OAA computing section circular NK 1685 206P/Barnard-Boattini (1892 T1 = 2008 T3)

The following improved orbital elements, by S. Nakano, are from 77 observations 1892 to 2008, including planetary perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas, Vesta, and non-gravitational effect of style II. The weighting mean residual is +/- 0.55 arc second. See a prediction in NK 858. Epoch = 2008 Oct. 21.0 TT T = 2008 Oct. 25.09058 +/- 0.00072 (m.e.) TT Peri. = 181.41848 +/- 0.00064 Node = 204.13498 +/- 0.00034 (2000.0) Inc. = 32.93730 +/- 0.00126 q = 1.1452813 +/- 0.0000101 AU e = 0.6466051 +/- 0.0000197 a = 3.2407975 +/- 0.0000564 AU n' = 0.16893756 +/- 0.00000441 P = 5.834 +/- 0.0001523 years A1 = +1.010 +/- 0.117 A2 = +0.06684 +/- 0.00716 (+/- 0.06 day) T = 1892 Dec. 11.25850 TT Epoch = 1892 Dec. 8.0 TT Peri. = 170.05180 e = 0.5886107 Node = 208.06584 (2000.0) a = 3.4796130 AU Inc. = 31.24638 n'= 0.15184751 q = 1.4314756 AU P = 6.491 years [ T = 1899 June 7.63757 TT Epoch = 1899 May 26.0 TT Peri. = 170.00362 e = 0.5879564 Node = 208.09021 (2000.0) a = 3.4812180 AU Inc. = 31.22245 n'= 0.15174250 q = 1.4344137 AU P = 6.495 years ] [ T = 1905 Dec. 2.79447 TT Epoch = 1905 Dec. 21.0 TT Peri. = 170.04462 e = 0.5892505 Node = 208.05846 (2000.0) a = 3.4739096 AU Inc. = 31.27715 n'= 0.15222161 q = 1.4269067 AU P = 6.475 years ] [ T = 1912 May 16.87757 TT Epoch = 1912 Apr. 28.0 TT Peri. = 170.22183 e = 0.5929482 Node = 208.01684 (2000.0) a = 3.4566189 AU Inc. = 31.38763 n'= 0.15336520 q = 1.4070229 AU P = 6.427 years ] [ T = 1918 Oct. 20.43784 TT Epoch = 1918 Oct. 14.0 TT Peri. = 170.31519 e = 0.5934930 Node = 207.95811 (2000.0) a = 3.4524752 AU Inc. = 31.41874 n'= 0.15364139 q = 1.4034555 AU P = 6.415 years ] [ T = 1925 Feb. 28.69482 TT Epoch = 1925 Feb. 19.0 TT Peri. = 175.03529 e = 0.6455173 Node = 206.80442 (2000.0) a = 3.2735580 AU Inc. = 31.86559 n'= 0.16640793 q = 1.1604196 AU P = 5.923 years ] [ T = 1931 Feb. 2.98929 TT Epoch = 1931 Jan. 19.0 TT Peri. = 175.12584 e = 0.6455647 Node = 206.74863 (2000.0) a = 3.2724401 AU Inc. = 31.87617 n'= 0.16649320 q = 1.1598684 AU P = 5.920 years ] [ T = 1936 Dec. 22.40252 TT Epoch = 1936 Dec. 18.0 TT Peri. = 178.62951 e = 0.6898410 Node = 205.62393 (2000.0) a = 3.1413323 AU Inc. = 31.80356 n'= 0.17702445 q = 0.9743125 AU P = 5.568 years ] [ T = 1942 July 19.16780 TT Epoch = 1942 July 20.0 TT Peri. = 178.71276 e = 0.6902247 Node = 205.57807 (2000.0) a = 3.1393606 AU Inc. = 31.82878 n'= 0.17719125 q = 0.9724964 AU P = 5.562 years ] [ T = 1948 Feb. 2.67431 TT Epoch = 1948 Feb. 19.0 TT Peri. = 179.06092 e = 0.6966309 Node = 205.47631 (2000.0) a = 3.1163853 AU Inc. = 32.00454 n'= 0.17915435 q = 0.9454149 AU P = 5.501 years ] [ T = 1953 Aug. 3.32570 TT Epoch = 1953 Aug. 11.0 TT Peri. = 179.12135 e = 0.6976551 Node = 205.44313 (2000.0) a = 3.1118999 AU Inc. = 32.06802 n'= 0.17954183 q = 0.9408670 AU P = 5.490 years ] [ T = 1959 Jan. 26.36279 TT Epoch = 1959 Feb. 1.0 TT Peri. = 179.12103 e = 0.6985527 Node = 205.45375 (2000.0) a = 3.1077443 AU Inc. = 32.09597 n'= 0.17990207 q = 0.9368212 AU P = 5.479 years ] [ T = 1964 July 17.00894 TT Epoch = 1964 July 24.0 TT Peri. = 179.12216 e = 0.6995303 Node = 205.44956 (2000.0) a = 3.1031031 AU Inc. = 32.15357 n'= 0.18030582 q = 0.9323886 AU P = 5.466 years ] [ T = 1970 Jan. 3.54473 TT Epoch = 