OAA computing section circular NK 1255 P/2005 E1 (Tubbiolo)
The following improved orbital elements, by S. Nakano, are from 60 observations 2005 Mar. 3 to May 9. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.77 arc second. See orbits on YC 2463, YC 2464 and YC 2465. Epoch = 2005 Mar. 11.0 TT T = 2005 Mar. 16.69274 +/- 1.27294 (m.e.) TT Peri. = 170.60391 +/- 0.15456 Node = 4.41212 +/- 0.00319 (2000.0) Inc. = 5.15553 +/- 0.00188 q = 4.4460500 +/- 0.0006136 AU e = 0.3841838 +/- 0.0002172 a = 7.2197674 +/- 0.0003777 AU n' = 0.05080650 +/- 0.00000402 P = 19.399 +/- 0.0015197 years (+/- 0.56 day) The predicted orbit for the 2023 return is as follows: T = 2023 Oct. 1.35250 TT Epoch = 2023 Sept.13.0 TT Peri. = 193.91803 e = 0.3761889 Node = 335.46834 (2000.0) a = 7.0597856 AU Inc. = 4.25961 n'= 0.05254323 q = 4.4039725 AU P = 18.758 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2005/ 050314 372 1.0- 0.3+ 050402 A13 0.2+ 0.5+ 050303 691 0.0 0.5- 050314 372 1.4- 0.5- 050402 A13 0.4+ 0.5- 050303 691 0.0 1.0- 050318 372 0.6- 1.6+ 050402 A13 0.6+ 0.0 050303 691 0.5+ 0.4- 050318 213 0.7- 1.6+ 050402 215 0.2- 0.3- 050304 H36 0.7- 0.7- 050318 213 0.8- 1.6+ 050404 G96 1.6- 0.5+ 050304 H36 1.4- 0.8+ 050318 213 0.8- 1.4+ 050404 G96 0.3- 0.2- 050304 F65 0.1+ 0.9- 050318 213 0.7- 1.2+ 050404 G96 0.2+ 0.5- 050304 F65 0.5+ 1.0- 050318 J76 0.8+ 0.0 050404 G96 0.1- 0.3+ 050304 F65 0.5+ 1.0- 050318 J76 0.5+ 0.7+ 050404 D74 0.3+ 0.5- 050304 F65 0.2+ 0.6- 050318 J76 0.9+ 1.0+ 050404 D74 0.1+ 0.3- 050304 691 0.5+ 0.5- 050331 360 0.5+ 0.2- 050404 D74 0.8+ 0.0 050304 691 0.1+ 0.4- 050331 360 0.8+ 0.4- 050404 D74 0.5+ 0.1- 050304 691 1.2+ 0.7- 050331 360 0.6+ 0.4- 050405 372 0.3+ 0.1+ 050304 246 0.1- 0.3+ 050401 A13 0.5+ 0.5- 050427 213 1.4- 0.2- 050304 246 (2.2- 0.3+) 050401 213 0.1+ 0.9+ 050427 213 1.1- 0.1- 050304 246 0.4- 0.2- 050401 213 0.5+ 1.2+ 050427 213 0.7- 0.0 050307 850 0.1+ 1.7- 050401 A13 0.0 0.4- 050509 673 0.4+ 0.4- 050307 850 1.6+ 1.9- 050401 213 0.4+ 1.2+ 050509 673 0.2+ 0.4- 050309 213 1.0- 1.3+ 050401 A13 0.3+ 0.3- 050509 673 0.1+ 0.5- 050309 213 1.2- 1.6+ 050401 A13 0.1+ 0.4- 050509 673 0.1- 0.5- 050313 372 0.6- 1.4+ 050402 A13 1.7+ 0.7- ( ) -------- Rejected Obs.
Director, Computing Section Late edition Syuichi Nakano 2005 Aug. 29