OAA computing section circular NK 851B 3D/Biela-B

The following improved orbital elements, by S. Nakano, are from 26 observations 1832 to 1852, 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 +/- 2.09 arc seconds. Epoch = 1852 Sept.29.0 TT T = 1852 Sept.24.22541 +/- 0.00073 (m.e.) TT Peri. = 223.19700 +/- 0.00162 Node = 248.00525 +/- 0.00077 (2000.0) Inc. = 12.54991 +/- 0.00027 q = 0.8606182 +/- 0.0000018 AU e = 0.7558741 +/- 0.0000048 a = 3.5253040 +/- 0.0000199 AU n' = 0.14890497 +/- 0.00000126 P = 6.619 +/- 0.0000560 years A1 = +1.043 +/- 0.133 A2 = +0.03315 +/- 0.00013 T = 1832 Nov. 26.61540 TT Epoch = 1832 Dec. 3.0 TT Peri. = 221.66058 e = 0.7512836 Node = 250.66464 (2000.0) a = 3.5343827 AU Inc. = 13.21710 n'= 0.14833161 q = 0.8790588 AU P = 6.645 years [ T = 1839 July 23.02809 TT Epoch = 1839 Aug. 9.0 TT Peri. = 221.76850 e = 0.7514294 Node = 250.55090 (2000.0) a = 3.5336121 AU Inc. = 13.20701 n'= 0.14838014 q = 0.8783521 AU P = 6.642 years ] T = 1846 Feb. 11.58041 TT Epoch = 1846 Jan. 24.0 TT Peri. = 223.06334 e = 0.7566157 Node = 248.13916 (2000.0) a = 3.5189433 AU Inc. = 12.57657 n'= 0.14930889 q = 0.8564556 AU P = 6.601 years The predicted orbit for the 2006 return is as follows: T = 2006 Jan. 23.42672 TT Epoch = 2006 Jan. 25.0 TT Peri. = 258.59605 e = 0.7640159 Node = 210.40211 (2000.0) a = 3.5696904 AU Inc. = 8.34619 n'= 0.14613635 q = 0.8423901 AU P = 6.744 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1832/ 460115 058 1.8- 2.4- 460311 058 0.9- 0.5+ 321021 075 1.8+ 0.4+ 460120 000 1.1- 2.3- 460315 786 2.3- 1.2+ 321027 075 3.6+ 0.2+ 460125 786 0.4- 2.4- 460319 500 5.0- 2.2+ 321103 075 0.6+ 1.8+ 460127 058 0.0 2.4- 1852/ 321107 075 1.0- 6.3+ 460203 500 0.9+ 2.5- 520902 034 0.5+ 0.2- 321121 058 0.8- 3.5+ 460211 500 1.7+ 2.5- 520920 034 0.0 0.5- 321128 075 3.0+ 3.5+ 460220 500 2.3+ 2.1- 520921 084 0.1- 0.5- 1833/ 460221 007 2.2+ 2.1- 520922 503 0.3- 0.4- 330103 051 1.5+ 4.5+ 460301 007 1.7+ 1.4- 520924 084 0.6- 0.4- 1846/ 460303 500 1.5+ 1.0- 520926 084 0.7- 0.3- ( ) -------- Rejected Obs.

Director, Computing Section Syuichi Nakano 2002 May 8

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