Nakano Note (Nakano wa Kangaeru noda) NK 4363 P/WISE (2010 B2 = 2020 Y1)
The following improved orbital elements, by S. Nakano, are from 57 observations 2010 to 2020. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.49 arc second. See the previous orbits in NK2305, NK 3440, NK 4187, NK 4315 and CBET 4904 (same orbit). Epoch = 2020 Dec. 17.0 TT T = 2020 Dec. 5.37909 +/- 0.00030 (m.e.) TT Peri. = 155.92040 +/- 0.00020 Node = 0.84892 +/- 0.00009 (2000.0) Inc. = 8.93101 +/- 0.00004 q = 1.6175442 +/- 0.0000028 AU e = 0.4799425 +/- 0.0000009 a = 3.1103178 +/- 0.0000076 AU n' = 0.17967884 +/- 0.00000065 P = 5.485 +/- 0.0000200 years T = 2009 Dec. 21.91395 TT Epoch = 2010 Jan. 4.0 TT Peri. = 156.04795 e = 0.4803264 Node = 0.87407 (2000.0) a = 3.1105626 AU Inc. = 8.93164 n'= 0.17965763 q = 1.6164773 AU P = 5.486 years T = 2015 June 13.85697 TT Epoch = 2015 June 27.0 TT Peri. = 155.95214 e = 0.4812375 Node = 0.85340 (2000.0) a = 3.1073889 AU Inc. = 8.93873 n'= 0.17993294 q = 1.6119967 AU P = 5.478 years The predicted orbit for the 2026 return is as follows: T = 2026 May 30.53949 TT Epoch = 2026 June 9.0 TT Peri. = 155.81914 e = 0.4790370 Node = 0.81722 (2000.0) a = 3.1128225 AU Inc. = 8.92873 n'= 0.17946202 q = 1.6216652 AU P = 5.492 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2010/ 100208 291 0.4- 0.1+ 100321 I33 0.8+ 0.2- 100122 C51 0.9- 0.3- 100208 291 0.4+ 0.3- 100321 I33 0.7+ 0.1- 100122 C51 0.5- 0.8- 100208 568 0.2+ 0.1- 100321 I33 1.0+ 0.3- 100122 C51 1.0- 0.6- 100208 568 0.2+ 0.1- 100321 I33 0.6+ 0.4- 100123 C51 1.1- 0.2- 100208 568 0.2+ 0.0 100407 E85 0.7- 0.1+ 100123 C51 1.0- 0.6+ 100212 H06 0.9- 0.4- 100407 E85 0.6- 0.3- 100123 C51 0.0 0.3+ 100212 H06 0.3- 0.2- 100407 E85 0.4- 0.4- 100123 C51 0.8- 0.1+ 100212 H06 0.6+ 0.3+ 100407 E85 0.3+ 0.4- 100123 C51 0.9- 0.5+ 100213 204 0.2- 0.6+ 100506 F51 0.8- 0.3+ 100123 C51 0.3- 0.4+ 100213 204 0.4- 0.1- 100513 F51 0.8- 0.6+ 100123 C51 1.0- 0.6+ 100220 E85 (2.7- 0.9-) 2015/ 100123 C51 0.1+ 0.6+ 100220 E85 0.5- 0.2+ 150603 W84 0.9+ 0.9- 100124 C51 0.1+ 0.1+ 100220 568 0.2+ 0.1- 2020/ 100124 C51 0.3- 1.2+ 100220 568 0.2+ 0.1- 201219 G37 1.2- 0.4+ 100207 H21 0.9+ 0.5- 100313 D90 0.3- 0.0 201219 G37 0.1+ 0.1+ 100207 H21 0.5+ 0.2+ 100313 D90 0.2- 0.6+ 201219 H06 0.7+ 0.6- 100207 H21 0.3+ 0.9+ 100313 D90 0.1- 0.6+ 201219 H06 0.6+ 1.1- 100207 568 0.0 0.0 100317 H06 0.7+ 0.1+ 201220 G37 0.4+ 0.3- 100207 568 0.0 0.0 100317 H06 0.0 0.4+ 201220 G37 1.6- 1.0+ 100207 568 0.0 0.0 100319 A79 1.2- 0.8+ 100208 291 0.6- 0.3+ 100319 A79 0.9- 1.0- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2021 Jan. 10