OAA computing section circular NK 1003 C/2000 Y1 (Tubbiolo)

The following improved orbital elements, by S. Nakano, are from 88 observations 2000 Oct. 24 to 2002 Nov. 5. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.68 arc second. Epoch = 2001 Feb. 20.0 TT T = 2001 Feb. 2.21192 +/- 0.01156 (m.e.) TT Peri. = 181.73594 +/- 0.00071 Node = 239.39575 +/- 0.00003 (2000.0) Inc. = 137.98154 +/- 0.00010 q = 7.9747411 +/- 0.0000435 AU e = 1.0031505 +/- 0.0000309 1/a = -0.0003951 +/- 0.0000039 1/AU origin = +0.000052 (Q= 8) future = -0.000007 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2000/ 001222 867 0.4- 0.5+ 010917 699 0.7+ 1.7+ 001024 704 0.5- 1.1+ 001222 867 0.4- 0.1+ 010917 699 0.5- 1.0+ 001024 704 1.5- 0.1+ 001222 867 0.1- 0.1+ 010917 699 0.8- 0.4+ 001024 704 0.3- 1.3- 001224 691 0.6- 0.6- 010917 699 1.1- 0.5+ 001024 704 0.0 0.2+ 001224 691 0.6- 0.3- 011014 867 0.3- 0.2- 001102 704 1.3+ 1.0+ 001224 691 0.7- 0.2- 011014 867 0.3- 0.4- 001102 704 0.8+ 0.5+ 001225 372 1.1- 0.6+ 011014 867 1.0- 0.4- 001102 704 0.2+ 0.9+ 001226 372 0.7- 0.2+ 011016 704 0.3- 0.6- 001102 704 1.3+ 0.4- 001229 699 0.4- 0.6+ 011016 704 1.1+ 0.5+ 001129 704 1.6- 0.2+ 001229 699 1.0- 0.5+ 011016 704 0.8+ 0.5+ 001129 704 0.5- 1.3+ 001229 699 (0.0 2.8+) 011016 704 1.0+ 0.4- 001129 704 (1.3+ 2.1+) 001229 699 1.0- 0.6+ 011016 704 1.1+ 0.6- 001129 704 0.0 0.9+ 001229 372 1.5- 1.1+ 011023 644 1.0- 0.0 001129 704 (0.5+ 2.1+) 001229 360 0.1- 0.1+ 011023 644 0.9- 0.1- 001216 691 0.1- 0.6+ 001229 360 0.4- 0.2+ 011023 644 1.0- 0.8- 001216 691 0.1+ 0.0 001229 402 0.7+ 0.6+ 011029 644 0.3+ 0.7+ 001216 691 0.3- 1.0- 001229 402 0.4+ 1.1+ 011029 644 0.1- 0.1- 001217 691 0.4+ 1.0- 001229 402 0.7- 0.1- 011029 644 0.2+ 0.7+ 001217 691 0.7+ 1.0- 2001/ 011120 867 0.2- 0.1- 001217 691 0.8+ 0.7- 010101 691 (1.8+ 2.3+) 011120 867 0.2+ 0.0 001217 691 0.4- 1.4- 010101 691 (2.0+ 0.8+) 011120 867 0.0 0.1- 001217 691 1.2+ 0.9- 010101 691 0.4+ 1.2- 011121 360 0.2- 0.6- 001217 691 0.8+ 1.2- 010101 691 1.9+ 0.1+ 011121 360 0.0 0.0 001217 557 0.6+ 0.1- 010104 691 1.0+ 0.4+ 2002/ 001217 557 0.7+ 0.1- 010104 691 0.1+ 0.1+ 021014 360 0.3- 0.0 001217 557 0.2+ 0.7- 010104 691 0.4- 0.2- 021014 360 0.4+ 0.8+ 001217 557 0.5+ 0.7- 010116 372 (2.3- 0.0 ) 021014 360 0.4+ 0.2- 001218 691 0.2+ 1.2- 010121 360 0.3- 0.3- 021105 360 0.8+ 0.1+ 001218 691 0.7+ 1.0- 010121 360 0.8- 0.0 021105 360 0.1- 0.5- 001218 691 0.7+ 1.0- 010121 360 0.1+ 0.0 021105 360 0.1+ 0.1+ 001222 360 0.2+ 0.1+ 010220 360 0.8+ 0.7+ 021105 360 0.3- 0.9- 001222 360 0.3+ 0.3+ 010220 360 0.3- 0.7+ 001222 360 0.2- 0.1+ 010220 360 1.3+ 0.1+ ( ) -------- Rejected Obs.

Director, Computing Section Syuichi Nakano 2003 Dec. 6

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