OAA computing section circular NK 786 34D/Gale
The following improved orbital elements, by S. Nakano, are from 35 observations 1927-1938, 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 +/- 2.40 arc seconds. There are two predictions with T= 2004 May 16 and June 6 on NK 549. Epoch = 1938 July 1.0 TT T = 1938 June 18.47571 +/- 0.00060 (m.e.) TT Peri. = 209.14930 +/- 0.00069 Node = 67.92363 +/- 0.00027 (2000.0) Inc. = 11.72718 +/- 0.00010 q = 1.1828998 +/- 0.0000036 AU e = 0.7607435 +/- 0.0000129 a = 4.9440645 +/- 0.0000539 AU n' = 0.08965569 +/- 0.00000146 P = 10.993 +/- 0.0001797 years A1 = +1.961 +/- 0.170 A2 = +0.75891 +/- 0.09256 (+/- 0.07 day) T = 1927 June 14.56025 TT Epoch = 1927 June 9.0 TT Peri. = 209.87442 e = 0.7586378 Node = 68.09029 (2000.0) a = 5.0282882 AU Inc. = 11.63436 n'= 0.08741256 q = 1.2136386 AU P = 11.275 years The predicted orbit for the 2004 return is as follows: T = 2004 June 3.72376 TT Epoch = 2004 June 4.0 TT Peri. = 217.91869 e = 0.7597323 Node = 57.82049 (2000.0) a = 5.0154439 AU Inc. = 10.61630 n'= 0.08774856 q = 1.2050493 AU P = 11.232 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1927/ 270622 051 4.5+ 3.8- 380603 754 0.6+ 1.1+ 270610 078 (5.1+ 6.9-) 270623 051 2.4+ 1.7- 380603 754 0.1+ 1.0+ 270610 078 4.2+ 2.7- 270624 078 4.6- 1.7- 380604 078 (2.4- 10.8-) 270611 078 4.0+ 1.9- 270624 078 1.1- 0.4- 380607 078 (1.8- 11.8-) 270612 078 (2.2- 6.0-) 270624 051 3.0+ 0.3- 380608 754 3.7+ 0.8+ 270614 078 (0.9- 7.2-) 270626 078 3.7+ 1.9+ 380608 754 2.1- 0.2+ 270614 078 (1.5+ 8.8-) 270708 078 1.8- 2.6+ 380609 078 (6.7- 2.0-) 270615 078 3.1- 3.5- 270720 078 1.2+ 1.0+ 380619 078 4.4- 0.3- 270615 078 (4.8- 7.5-) 270723 078 2.1+ 3.0+ 380621 078 1.0+ 2.1+ 270616 078 (4.4+ 6.2-) 270809 078 0.0 3.4+ 380625 078 (2.1+ 6.1-) 270616 078 (2.2+ 7.5-) 270819 078 3.8- 0.4- 380628 078(10.1+ 15.7-) 270617 078 4.0- 3.2- 270829 078 1.3- 1.6+ 380702 078 (8.9+ 14.0-) 270617 078 (8.7- 7.2-) 270902 078(40.9- 5.5+) 380705 078 0.9- 0.9+ 270620 078 4.5- 4.4+ 1938/ 380722 078 3.6+ 0.8- 270620 078 3.6- 0.8+ 380505 662 2.2+ 0.9+ 380723 078 1.6- 1.6- 270620 078 3.0+ 0.2- 380506 754 1.3- 1.6+ 380729 078 0.7+ 1.0- 270620 078 (3.5+ 7.7-) 380511 822 0.5+ 0.4+ 380729 078 (2.0- 10.2-) 270622 078 (8.1- 4.7+) 380602 754 2.0+ 0.1- 270622 078 0.2- 2.1- 380602 754 3.2- 0.4+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2001 Apr. 27