OAA computing section circular NK 1513 C/2001 O2 (NEAT)

The following improved orbital elements, by S. Nakano, are from 54 observations 2001 July 25 to Sept. 20. The mean residual is +/- 0.64 arc second. See an orbit on HICQ 2002. T = 1999 Oct. 18.03875 +/- 0.03621 (m.e.) TT Peri. = 281.13684 +/- 0.03417 Node = 328.69039 +/- 0.00303 (2000.0) Inc. = 91.05599 +/- 0.01543 q = 4.8353616 +/- 0.0024757 AU e = 1.0 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2001/ 010801 649 1.0+ 0.1- 010823 402 0.1- 1.5- 010725 608 0.5- 1.3- 010802 608 0.6- 0.7- 010825 699 0.2+ 0.4- 010725 608 0.1+ 0.1+ 010802 608 0.2- 0.7- 010825 699 0.9+ 0.7+ 010725 608 0.6+ 0.2- 010802 608 0.3- 0.4- 010825 699 0.4+ 0.3+ 010729 644 1.2- 1.1+ 010814 402 0.9+ 0.3+ 010825 699 1.3+ 0.0 010729 644 0.4- 1.0+ 010814 402 1.7+ 1.0+ 010827 360 0.2- 0.3- 010729 644 0.3- 1.0+ 010814 402 0.1+ 0.3- 010827 360 0.5- 1.0- 010730 428 (1.1- 2.5+) 010814 372 0.2- 0.8+ 010827 360 0.5- 0.4- 010731 046 0.8- 0.2- 010815 829 0.5- 0.6- 010911 704 0.4- 0.2- 010731 046 0.1+ 0.7- 010815 829 0.6- 0.7- 010911 704 0.5+ 0.4- 010731 046 0.3+ 0.2- 010815 372 0.7+ 0.0 010911 704 0.7- 0.8+ 010731 046 (2.5- 1.2+) 010816 644 0.1- 0.4+ 010911 704 0.2+ 0.5- 010731 557 0.5+ 0.9+ 010816 644 0.1+ 0.2+ 010911 704 0.0 0.5+ 010731 557 (2.4- 0.3+) 010816 644 0.1+ 0.3+ 010916 360 0.2- 0.3+ 010731 620 (0.4- 3.4+) 010819 704 1.2+ 1.6- 010916 360 0.1+ 0.1+ 010731 620 (2.7+ 1.2+) 010819 704 0.9- 0.5+ 010916 360 0.6+ 0.5+ 010731 428 0.0 0.7+ 010819 704 0.6- 0.2- 010920 402 0.1+ 0.5+ 010731 422 0.2- 0.5+ 010819 704 0.3+ 1.2- 010920 402 0.0 0.8+ 010731 422 0.4+ 0.5+ 010819 704 0.8- 1.5+ 010920 402 0.5- 0.7- 010731 422 (0.9+ 2.2+) 010823 402 0.2- 0.1+ 010801 649 0.4+ 0.4- 010823 402 1.1- 0.3- ( ) -------- Rejected Obs.

Director, Computing Section Syuichi Nakano 2007 July 14

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