OAA computing section circular NK 1694 207P/NEAT (2001 J1 = 2008 T5) [Temporary numbered]
The following improved orbital elements, by S. Nakano, are from 73 observations 2000 to 2008. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.87 arc second. See an orbit in NK 802. The delta-T correction is -0.54 day for the prediction. Epoch = 2008 Oct. 21.0 TT T = 2008 Nov. 6.25522 +/- 0.00025 (m.e.) TT Peri. = 271.17325 +/- 0.00021 Node = 200.67445 +/- 0.00022 (2000.0) Inc. = 10.15002 +/- 0.00006 q = 0.9441512 +/- 0.0000032 AU e = 0.7571412 +/- 0.0000008 a = 3.8876546 +/- 0.0000047 AU n' = 0.12857974 +/- 0.00000023 P = 7.665 +/- 0.0000139 years T = 2001 Mar. 14.10536 TT Epoch = 2001 Apr. 1.0 TT Peri. = 271.02222 e = 0.7582907 Node = 200.79937 (2000.0) a = 3.8768606 AU Inc. = 10.15772 n'= 0.12911711 q = 0.9370732 AU P = 7.633 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2000/ 010513 046 0.2+ 0.9+ 010517 402 2.0- 0.6- 001007 691 0.1- 0.7- 010513 046 (0.2- 2.1+) 010517 402 0.6- 0.7+ 001007 691 0.2+ 0.1- 010513 046 (0.8+ 2.5+) 010519 360 0.7- 0.2- 001007 691 0.2+ 0.1- 010513 046 (2.3- 2.1+) 010519 360 0.5- 0.2+ 2001/ 010513 046 (4.6+ 2.5+) 010519 360 1.0- 0.5- 010511 608 0.5- 0.2+ 010514 649 0.1- 0.0 010519 300 0.4+ 0.9+ 010511 608 0.5- 0.1+ 010514 649 1.3+ 0.3- 010519 300 (2.8+ 3.4-) 010511 608 1.0- 0.6- 010514 649 0.3+ 0.1- 010519 046 (1.2+ 2.1-) 010511 557 1.8+ 1.1- 010515 926 1.4- 1.4+ 010519 046 1.3+ 1.8- 010511 557 0.7+ 1.0- 010515 926 (0.9- 2.1+) 010519 046 0.0 0.1- 010511 557 1.4- 0.7- 010515 926 1.5- 1.2+ 010519 046 1.1+ 0.1- 010511 046 (3.8- 2.7+) 010515 926 0.7- 1.0+ 010527 290 0.1+ 0.6+ 010511 046 (3.6- 1.3+) 010515 926 1.6- 1.4+ 010527 290 0.5+ 0.8+ 010511 046 1.9- 1.7- 010516 360 0.4- 0.7+ 010527 290 0.0 0.7+ 010511 046 0.1- 1.6- 010516 360 0.8+ 1.0+ 2008/ 010511 046 0.4+ 1.5- 010516 360 1.0+ 0.1+ 081015 349 0.4- 0.1+ 010512 649 0.2- 0.0 010516 046 (0.4- 2.3+) 081015 349 0.2- 0.2- 010512 649 0.7+ 0.0 010516 046 1.8+ 0.2- 081015 349 0.2+ 0.5- 010512 046 1.3+ 0.6- 010516 046 1.0+ 1.9+ 081017 349 0.9+ 0.5+ 010512 046 0.7- 0.4+ 010516 046 0.4+ 0.5+ 081017 349 0.8+ 0.7+ 010512 046 (2.2- 0.1+) 010516 046 (2.5- 0.6+) 081017 349 0.4+ 0.8+ 010512 046 0.2+ 0.1- 010516 046 1.5+ 0.7+ 081018 367 0.9- 0.1- 010512 118 (3.2- 0.2+) 010517 926 1.3+ 1.8- 081018 367 (2.3- 0.6+) 010512 201 (2.1+ 1.2-) 010517 926 1.8- 1.2- 081018 349 0.3- 0.3+ 010512 118 0.6- 1.4- 010517 926 1.3- 2.0+ 081018 349 0.1- 0.0 010512 201 (6.0+ 1.2+) 010517 926 0.3- 0.8+ 081018 349 0.2+ 0.1+ 010513 734 0.9+ 1.0- 010517 926 0.4+ 1.1+ 081022 H06 1.0- 0.1- 010513 734 0.2- 1.2- 010517 867 0.6- 0.3+ 081022 H06 0.6- 0.5- 010513 734 (1.0- 2.5-) 010517 867 1.0- 0.5+ 081026 349 0.4+ 0.0 010513 118 1.0+ 1.4- 010517 867 0.8+ 0.2- 081026 349 0.4+ 0.2- 010513 118 1.3+ 0.5+ 010517 402 (7.6+ 2.6-) 081026 349 0.6+ 0.1- 010513 118 0.2+ 0.4- 010517 402 (1.2- 2.6-) ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2008 Nov. 4