OAA computing section circular NK 1152 P/1994 N2 (McNaught-Hartley)

The following improved orbital elements, by S. Nakano, are from 77 observations 1994 July 5 to 1996 Jan. 21. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.73 arc second. Epoch = 1994 Nov. 24.0 TT T = 1994 Dec. 8.17227 +/- 0.00139 (m.e.) TT Peri. = 312.19008 +/- 0.00054 Node = 36.01158 +/- 0.00022 (2000.0) Inc. = 17.64830 +/- 0.00005 q = 2.4846035 +/- 0.0000054 AU e = 0.6713159 +/- 0.0000158 a = 7.5592440 +/- 0.0000480 AU n' = 0.04742273 +/- 0.00000045 P = 20.783 +/- 0.0001979 years (+/- 0.07 day) The predicted orbit for the 2015 return is as follows: T = 2015 Oct. 24.80030 TT Epoch = 2015 Oct. 25.0 TT Peri. = 313.23381 e = 0.6743289 Node = 35.72176 (2000.0) a = 7.5165296 AU Inc. = 17.87170 n'= 0.04782754 q = 2.4479163 AU P = 20.608 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1994/ 940815 413 0.1+ 0.1- 941123 360 1.3+ 0.1- 940705 413 0.5+ 1.9+ 940815 413 0.8- 0.1- 941123 360 1.8+ 0.6+ 940706 413 0.4+ 0.9+ 940815 413 0.4+ 0.0 941127 897 (2.9+ 0.8+) 940706 413 0.2+ 1.4+ 940816 413 0.6+ 0.0 941127 897 0.1- 0.3+ 940707 413 0.4+ 0.3+ 940816 413 0.4+ 0.3+ 941127 897 0.1- 0.9+ 940707 413 0.2+ 1.9+ 940817 413 0.6+ 0.5+ 941206 897 (2.6+ 0.1+) 940708 675 (1.8- 4.2-) 940817 413 0.7+ 0.4+ 941219 413 0.8- 0.3+ 940708 675 (1.9+ 2.0-) 940817 413 1.4+ 0.3+ 941219 413 0.5- 0.2+ 940708 413 0.1- 1.5- 940826 413 0.5- 0.1- 941220 413 0.6- 0.1+ 940708 413 1.3+ 1.7+ 940826 413 0.1- 0.2- 941220 413 0.7- 0.2+ 940710 372 1.7- 1.8- 940827 413 0.2- 0.2- 941222 360 0.1+ 0.1+ 940710 372 (1.2- 2.5-) 940827 413 0.3- 0.2- 941222 360 0.2- 0.2+ 940711 323 1.0- 1.2- 940828 413 0.3- 0.0 1995/ 940712 360 0.1- 0.2+ 940828 413 0.1- 0.0 950112 413 0.9+ 0.6+ 940712 360 0.0 0.0 940917 413 0.6- 0.5+ 950112 413 0.0 0.2+ 940715 360 0.1- 0.2+ 940917 413 0.7- 1.1+ 950113 413 0.5- 0.1+ 940715 360 0.4- 0.1- 940925 360 0.9- 0.2- 950113 413 1.1+ 0.2+ 940716 372 0.5+ 1.4- 940925 360 0.7- 0.1+ 950114 413 0.8- 0.3+ 940720 413 0.9- 0.3+ 941002 360 0.3- 0.1+ 950114 413 0.0 0.3+ 940725 413 0.5- 0.1- 941002 360 0.2- 0.3- 950201 413 0.6+ 1.0- 940725 413 0.6- 0.1- 941024 360 0.4+ 0.6- 950201 413 1.0+ 0.7- 940726 413 0.5- 0.2+ 941024 360 1.1+ 0.5- 950202 413 0.0 1.3- 940728 897 1.6+ 1.3+ 941025 360 0.6- 0.6- 950202 413 0.4+ 0.6- 940728 897 (0.2- 2.7-) 941025 360 0.4- 0.8- 951222 693 0.4+ 0.5+ 940728 897 1.4+ 1.6- 941106 360 1.2+ 0.9- 951222 693 0.1+ 0.6+ 940729 413 1.3- 0.3- 941106 360 1.2+ 0.8- 951222 693 0.3+ 0.4+ 940810 413 0.8- 0.6- 941111 413 0.2- 0.0 1996/ 940810 474 (1.8- 2.1-) 941111 413 0.2- 0.0 960121 691 1.4- 0.3+ 940810 413 0.3- 0.3+ 941111 413 0.5- 0.1- 960121 691 0.9- 0.5+ ( ) -------- Rejected Obs.

Director, Computing Section Syuichi Nakano 2005 Jan. 19

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