OAA computing section circular NK 1532 P/McNaught (2007 N1 = KTGGUQ = 28L108 = LZWRM4)
Three survey objects (KTGGUQ = 28L108 = LZWRM4) discovered in 2000 have been identified using an orbit determined from 74 observations 2007 July 10 to Aug. 24. The following linked orbital elements, by S. Nakano, are from 84 observations 2000 to 2007, including these three objects. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.64 arc second. See an orbit on YC 2562. Epoch = 2007 Sept.17.0 TT T = 2007 Sept.13.08728 +/- 0.00207 (m.e.) TT Peri. = 274.16168 +/- 0.00097 Node = 106.52893 +/- 0.00041 (2000.0) Inc. = 8.76118 +/- 0.00003 q = 2.0479343 +/- 0.0000038 AU e = 0.4200684 +/- 0.0000012 a = 3.5313379 +/- 0.0000028 AU n' = 0.14852350 +/- 0.00000017 P = 6.636 +/- 0.0000078 years T = 2001 Jan. 12.75952 TT Epoch = 2001 Jan. 11.0 TT Peri. = 274.01853 e = 0.4123475 Node = 106.95736 (2000.0) a = 3.5562242 AU Inc. = 8.73747 n'= 0.14696719 q = 2.0898239 AU P = 6.706 years The predicted orbit for the 2014 return is as follows: T = 2014 May 6.19780 TT Epoch = 2014 May 23.0 TT Peri. = 274.47036 e = 0.4206566 Node = 106.40900 (2000.0) a = 3.5284706 AU Inc. = 8.76326 n'= 0.14870457 q = 2.0441962 AU P = 6.628 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2000/ 070712 A55 0.1- 0.2- 070728 213 1.2- 0.4+ 000805 608 0.4+ 0.3+ 070712 A55 0.4- 0.2+ 070803 423 0.3+ 0.4- 000805 608 0.1+ 0.3- 070715 372 0.0 0.5+ 070803 423 0.6- 0.4+ 000805 608 0.4+ 0.4- 070716 204 0.4+ 0.1- 070806 585 0.0 0.2- 000821 699 1.4- 0.4- 070716 204 0.1+ 0.3- 070806 585 0.1+ 0.4- 000821 699 1.1+ 0.8+ 070716 673 1.1+ 0.0 070806 585 0.8- 1.0- 000821 699 1.5- 1.0+ 070716 673 0.9+ 0.1+ 070806 585 1.0- 1.1+ 000821 699 0.0 0.5+ 070716 673 1.0+ 0.4+ 070808 850 1.0- 0.2+ 001130 608 0.2+ 1.2+ 070716 673 1.2+ 0.4+ 070808 850 0.8+ 1.4- 001130 608 0.3- 1.2+ 070717 673 0.4+ 0.4+ 070810 850 (5.7+ 2.3+) 001130 608 0.3- 1.3+ 070717 673 0.6+ 0.2+ 070810 850 (5.3+ 2.6+) 2007/ 070717 673 0.4+ 0.7+ 070810 423 0.9- 0.2- 070710 E12 0.4- 0.9- 070717 673 0.7+ 0.6+ 070810 423 1.5- 0.0 070710 E12 1.0- 0.4- 070718 673 0.9+ 0.4+ 070810 349 0.2+ 1.0- 070710 E12 0.5- 0.4+ 070718 673 0.3+ 0.5+ 070810 349 0.4+ 0.9- 070710 E12 0.8+ 0.5- 070718 673 0.6+ 0.5+ 070811 204 0.0 0.2- 070710 E12 0.3+ 0.5- 070718 673 0.7+ 0.1+ 070811 423 0.5+ 0.2+ 070710 E12 0.6+ 0.4- 070719 673 0.8+ 0.2- 070811 423 0.0 0.1+ 070711 703 (2.5- 0.4-) 070719 673 0.6+ 0.8- 070812 215 1.7- 0.4- 070711 703 0.4- 0.9- 070719 673 0.1+ 0.1+ 070822 585 1.8- 0.4+ 070711 703 1.0- 0.6- 070719 673 (2.6+ 0.7+) 070822 585 0.2+ 0.5+ 070711 703 1.0- 1.6- 070720 A79 (1.9- 3.5-) 070822 585 0.0 0.6+ 070711 474 0.1+ 0.2- 070720 A79 (1.8- 2.9-) 070822 585 0.8+ 0.6+ 070711 474 0.7- 0.3- 070720 A79 (0.8- 2.7-) 070822 704 0.2+ 0.1- 070711 E12 0.1+ 0.2- 070722 850 0.1+ 0.8- 070822 704 0.5+ 0.5+ 070711 474 0.1+ 0.4- 070722 850 0.3- 1.0- 070822 704 0.4+ 0.5+ 070711 474 0.1+ 0.1- 070722 850 0.2- 0.4- 070822 704 0.2+ 0.1+ 070711 E12 0.2+ 0.6- 070723 349 0.0 0.2- 070822 704 0.3+ 0.3+ 070711 E12 0.8+ 0.6- 070723 349 0.1- 0.4- 070824 213 0.7+ 0.4+ 070712 A55 0.5- 0.3- 070728 213 1.1- 0.3+ 070824 213 0.7+ 0.3+ 070712 A55 0.3+ 0.3- 070728 213 1.1- 0.3+ 070824 213 0.8+ 0.2+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2007 Sept. 2