Nakano Note (Nakano wa Kangaeru noda) NK 3011 323P/SOHO (1999 X3 = 2004 E2 = 2008 K10 = 2012 Q2)
The following improved orbital elements, by S. Nakano, are from 48 observations 1999 to 2012. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 8.80 arc seconds. See the previous orbit in NK 1774. Epoch = 2012 Aug. 21.0 TT T = 2012 Aug. 20.16513 +/- 0.00008 (m.e.) TT Peri. = 353.16541 +/- 0.08537 Node = 324.06817 +/- 0.08469 (2000.0) Inc. = 6.24847 +/- 0.01357 q = 0.0481383 +/- 0.0000082 AU e = 0.9815711 +/- 0.0000031 a = 2.6121088 +/- 0.0002401 AU n' = 0.23346253 +/- 0.00003219 P = 4.222 +/- 0.0005821 years (+/- 0.21 day) T = 1999 Dec. 12.87319 TT Epoch = 1999 Dec. 8.0 TT Peri. = 352.80603 e = 0.9802811 Node = 324.28133 (2000.0) a = 2.6251770 AU Inc. = 6.08594 n'= 0.23172143 q = 0.0517657 AU P = 4.253 years T = 2004 Mar. 12.32882 TT Epoch = 2004 Mar. 16.0 TT Peri. = 353.15060 e = 0.9816310 Node = 324.07253 (2000.0) a = 2.6117259 AU Inc. = 6.25760 n'= 0.23351387 q = 0.0479747 AU P = 4.221 years T = 2008 May 31.32655 TT Epoch = 2008 May 14.0 TT Peri. = 353.19627 e = 0.9817693 Node = 324.04655 (2000.0) a = 2.6104856 AU Inc. = 6.28893 n'= 0.23368030 q = 0.0475910 AU P = 4.218 years The predicted orbit for the 2016 return is as follows: T = 2016 Nov. 23.95001 TT Epoch = 2016 Nov. 28.0 TT Peri. = 353.01759 e = 0.9847717 Node = 324.31308 (2000.0) a = 2.5840176 AU Inc. = 5.52126 n'= 0.23727986 q = 0.0393503 AU P = 4.154 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1999/ 080530 249 3.5+ 8.7- Y 120820 249 17.3+ 10.2- Y 991212 249 3.2+ 6.3- Y 080530 249 1.0+ 5.5- Y 120820 249 13.8+ 0.1+ Y 991212 249 8.2+ 6.0+ Y 080530 249 1.0+ 3.8- Y 120820 249 6.7- 0.9- Y 991212 249 4.2- 4.1+ Y 080530 249 2.9+ 4.7- Y 120820 249 22.8+ 0.6+ Y 991212 249 2.0- 0.6+ Y 080530 249 3.2+ 4.9- Y 120820 249(41.4- 10.6-)Y 991212 249 2.1+ 2.5+ Y 080530 249 6.2+ 9.0- Y 120820 249 1.5+ 21.9- Y 991212 249 5.8- 7.7+ Y 080531 249 5.6+ 9.0- Y 120820 249 12.8- 20.1- Y 991212 249 0.4- 1.5+ Y 080531 249 0.8- 3.3- Y 120820 249 5.6+ 14.1+ Y 991212 249 8.3+ 6.5- Y 080531 249 4.8+ 5.6- Y 120820 249(0.04+ 0.07-)Y 991212 249 10.9- 0.2- Y 2012/ 120820 249 13.2- 18.4- Y 2004/ 120819 249 12.7- 10.9+ Y 120820 249(28.5- 34.2-)Y 040312 249(41.2- 14.5-)Y 120819 249(23.8- 31.6+)Y 120820 249 3.5- 2.3+ Y 040312 249 0.8- 19.4+ Y 120820 249 11.5- 13.6+ Y 120820 249 13.5+ 2.3+ Y 040312 249(12.2+ 28.3+)Y 120820 249 15.0- 9.3+ Y 120820 249(0.04+ 0.02-)Y 040312 249 18.1- 0.2- Y 120820 249 11.2- 17.7+ Y 120820 249(67.5+ 17.8-)Y 040312 249 0.2- 1.0+ Y 120820 249 9.4- 3.4+ Y 120820 249(20.0+ 47.9-)Y 040312 249 10.3+ 7.2+ Y 120820 249 0.5+ 11.8+ Y 120820 249 4.9+ 5.5- Y 040312 249(12.4+ 28.9+)Y 120820 249 1.4+ 1.0+ Y 120820 249(36.5+ 54.8-)Y 040312 249 5.8- 13.9+ Y 120820 249 0.4+ 4.0+ Y 120820 249 4.1+ 16.7- Y 2008/ 120820 249 8.0+ 0.4- Y 120820 249(61.8+ 37.2-)Y 080530 249 9.2- 0.1- Y 120820 249 1.9- 0.8+ Y 080530 249 1.4+ 1.5+ Y 120820 249 5.3- 4.5+ Y ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2015 Oct. 31