OAA computing section circular NK 801 P/1999 G1 (LINEAR)
The following improved orbital elements, by S. Nakano, are from 54 observations 1999 Mar. 23 to May 13. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.98 arc second. Epoch = 1998 Aug. 15.0 TT T = 1998 Aug. 1.74931 +/- 0.26874 (m.e.) TT Peri. = 136.14867 +/- 0.05264 Node = 23.46377 +/- 0.00459 (2000.0) Inc. = 76.56329 +/- 0.05325 q = 4.0490391 +/- 0.0024698 AU e = 0.8562625 +/- 0.0021476 a = 28.1696730 +/- 0.0149537 AU n' = 0.00659222 +/- 0.00000525 P = 149.511 +/- 0.1190501 years (+/-43.48 day) The predicted orbit for the 2148 return is as follows: T = 2148 Aug. 31.80189 TT Epoch = 2148 Aug. 28.0 TT Peri. = 136.14168 e = 0.8577014 Node = 23.46390 (2000.0) a = 28.5128375 AU Inc. = 76.51316 n'= 0.00647356 q = 4.0573372 AU P = 152.251 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1999/ 990410 118 0.1+ 1.4- 990411 108 1.3- 1.0- 990323 704 (3.0+ 0.9+) 990410 046 (2.0+ 1.0-) 990411 108 1.4+ 1.8- 990323 704 0.9- 0.5+ 990410 046 0.9- 1.6- 990411 159 0.2+ 0.2+ 990323 704 0.4+ 0.6+ 990410 046 (2.7+ 0.4-) 990411 159 0.7+ 1.3- 990323 704 0.3+ 0.3+ 990410 046 (2.5+ 1.5-) 990411 159 1.1+ 0.7- 990323 704 (4.5- 5.0+) 990410 046 1.9+ 1.2- 990411 159 0.7+ 0.0 990407 704 (1.0- 8.8+) 990410 046 (2.5+ 0.2-) 990411 159 (2.8+ 0.9-) 990407 704 (0.9- 4.5+) 990410 046 (2.6+ 0.1-) 990411 159 (3.9+ 0.9-) 990407 704 (0.6- 3.2+) 990410 557 0.2- 1.0+ 990411 159 (2.4+ 4.5-) 990407 704 (1.5- 3.4+) 990410 557 0.3- 0.1+ 990411 372 (1.2- 2.2+) 990408 402 (0.0 3.0+) 990410 704 (0.3- 3.4+) 990411 372 0.9- 0.4+ 990408 402 1.1- 0.8+ 990410 704 (1.0- 2.7+) 990414 897 1.8+ 0.5- 990408 402 0.8- 1.6- 990410 704 (0.6- 4.0+) 990414 360 0.4+ 1.1- 990408 402 1.2+ 0.3- 990410 704 (0.8- 4.1+) 990414 897 1.6+ 0.5+ 990409 118 0.9- 0.2+ 990410 704 0.1- 1.7+ 990414 360 0.8+ 0.2- 990409 118 1.6+ 0.8- 990410 704 0.3- 1.0+ 990414 360 0.5+ 0.1- 990409 118 0.1- 0.1- 990410 704 0.8- 1.2+ 990414 372 1.2- 1.2+ 990409 118 (2.8- 3.5+) 990410 704 1.0- 1.4+ 990416 704 (0.2+ 4.5+) 990409 118 0.2- 1.3+ 990410 704 0.2- 0.8- 990416 704 0.4+ 1.2+ 990409 704 1.6- 0.9- 990410 704 (2.4+ 0.4-) 990416 704 0.8+ 1.7+ 990409 704 0.2- 1.5+ 990410 704 (1.4+ 3.2+) 990416 704 (0.9- 5.4+) 990409 704 (0.4- 2.4+) 990410 704 (4.0+ 0.7-) 990416 704 (5.0- 0.3+) 990409 704 (0.6- 3.6+) 990410 704 (4.1- 1.2+) 990506 360 0.9- 0.4+ 990409 704 (1.5- 2.3+) 990410 426 1.2- 0.3- 990506 360 1.6- 0.7- 990409 704 1.1- 1.9+ 990410 426 0.7- 0.2- 990506 360 1.9- 0.4- 990409 704 0.2- 1.0+ 990410 426 0.4- 0.6- 990513 360 0.8+ 0.4- 990409 704 (1.0- 4.2+) 990410 587 1.9+ 1.3+ 990513 360 0.6+ 0.4+ 990409 704 (0.0 2.3+) 990410 587 0.6- 0.7- 990513 360 1.2+ 1.0+ 990410 118 0.1+ 0.5- 990411 108 1.1+ 1.4- 990410 118 0.2+ 0.9- 990411 108 0.2- 1.1- ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2001 July 2