1970 Jan. 14.0 TT Peri. = 179.09424 e = 0.6991167 Node = 205.46530 (2000.0) a = 3.1051468 AU Inc. = 32.12524 n'= 0.18012785 q = 0.9342867 AU P = 5.472 years ] [ T = 1975 June 23.13520 TT Epoch = 1975 July 7.0 TT Peri. = 179.06496 e = 0.6994796 Node = 205.48084 (2000.0) a = 3.1032902 AU Inc. = 32.15347 n'= 0.18028952 q = 0.9326020 AU P = 5.467 years ] [ T = 1980 Dec. 12.12353 TT Epoch = 1980 Dec. 27.0 TT Peri. = 179.06812 e = 0.6986557 Node = 205.47610 (2000.0) a = 3.1077960 AU Inc. = 32.10718 n'= 0.17989758 q = 0.9365168 AU P = 5.479 years ] [ T = 1986 June 7.26720 TT Epoch = 1986 June 19.0 TT Peri. = 179.09693 e = 0.6972330 Node = 205.47805 (2000.0) a = 3.1129491 AU Inc. = 32.07064 n'= 0.17945107 q = 0.9424982 AU P = 5.492 years ] [ T = 1991 Dec. 7.93109 TT Epoch = 1991 Dec. 10.0 TT Peri. = 179.14297 e = 0.6964244 Node = 205.45007 (2000.0) a = 3.1175491 AU Inc. = 32.02681 n'= 0.17905404 q = 0.9464117 AU P = 5.505 years ] [ T = 1997 June 24.58819 TT Epoch = 1997 July 11.0 TT Peri. = 179.51013 e = 0.6892465 Node = 205.28720 (2000.0) a = 3.1416101 AU Inc. = 31.93957 n'= 0.17700097 q = 0.9762662 AU P = 5.568 years ] [ T = 2003 Jan. 22.11906 TT Epoch = 2003 Feb. 10.0 TT Peri. = 179.59274 e = 0.6887710 Node = 205.24274 (2000.0) a = 3.1440855 AU Inc. = 31.91804 n'= 0.17679198 q = 0.9785307 AU P = 5.575 years ] The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1892/ 081007 854 0.5- 1.4+ 081008 673 0.4- 0.7+ 921017 020 4.5- 1.4+ 081007 118 0.1- 0.1- 081008 673 0.1- 0.3+ 921018 020 0.6- 0.2+ 081007 118 0.7- 0.4+ 081008 673 0.5- 1.1+ 921019 020 1.1- 1.3+ 081007 118 0.0 0.3+ 081008 H01 0.2+ 0.3+ 921021 020 0.4- 1.2+ 081007 118 0.2+ 0.1+ 081008 H01 0.1+ 0.3+ 921022 020 3.0+ 1.2+ 081007 J95 0.4- 0.3+ 081008 H01 0.0 0.6+ 921024 020 1.6+ 2.8- 081007 J95 0.1+ 0.0 081008 H01 0.0 0.4+ 921026 020 0.1- 0.2- 081007 J95 0.4- 0.0 081008 H01 0.2+ 0.3+ 921027 020 1.6+ 2.6- 081007 J95 0.2- 0.1- 081008 H01 0.3+ 0.2+ 921208 020 0.5+ 2.6+ 081007 A35 0.2- 0.3- 081008 H01 0.0 0.3+ 2008/ 081007 A35 0.1+ 0.1- 081008 H01 0.4+ 0.4+ 081007 703 1.0+ 1.0- 081007 A35 0.5- 0.2+ 081008 H01 0.2+ 0.1+ 081007 703 0.1+ 1.2+ 081007 A35 0.1- 0.1+ 081008 H01 0.0 0.4+ 081007 703 1.6- 0.8+ 081008 J95 0.1+ 0.1- 081008 448 0.1+ 0.2+ 081007 703 0.5+ 1.7+ 081008 J95 0.0 0.1- 081008 448 0.3+ 0.2- 081007 703 1.0- 0.3- 081008 J95 0.1- 0.2- 081008 448 0.0 0.0 081007 703 0.3- 0.5- 081008 682 0.5+ 0.7- 081008 448 0.0 0.3- 081007 703 0.1- 0.5+ 081008 682 0.5+ 1.0- 081008 448 0.1+ 0.1- 081007 703 0.1- 1.1+ 081008 682 0.7+ 1.0- 081008 G96 0.4+ 0.1- 081007 703 0.3- 0.7- 081008 G96 0.1- 0.0 081008 G96 0.4+ 0.2- 081007 703 0.1- 0.5- 081008 G96 0.2- 0.9- 081008 G96 0.3+ 0.6- 081007 703 0.2- 0.3- 081008 G96 0.2+ 0.6- 081008 G96 0.1+ 0.7- 081007 703 0.1- 1.3- 081008 G96 0.3+ 0.8- 081008 H06 0.6- 0.4+ 081007 703 0.4- 0.5- 081008 G96 0.2+ 0.5- 081008 H06 0.2- 0.3+ 081007 703 0.8+ 0.9- 081008 G96 0.3- 0.3- 081008 H06 0.4- 0.5+ 081007 703 1.9+ 1.0- 081008 G96 0.4- 0.1- 081008 H06 1.1+ 0.8+ 081007 854 (0.8+ 2.8+) 081008 673 0.4- 0.6+ 081009 900 (0.8+ 0.5-)* 081009 900 (2.2+ 0.6-)* 081015 349(11.0+ 11.0-)* 081015 349(11.1+ 11.2-)* 081015 349(10.8+ 11.4-)* (*) -------- Not include in improvement ( ) -------- Rejected Obs.

Director, Computing Section Syuichi Nakano 2008 Oct. 9

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