Nakano Note (Nakano wa Kangaeru noda) NK 3889 C/SOHO (2002 R5 = 2008 L6 = 2014 E3)
The following improved orbital elements, by S. Nakano, are from 69 observations 2002 to 2014, including planetary perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas, Vesta, and non-gravitational effect of style II. The mean residual is +/- 3.55 arc seconds. Revised observations (and computational advise) were provided from R. Kracht, measurements by K. Battams. There is another combination C/2002 R5 = 2008 L7 = 2014 E4. Note; designations C/2014 E3 and 2014 E4 were given for computation, temporally. Epoch = 2014 Mar. 4.0 TT T = 2014 Mar. 7.63395 +/- 0.00007 (m.e.) TT Peri. = 59.32640 +/- 0.01468 Node = 359.23550 +/- 0.01561 (2000.0) Inc. = 12.07119 +/- 0.00496 q = 0.0451565 +/- 0.0000005 AU e = 0.9859001 +/- 0.0000001 a = 3.2026134 +/- 0.0000113 AU n' = 0.17196787 +/- 0.00000092 P = 5.731 +/- 0.0000303 years A1 = 0.000 (assumed) A2 = -0.10243 +/- 0.00005 A3 = +1.309 +/- 0.002 T = 2002 Sept. 5.79092 TT Epoch = 2002 Sept. 3.0 TT Peri. = 45.57396 e = 0.9853373 Node = 13.39134 (2000.0) a = 3.2248941 AU Inc. = 14.18033 n'= 0.17018877 q = 0.0472855 AU P = 5.791 years T = 2008 June 10.18077 TT Epoch = 2008 June 23.0 TT Peri. = 58.81524 e = 0.9856433 Node = 359.77317 (2000.0) a = 3.2073160 AU Inc. = 12.12484 n'= 0.17158980 q = 0.0460464 AU P = 5.744 years The predicted orbit for the 2019 return is as follows: Difference is 22 days between a prediction (T= 2019 Dec. 12; span 2002-2008) in NK 3215 and below prediction. T = 2019 Nov. 20.70882 TT Epoch = 2019 Nov. 13.0 TT Peri. = 69.79945 e = 0.9864092 Node = 348.65436 (2000.0) a = 3.1853655 AU Inc. = 11.26711 n'= 0.17336650 q = 0.0432918 AU P = 5.685 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2002/ 080610 249 0.3- 1.2- Y 140307 249 (0.7- 13.6-)Y 020905 249 8.6- 1.1- Y 080610 249 4.6- 3.8- Y 140307 249 (1.0+ 28.6+)Y 020905 249 2.9- 4.0- Y 080610 249 1.4- 3.4- Y 140307 249(22.8+ 0.2+)Y 020905 249 1.5- 0.9+ Y 080610 249 0.8+ 2.5- Y 140307 249 (9.7+ 16.4+)Y 020905 249 1.6+ 18.6- Y 080610 249 4.9- 0.6+ Y 140307 249 (7.9+ 1.9-)Y 020905 249 5.6- 6.0+ Y 080610 249 7.3- 2.5- Y 140307 249 (3.4- 18.4+)Y 020905 249 1.2+ 4.7+ Y 080610 249 3.8- 2.8- Y 140307 249 (5.7+ 9.3+)Y 020905 249 2.9- 5.7+ Y 080610 249 0.8+ 3.4- Y 140307 249 (6.7+ 23.7+)Y 020905 249 0.6+ 2.6+ Y 080610 249 0.1- 0.3- Y 140307 249 (4.0- 7.4+)Y 020905 249 3.7- 4.2+ Y 080610 249 5.4+ 1.3- Y 140307 249(17.4+ 27.4+)Y 020905 249 5.6- 8.4+ Y 080610 249 0.6+ 