OAA computing section circular NK 1226 P/2004 EW38 (Catalina-LINEAR)
The following improved orbital elements, by S. Nakano, are from 72 observations 2003 Dec. 28 to 2004 May 19. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.69 arc second. See an orbit on YC 2425. Epoch = 2003 Nov. 17.0 TT T = 2003 Nov. 19.89677 +/- 0.00094 (m.e.) TT Peri. = 90.23489 +/- 0.00136 Node = 49.90186 +/- 0.00036 (2000.0) Inc. = 6.52325 +/- 0.00008 q = 1.7933505 +/- 0.0000192 AU e = 0.5002664 +/- 0.0000231 a = 3.5886129 +/- 0.0000475 AU n' = 0.14498202 +/- 0.00000288 P = 6.798 +/- 0.0001350 years (+/- 0.05 day) The predicted orbit for the 2010 return is as follows: T = 2010 Sept. 3.60709 TT Epoch = 2010 Sept. 1.0 TT Peri. = 90.13525 e = 0.5000024 Node = 49.88371 (2000.0) a = 3.5896441 AU Inc. = 6.52481 n'= 0.14491955 q = 1.7948134 AU P = 6.801 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2003/ 040325 699 (2.7- 0.3+) 040420 703 0.5- 1.5+ 031228 704 0.5+ 1.3+ 040325 699 0.1+ 0.5+ 040420 360 0.1- 0.3- 031228 704 0.2+ 0.8+ 040325 699 0.7- 1.1- 040420 360 0.0 0.5- 031228 704 0.1- 0.1+ 040409 E12 0.1- 1.3+ 040420 360 0.3+ 0.3- 031228 704 0.5+ 0.4+ 040409 E12 0.3+ 1.0+ 040420 204 0.0 0.3- 2004/ 040409 E12 0.3- 0.3+ 040420 204 0.3- 0.0 040123 704 1.3+ 0.7- 040409 E12 0.4+ 0.9+ 040422 704 0.2+ 0.0 040123 704 0.3- 0.1- 040414 691 0.3- 0.3- 040422 704 1.5+ 0.9+ 040123 704 0.1+ 0.7+ 040414 691 0.2- 0.1- 040422 704 0.2- 0.4+ 040123 704 1.0+ 0.9- 040414 696 0.2+ 0.3- 040422 704 0.9+ 0.8- 040123 699 0.8- 0.0 040414 696 0.1- 0.4- 040423 213 0.7+ 0.5+ 040123 699 1.1- 0.3- 040414 691 0.0 0.1- 040424 170 0.6- 0.5- 040123 699 0.0 0.1- 040416 785 1.8+ 0.1- 040424 170 0.0 1.0- 040123 699 1.6- 0.0 040416 704 0.4+ 0.5+ 040424 170 0.2- 1.0- 040314 703 0.3- 0.4- 040416 704 0.7+ 0.5+ 040425 372 0.1- 0.5- 040314 703 (0.7- 2.1-) 040416 785 1.9- 1.5+ 040512 699 (0.8- 2.3+) 040314 703 0.1- 0.2- 040416 704 0.2+ 0.4- 040512 699 1.1- 0.8- 040314 703 0.5- 0.1- 040416 704 0.8+ 0.3+ 040512 699 1.8- 0.7+ 040316 704 0.6+ 1.2- 040416 704 0.0 0.4+ 040512 699 0.0 0.5- 040316 704 0.2- 0.1+ 040417 699 0.0 1.1- 040514 360 0.5+ 0.2+ 040316 704 0.1+ 0.3+ 040417 699 1.8- 0.6- 040514 360 1.1+ 0.3- 040322 704 0.4+ 0.7- 040417 699 0.6- 1.9+ 040514 360 0.2- 0.2+ 040322 704 0.2+ 0.2- 040417 699 0.1+ 0.3+ 040519 691 0.2+ 0.3+ 040322 704 0.5+ 1.2- 040420 703 1.4+ 0.9- 040519 691 0.2+ 0.2+ 040322 704 0.2+ 0.3- 040420 703 0.4- 0.9+ 040519 691 0.3+ 0.3+ 040325 699 0.9- 0.5- 040420 703 0.4- 0.3+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2005 Oct. 13