OAA computing section circular NK 807 45P/Honda-Mrkos-Pajdusakova

The following improved orbital elements, by S. Nakano, are from 28 observations 1948-1964, including planetary perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas, Vesta, and non-gravitational effect of style II. The mean residual is +/- 1.29 arc seconds. Epoch = 1948 Nov. 25.0 TT T = 1948 Nov. 17.71721 +/- 0.00019 (m.e.) TT Peri. = 184.09906 +/- 0.00088 Node = 233.81769 +/- 0.00072 (2000.0) Inc. = 13.15637 +/- 0.00010 q = 0.5592695 +/- 0.0000035 AU e = 0.8141982 +/- 0.0000072 a = 3.0100323 +/- 0.0000391 AU n' = 0.18873278 +/- 0.00000368 P = 5.222 +/- 0.0001018 years A1 = +0.229 +/- 0.173 A2 = -0.04179 +/- 0.00006 T = 1954 Feb. 5.10530 TT Epoch = 1954 Jan. 18.0 TT Peri. = 184.11010 e = 0.8150895 Node = 233.80938 (2000.0) a = 3.0048893 AU Inc. = 13.19195 n'= 0.18921753 q = 0.5556357 AU P = 5.209 years [ T = 1959 Apr. 22.72226 TT Epoch = 1959 Apr. 22.0 TT Peri. = 184.11936 e = 0.8147492 Node = 233.82071 (2000.0) a = 3.0059687 AU Inc. = 13.17764 n'= 0.18911561 q = 0.5568582 AU P = 5.212 years ] T = 1964 July 6.56047 TT Epoch = 1964 July 24.0 TT Peri. = 184.10567 e = 0.8150144 Node = 233.84947 (2000.0) a = 3.0042451 AU Inc. = 13.19279 n'= 0.18927839 q = 0.5557422 AU P = 5.207 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1948/ 481210 056 2.0- 1.2- 540208 662 0.0 0.9- 481207 078 0.3+ 2.2- 481212 056 1.1+ 2.6+ 540214 711 2.7+ 2.0- 481207 056 0.4- 0.0 1949/ 540220 662 1.2- 0.8- 481207 754 0.4- 2.4+ 490107 078 0.4- 1.1+ 540220 662 0.5- 0.1- 481207 754 2.1+ 0.1- 490109 662 0.2+ 1.3+ 540222 711 1.8- 2.0- 481208 056 0.3+ 0.2- 490109 662 0.2- 0.2+ 540331 662 0.3- 0.5+ 481208 056 0.9+ 0.1+ 490110 078 1.1- 1.8- 540331 662 1.5- 1.1- 481208 008 1.5- 2.6+ 1954/ 1964/ 481209 056 1.1- 0.9+ 540205 711 1.5+ 0.2+ 640614 689 0.5+ 1.3+ 481209 754 1.0+ 1.4- 540208 711 1.0+ 1.7+ 640615 689 0.5- 1.1+ 481209 754 1.7+ 0.6+ 540208 662 0.0 1.8-

Director, Computing Section Syuichi Nakano 2001 Sept. 5

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