0.2- Y 140307 249(11.3- 2.2-)Y 020905 249 2.3+ 1.0+ Y 080610 249 0.2+ 2.6+ Y 140307 249 (5.8+ 24.8+)Y 020905 249 4.2- 2.4+ Y 080610 249 0.5+ 0.4- Y 140307 249(25.7+ 24.1+)Y 020905 249 2.4- 1.5- Y 080610 249 1.2- 0.9+ Y 140307 249 (4.2- 19.1+)Y 020905 249 5.4- 3.8+ Y 080610 249 1.6+ 0.2- Y 140307 249(22.3- 7.5+)Y 020905 249 6.2- 5.8+ Y 080610 249 2.8+ 4.6+ Y 140307 249 (6.7- 5.8+)Y 020905 249 2.2- 3.2- Y 080610 249 1.1- 0.6+ Y 140307 249(33.9- 24.1+)Y 020905 249(20.1- 33.1-)Y 080610 249 0.8+ 0.6+ Y 140307 249 (1.0- 15.3+)Y 020905 249(15.1- 26.2-)Y 080610 249 2.5+ 1.4- Y 140307 249 (5.3+ 23.9+)Y 020905 249 (0.7- 25.7-)Y 080610 249 4.7+ 1.9+ Y 140307 249(16.0+ 21.1+)Y 020905 249(47.1- 11.0-)Y 080610 249 3.7+ 1.6+ Y 140307 249 (4.4+ 7.7+)Y 020905 249(37.6- 15.6-)Y 2014/ 140307 249(13.7- 15.0+)Y 020905 249(14.4- 13.2-)Y 140307 249 1.2+ 0.7+ Y 140307 249 (1.8+ 13.7+)Y 020905 249(38.4- 5.7-)Y 140307 249 5.4+ 5.8+ Y 140307 249 (4.1+ 10.4+)Y 020905 249(41.6- 27.9-)Y 140307 249 0.5+ 1.7+ Y 140307 249 (1.0- 7.8-)Y 020905 249(17.9- 17.7-)Y 140307 249 7.2+ 2.6- Y 140307 249(10.9- 7.8+)Y 020905 249(41.9- 35.1-)Y 140307 249 4.4+ 3.7+ Y 140307 249 (0.4+ 5.6+)Y 020905 249(41.7- 28.4-)Y 140307 249 4.6+ 1.6+ Y 140307 249(16.8+ 10.9+)Y 020905 249(46.3- 5.2-)Y 140307 249 1.4+ 1.2+ Y 140307 249 (7.2+ 23.7+)Y 020905 249(54.7- 30.4-)Y 140307 249 3.0+ 0.1- Y 140307 249 (9.6+ 34.5+)Y 020905 249(57.1- 36.8-)Y 140307 249 6.2+ 2.6+ Y 140307 249(19.3+ 29.2+)Y 020906 249(51.7- 1.5+)Y 140307 249 2.2- 0.0 Y 140307 249(28.0+ 16.3+)Y 020906 249(79.0- 67.6-)Y 140307 249 1.4- 3.1- Y 140307 249 (3.9- 29.3+)Y 020906 249(62.6- 34.0-)Y 140307 249 0.1+ 1.8- Y 140307 249(13.3- 9.4+)Y 020906 249(61.6- 10.7-)Y 140307 249 3.4- 0.4+ Y 140307 249 (1.2+ 5.6-)Y 2008/ 140307 249 0.3+ 1.8+ Y 140307 249 (3.9+ 12.6+)Y 080610 249 3.5+ 3.8+ Y 140307 249 2.7- 0.2- Y 140307 249(17.3+ 21.9+)Y 080610 249 0.2+ 2.2+ Y 140307 249 1.6- 2.6- Y 140307 249(39.5+ 13.1+)Y 080610 249 0.0 1.8+ Y 140307 249 3.0- 2.7- Y 140307 249 (1.1- 13.5+)Y 080610 249 2.1+ 2.6+ Y 140307 249 1.0- 3.6- Y 140307 249(27.2+ 18.4+)Y 080610 249 1.1- 1.3+ Y 140307 249 4.3- 1.9+ Y 140307 249(16.7+ 1.0+)Y 080610 249 0.7- 2.8- Y 140307 249 3.7- 0.7- Y 140307 249 (4.4- 10.2+)Y 080610 249 0.7+ 1.7+ Y 140307 249 3.3- 1.5- Y 140307 249(21.2+ 10.1+)Y 080610 249 3.8- 2.5+ Y 140307 249 2.2- 1.4- Y 140307 249(52.6+ 6.8+)Y 080610 249 1.6- 1.3- Y 140307 249 8.6- 1.3- Y ( ) -------- Rejected Obs.
Associate of the CBAT Late edtion Syuichi Nakano 2019 July 18