ 190228 L27 0.7- 0.3- 190105 L01 1.2+ 0.3+ 190108 L29 0.3- 0.3+ 190228 L27 0.1- 0.1- 190105 595 0.0 0.4+ 190109 T08 0.9- 0.6+ 190308 Q11 0.1- 0.2+ 190105 595 0.4- 0.1- 190109 T08 0.3- 0.1- 190308 Q11 0.2- 0.0 190105 595 0.2- 0.2- 190109 T08 1.5- 0.3+ 190308 Q11 0.1- 0.0 190105 595 0.5- 0.1- 190109 T08 0.6- 0.2+ 190309 A77 1.1+ 0.3+ 190105 L01 0.8+ 0.3+ 190109 Q11 0.3- 0.1+ 190309 A77 0.3+ 0.0 190106 W88 0.4+ 0.5+ 190109 Q11 0.5- 0.2+ 190323 L27 0.1- 0.2- 190106 W88 0.3- 0.2- 190110 Q21 0.4- 0.7+ 190323 L27 0.1+ 0.3- 190106 W96 0.6- 0.3+ 190110 Q21 0.1- 0.6+ 190106 W96 0.6- 0.8+ 190111 L27 0.6- 0.4+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2019 Apr. 4