OAA computing section circular NK 1094 P/2001 T4 (NEAT)
The following improved orbital elements, by S. Nakano, are from 105 observations 2001 Aug. 27 to 2004 Aug. 16. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.56 arc second. See previous orbits in NK 899 and NK 1021. Epoch = 2002 May 6.0 TT T = 2002 May 20.61231 +/- 0.01905 (m.e.) TT Peri. = 321.85310 +/- 0.00088 Node = 64.50025 +/- 0.00012 (2000.0) Inc. = 15.36284 +/- 0.00005 q = 8.5642080 +/- 0.0000323 AU e = 0.3843960 +/- 0.0000166 a = 13.9118779 +/- 0.0000272 AU n' = 0.01899439 +/- 0.00000006 P = 51.889 +/- 0.0001523 years (+/- 0.06 day) The predicted orbit for the 2053 return is as follows: T = 2053 Nov. 25.86983 TT Epoch = 2053 Dec. 4.0 TT Peri. = 322.07691 e = 0.3798238 Node = 64.29573 (2000.0) a = 13.7838180 AU Inc. = 15.37291 n'= 0.01925971 q = 8.5483954 AU P = 51.175 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2001/ 011121 360 1.0+ 0.3+ 021121 644 0.3- 0.6+ 010827 699 (0.8+ 5.5-) 011121 360 1.0+ 0.4- 021121 644 0.3- 0.4+ 010827 699 (0.8+ 2.4-) 011121 360 0.9+ 0.7- 021121 644 0.0 0.2+ 010827 699 1.1- 1.6+ 2002/ 021122 644 0.4- 0.3+ 010827 699 1.6+ 0.1- 020111 360 0.3- 0.3- 021122 644 0.5- 0.4+ 011015 644 0.4- 0.5- 020111 360 0.7+ 1.5+ 021122 644 0.2- 0.9+ 011015 644 0.3+ 0.7- 020111 360 0.2+ 0.3+ 2003/ 011015 644 0.0 1.0- 020117 568 0.3+ 1.0- 031029 699 1.0+ 0.6- 011015 046 (3.2+ 0.6+) 020117 568 0.5+ 0.9- 031029 699 (1.6+ 2.2-) 011015 046 0.3- 1.8- 020117 568 0.3- 0.3+ 031029 691 0.3+ 0.2- 011016 644 0.3+ 0.4+ 020117 568 0.1+ 0.7- 031029 699 (2.1+ 0.2+) 011016 644 0.2- 0.1- 020117 568 0.0 0.5- 031029 691 0.3- 0.1- 011016 644 0.5+ 0.6+ 020117 568 0.7+ 0.1- 031029 699 (2.8+ 1.7-) 011018 644 0.1+ 0.6+ 020817 568 0.1- 0.1+ 031029 691 0.5+ 0.2+ 011018 644 0.2+ 0.6+ 020817 568 0.0 0.1+ 031102 204 0.6+ 0.2- 011018 644 0.0 0.8+ 020817 568 0.2- 0.0 031102 204 1.2+ 0.3+ 011021 644 1.3- 0.0 020912 360 0.0 0.9- 031117 360 0.1- 0.0 011021 644 0.8- 0.2+ 020912 360 0.4+ 0.2- 031117 360 0.7+ 0.3- 011023 644 (0.6+ 2.2+) 020912 360 0.4- 0.8- 031117 360 0.5- 0.1+ 011023 644 (0.8+ 2.8+) 021005 360 0.1+ 0.3+ 031121 695 0.3- 0.3+ 011023 644 1.1+ 1.6+ 021005 360 0.0 0.2- 031121 695 0.4- 0.5+ 011023 402 0.3- 0.2- 021009 699 0.6+ 0.3- 031123 360 0.2+ 0.1- 011023 402 0.2- 0.9- 021009 699 0.1+ 0.2- 031123 360 0.0 0.2+ 011023 402 (0.5+ 2.3-) 021009 699 0.0 0.6- 031213 620 0.7- 0.9- 011025 402 0.6+ 0.7- 021009 644 0.5- 0.1+ 031222 691 0.7- 0.2+ 011025 402 0.6- 0.6- 021009 699 0.7+ 0.0 031222 691 0.4+ 0.1- 011025 402 0.2- 0.2+ 021009 644 0.1- 0.1+ 031222 691 0.4+ 0.6- 011029 568 0.4- 0.0 021009 644 0.2- 0.2+ 031223 215 0.4- 1.5- 011029 568 0.5- 0.3- 021013 204 0.4+ 0.8+ 031228 360 0.6+ 1.4- 011029 568 0.2- 0.1+ 021013 204 0.5+ 0.1- 031228 360 0.0 0.9- 011029 568 0.3- 0.2+ 021013 204 0.5+ 0.2+ 2004/ 011029 568 0.0 0.1- 021014 360 0.2- 0.3- 040112 644 0.0 0.4- 011029 568 0.4- 0.1+ 021014 360 1.0- 0.1- 040112 644 0.1- 0.3+ 011029 568 0.1- 0.1+ 021014 360 0.2+ 0.3- 040112 644 0.2- 0.4+ 011029 568 0.5- 0.1- 021029 644 0.7- 0.7+ 040209 204 0.0 0.9+ 011114 402 0.8- 0.6+ 021029 644 0.0 0.9+ 040815 568 0.3- 0.6+ 011114 402 0.4- 0.3+ 021029 644 0.2- 1.3+ 040815 568 0.1- 0.7+ 011114 402 0.4- 0.5+ 021106 360 0.2- 0.1- 040816 568 0.4- 0.6+ 011120 204 (3.8- 0.4+) 021106 360 0.5+ 0.6- 040816 568 0.3- 0.6+ 011120 204 0.8+ 0.2- 021106 360 0.3- 0.3- ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2004 Sept. 5