Nakano Note (Nakano wa Kangaeru noda) NK 3687 P/LINEAR-Skiff (2001 R6 = 2018 R1)
The following improved orbital elements, by S. Nakano, are from 106 observations 2001 to 2018. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.69 arc second. Residuals of recovery observations from the prediction in NK 871 (= HICQ 2018) were -539" for Right Ascension and -414" for Declination with the delta-T correction = +0.33 day. Epoch = 2018 Oct. 9.0 TT T = 2018 Oct. 4.58420 +/- 0.00220 (m.e.) TT Peri. = 308.47755 +/- 0.00093 Node = 67.33507 +/- 0.00018 (2000.0) Inc. = 17.37955 +/- 0.00005 q = 2.1910632 +/- 0.0000025 AU e = 0.4759549 +/- 0.0000006 a = 4.1810588 +/- 0.0000068 AU n' = 0.11528549 +/- 0.00000028 P = 8.549 +/- 0.0000207 years T = 2001 Oct. 27.09307 TT Epoch = 2001 Oct. 18.0 TT Peri. = 306.19263 e = 0.4859588 Node = 70.32214 (2000.0) a = 4.1146286 AU Inc. = 17.34506 n'= 0.11808864 q = 2.1150886 AU P = 8.346 years [ T = 2010 Mar. 26.33832 TT Epoch = 2010 Mar. 25.0 TT Peri. = 308.45054 e = 0.4776950 Node = 67.32363 (2000.0) a = 4.1712005 AU Inc. = 17.38660 n'= 0.11569444 q = 2.1786388 AU P = 8.519 years ] The predicted orbit for the 2027 return is as follows: T = 2027 Apr. 26.11514 TT Epoch = 2027 Apr. 25.0 TT Peri. = 308.61194 e = 0.4761509 Node = 67.21248 (2000.0) a = 4.1794832 AU Inc. = 17.38595 n'= 0.11535069 q = 2.1894186 AU P = 8.544 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2001/ 010928 372 (2.1- 1.0+) 011121 360 0.2- 0.4- 010819 704 1.0+ 0.8+ 011008 170 (5.4- 0.1-) 011121 342 0.3+ 0.0 010819 704 0.4+ 0.4+ 011008 170 1.2+ 0.9- 011202 170 0.2+ 1.3+ 010819 704 0.9+ 0.6+ 011010 342 0.3- 0.1+ 011215 704 0.0 0.5- 010819 704 0.9+ 0.4+ 011010 342 0.1+ 0.2- 011215 704 0.2- 0.9- 010911 704 1.1+ 0.3+ 011012 372 1.0- 0.3- 011215 704 1.2+ 0.4+ 010911 704 (2.0+ 2.3-) 011013 360 0.2- 0.1+ 011215 704 1.2+ 0.3+ 010911 704 0.7+ 1.4- 011013 360 0.0 0.0 011215 587 1.1+ 0.4+ 010911 704 1.5+ 0.8- 011013 372 0.1+ 0.2- 011215 587 (1.5+ 2.5+) 010911 704 0.7+ 1.6- 011013 372 1.2- 0.0 011215 587 0.1+ 0.6- 010916 704 1.2+ 0.1- 011014 402 0.1+ 0.2- 011219 360 0.1- 0.2- 010916 704 0.2- 0.4- 011014 402 0.3- 0.0 011219 360 0.1- 0.3- 010916 704 0.0 1.0- 011014 402 0.9+ 0.2- 2002/ 010925 699 (2.7- 1.7+) 011015 704 0.6- 0.3+ 020105 699 1.5+ 0.2- 010925 699 (2.5- 1.7+) 011015 704 0.0 1.3+ 020105 699 (2.5+ 1.9+) 010925 699 0.8- 1.0+ 011015 704 0.3+ 0.2- 020105 699 1.9+ 0.5+ 010925 699 0.7- 1.0+ 011015 704 0.5+ 0.4+ 020105 699 (2.3+ 0.8+) 010925 699 1.8- 0.4+ 011018 170 1.2- 0.6+ 020113 705 0.7- 0.4- 010925 699 1.7- 0.5+ 011018 170 0.4- 0.8+ 020113 705 0.7- 0.6- 010925 699 (3.0- 0.5+) 011023 402 0.3- 0.1- 020113 705 0.9- 0.0 010925 699 (2.8- 0.5+) 011023 402 0.6- 0.1+ 020113 360 0.2- 0.2+ 010925 322 (5.2- 1.9-) 011023 402 0.2- 0.0 020113 360 0.5- 0.1+ 010925 322 (3.6- 0.5+) 011024 360 0.1+ 0.6- 020113 360 0.5- 0.6- 010925 322 0.8- 1.4+ 011024 360 0.0 0.7- 020114 704 0.4+ 0.5+ 010926 699 1.8- 0.8+ 011025 352 0.5+ 1.4- 020114 704 0.2+ 0.8- 010926 699 1.7- 0.1+ 011025 352 1.0+ 0.8- 020114 699 (0.3- 2.1+) 010926 699 0.9- 1.0+ 011025 352 0.2- 0.1+ 020114 704 0.4- 0.2- 010926 699 1.1- 0.9+ 011107 644 0.3- 1.0- 020114 699 1.0- 1.3+ 010926 711 0.2+ 0.6+ 011107 644 0.5+ 0.4- 020114 704 0.9+ 0.4- 010926 711 0.1- 0.2+ 011107 644 0.5- 0.9- 020114 704 (2.2+ 1.4+) 010926 711 0.2+ 0.0 011107 644 0.4+ 0.4- 020114 699 (1.5+ 2.2+) 010927 711 0.3- 0.5+ 011107 644 0.5- 0.8- 020114 699 (7.0+ 0.6-) 010927 711 0.1+ 0.5+ 011107 644 0.3+ 0.6- 020201 360 0.3+ 0.6+ 010927 711 0.1- 0.4+ 011116 699 0.2+ 1.9+ 020201 360 0.0 0.2+ 010927 333 0.7- 0.2+ 011116 699 0.0 1.2+ 020201 360 0.0 0.1+ 010927 333 0.2+ 0.6- 011116 699 0.9- 1.5+ 2018/ 010927 333 0.0 0.7- 011116 699 0.2- 0.4+ 180907 J04 0.8+ 0.6- 010927 413 0.4+ 0.1- 011120 402 0.1- 1.0- 180907 J04 0.3+ 0.5- 010927 413 0.5+ 0.4- 011120 402 0.3+ 0.2+ 180907 J04 0.6+ 0.3- 010927 413 0.6+ 0.3- 011120 402 0.5- 0.4+ 180908 J04 0.5- 0.6- 010927 413 0.6+ 0.7- 011121 342 0.0 0.5+ 180908 J04 0.5+ 0.3- 010927 413 1.0+ 0.2+ 011121 360 0.1- 0.2- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2018 Sept. 10