OAA computing section circular NK 663 5D/Brorsen
The following improved orbital elements, by S. Nakano, are from 120 observations 1868-1879, 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 +/- 2.69 arc seconds. Epoch = 1884 Sept.21.0 TT T = 1884 Sept.13.25274 +/- 0.00017 (m.e.) TT Peri. = 14.93509 +/- 0.00076 Node = 102.97824 +/- 0.00050 (2000.0) Inc. = 29.43950 +/- 0.00030 q = 0.5861152 +/- 0.0000029 AU e = 0.8107147 +/- 0.0000006 a = 3.0964644 +/- 0.0000058 AU n' = 0.18088600 +/- 0.00000051 P = 5.449 +/- 0.0000155 years A1 = +1.323 +/- 0.104 A2 = +0.13425 +/- 0.00016 T = 1868 Apr. 17.92039 TT Epoch = 1868 Apr. 18.0 TT Peri. = 14.83231 e = 0.8079117 Node = 103.02069 (2000.0) a = 3.1078296 AU Inc. = 29.36742 n'= 0.17989466 q = 0.5969777 AU P = 5.479 years T = 1873 Oct. 10.98033 TT Epoch = 1873 Oct. 9.0 TT Peri. = 14.86375 e = 0.8088041 Node = 102.99638 (2000.0) a = 3.1055120 AU Inc. = 29.40353 n'= 0.18009608 q = 0.5937610 AU P = 5.473 years T = 1879 Mar. 31.03404 TT Epoch = 1879 Apr. 1.0 TT Peri. = 14.94661 e = 0.8097945 Node = 102.96767 (2000.0) a = 3.1010835 AU Inc. = 29.38176 n'= 0.18048200 q = 0.5898430 AU P = 5.461 years The predicted orbit for the 2000 return is as follows: T = 2000 Oct. 9.09377 TT Epoch = 2000 Oct. 23.0 TT Peri. = 19.48993 e = 0.8171575 Node = 98.49451 (2000.0) a = 3.2006222 AU Inc. = 22.47985 n'= 0.17212837 q = 0.5852096 AU P = 5.726 years The following residuals in seconds of arc are from the above orbital elements: 18/ 18/ 18/ 680414 066 (7.0+ 1.9+) 680518 512 1.5- 1.4+ 790408 539 2.5- 1.3- 680414 548 3.4+ 1.9+ 680519 512 1.7- 1.6+ 790409 787 1.1- 0.3- 680415 066 (2.2+ 7.5+) 680520 516 4.6- 1.4- 790409 058 3.8- 3.2- 680415 066 (6.8+ 7.3+) 680520 035 0.8- 2.4- 790411 084 1.7- 1.5- 680417 066 (3.6+ 7.3+) 680521 035 3.2- 3.3- 790411 004 1.9- 2.0- 680417 066 6.4+ 1.4+ 680521 035 2.1- 4.9- 790412 787 2.6- 2.9- 680418 066 3.2+ 0.4+ 680523 548 (8.1- 4.4-) 790413 084 1.2- 0.6- 680418 066 4.8+ 3.7+ 680523 982 4.7- 0.8- 790418 084 0.2- 0.4- 680418 066 3.3+ 5.9+ 680524 982 4.9- 1.8+ 790418 512 0.1+ 2.1+ 680418 512 3.0+ 3.8+ 680528 548 (7.5- 1.3+) 790419 512 3.3- 3.4+ 680423 512 5.6+ 0.5+ 680606 066 (8.4- 1.2+) 790420 058 4.9- 2.6+ 680425 066 5.2+ 5.7+ 680609 066 4.9- 4.4+ 790422 787 0.3+ 2.6+ 680425 512 5.9+ 2.4+ 730921 500 0.2- 3.7+ 790423 534 2.1- 0.6- 680426 066 5.7+ 0.6- 730925 539 0.5+ 5.8+ 790425 512 3.5- 2.0+ 680426 512 4.5+ 1.8+ 730929 539 2.5- 5.5+ 790425 534 1.1- 3.8+ 680427 066 5.2+ 1.7+ 731001 539 3.6- 3.3+ 790425 526 1.4- 1.9- 680427 548 5.1+ 0.0 731003 027 2.6- 1.4+ 790427 534 0.7- 0.5+ 680429 066 2.4+ 0.7- 731004 027 2.4- 3.3+ 790428 035 2.2+ 0.9+ 680429 548 2.4+ 4.1+ 731004 787 1.4+ 2.3+ 790429 084 2.6- 0.2+ 680430 516 0.8- 0.1- 731023 539 3.5- 1.5+ 790430 084 1.4- 0.0 680502 066 0.3+ 3.4+ 790319 534 0.3+ 3.8- 790430 534 0.9+ 2.1+ 680502 066 1.2- 1.1- 790319 548 0.5- 0.1- 790430 004 0.8+ 2.1+ 680502 534 2.3+ 1.7- 790321 058 1.2+ 3.0- 790501 534 0.7+ 1.3+ 680502 512 2.2+ 3.1+ 790323 058 1.2- 0.3- 790502 035 3.3+ 3.0+ 680503 066 3.8+ 0.6+ 790324 084 2.1- 2.0- 790503 526 0.1- 0.7+ 680503 516 0.4+ 1.4+ 790324 534 1.2- 1.5- 790503 512 3.3- 4.0+ 680504 548 4.2+ 0.8+ 790324 035 2.0- 3.3- 790503 004 0.7- 3.3- 680506 512 1.1+ 1.4+ 790325 534 0.6- 3.3- 790503 035 3.0+ 0.6- 680508 534 1.9- 2.4+ 790325 534 0.6+ 4.3- 790504 084 3.0+ 1.9- 680509 516 3.3- 1.9+ 790325 035 0.4- 2.9- 790504 534 0.9- 1.4+ 680511 035 3.5- 3.0- 790327 084 3.4- 4.5- 790507 035 2.4+ 0.5+ 680512 066 1.3- 0.1- 790327 058 1.7- 2.0- 790508 035 2.1+ 3.7+ 680512 066 2.3+ 1.7+ 790328 084 0.7- 0.8- 790509 797 2.0- 0.6+ 680512 512 0.8+ 1.8- 790329 004 0.4+ 5.5- 790509 084 0.5- 1.9- 680513 548 1.1+ 0.8- 790402 534 0.4+ 2.3- 790510 004 3.5+ 3.1- 680513 035 3.8- 0.1- 790403 058 0.2- 2.8- 790511 534 1.3+ 3.2- 680515 534 4.8- 0.5- 790404 084 0.1+ 1.7- 790512 004 2.4+ 2.9- 680515 534 5.3- 1.1+ 790405 084 2.0- 2.5- 790512 004 3.8+ 3.0- 680516 534 2.5- 4.4- 790405 534 0.1- 1.7- 790514 058 2.4+ 2.3+ 680516 982 4.5- 2.0- 790406 084 0.7- 0.5- 790514 035 5.0+ 0.1- 680516 982 2.1- 0.8+ 790407 534 3.0- 0.6- 790516 534 4.3+ 1.2- 680517 035 1.2- 1.7- 790407 058 0.7+ 1.9- 680518 035 3.1- 4.7- 790408 084 1.8- 1.9- ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1997 May 5