OAA computing section circular NK 926R P/2003 F2 (NEAT)
The following improved orbital elements, by S. Nakano, are from 64 observations 2003 Mar. 27-Apr. 9. The mean residual is +/- 0.62 arc second. This orbit shows that the comet didn't close approach to P/2001 BB50 (LINEAR-NEAT) in 1989 although both comets and 1931 AN have still smilar orbits in angular elements. T = 2003 Apr. 19.32715 +/- 4.15006 (m.e.) TT Peri. = 192.91051 +/- 3.50704 Node = 358.89241 +/- 3.48233 (2000.0) Inc. = 11.32517 +/- 0.27599 q = 2.9412205 +/- 0.0172016 AU e = 0.5448627 +/- 0.0021628 a = 6.4622715 +/- 0.0075356 AU n' = 0.05999655 +/- 0.00010494 P = 16.428 +/- 0.0287345 years (+/-10.50 day) The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2003/ 030330 734 1.8+ 0.7+ 030401 649 0.0 0.8- 030327 644 0.1+ 0.4+ 030330 734 1.2- 0.4- 030401 649 0.3+ 0.4- 030327 644 0.7+ 0.4+ 030330 734 0.1+ 0.1- 030401 649 0.3- 0.2- 030327 644 0.4+ 0.5+ 030330 673 0.8+ 0.3+ 030401 711 1.6- 0.5- 030328 809 0.2+ 0.1- 030330 673 0.7- 0.1- 030401 711 1.4- 0.7- 030328 809 0.2+ 0.1- 030330 673 0.1- 0.5- 030401 711 0.2- 0.2- 030328 809 0.1+ 0.1- 030330 673 0.8+ 0.7- 030401 176 0.3- 0.5+ 030328 246 1.2+ 0.5- 030330 673 0.2- 1.1- 030401 176 0.3- 0.2+ 030328 246 0.6+ 0.8- 030330 448 0.1+ 0.1+ 030401 176 0.3- 0.0 030328 246 0.5- 1.2+ 030330 448 0.1+ 0.8+ 030401 176 0.1- 0.3- 030328 246 0.1+ 0.2+ 030330 448 0.5+ 0.7+ 030406 360 0.5+ 0.1- 030328 246 0.9- 0.9+ 030331 711 1.8+ 0.4+ 030406 360 0.1+ 0.0 030328 557 0.6- 1.0- 030331 711 0.7+ 0.8- 030406 360 0.2- 0.0 030329 557 0.2- 0.6+ 030331 711 0.3- 0.4+ 030407 691 0.9+ 0.2- 030329 557 1.4- 1.3- 030331 673 0.9+ 0.0 030407 691 0.7+ 0.2+ 030329 557 1.6- 0.7- 030331 673 0.6+ 0.0 030407 691 0.8+ 0.0 030329 809 0.0 0.1+ 030331 673 0.0 0.1+ 030409 246 0.3+ 0.5- 030329 809 0.1+ 0.0 030331 246 0.3- 0.1- 030409 246 0.7- 0.6+ 030329 809 0.1+ 0.0 030331 246 0.3- 1.5+ 030409 246 0.1+ 0.3- 030329 649 0.5- 0.2- 030331 246 0.1- 0.3+ 030409 246 0.3+ 0.4+ 030329 649 0.7- 0.3+ 030331 557 0.3- 0.1- 030409 246 1.5- 0.2+ 030329 649 0.3+ 0.3+ 030331 557 0.5+ 0.5+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2003 Apr. 14