OAA computing section circular NK 1528 C/2007 H2 (Skiff)
The following improved orbital elements, by S. Nakano, are from 101 observations 2007 Apr. 19 to May 19. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.81 arc second. This is a revised version for NK 1483. Epoch = 2007 Mar. 1.0 TT T = 2007 Feb. 17.05375 +/- 0.00938 (m.e.) TT Peri. = 319.30192 +/- 0.00477 Node = 203.77184 +/- 0.00048 (2000.0) Inc. = 52.19528 +/- 0.01253 q = 1.4104855 +/- 0.0001065 AU e = 0.9718535 +/- 0.0007388 1/a = +0.0199552 +/- 0.0005238 1/AU P = 354.7 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2007/ 070419 J87 0.4- 0.3- 070422 850 0.6- 1.0- 070419 699 1.5- 1.7- 070419 B03 1.2+ 1.6+ 070422 850 1.0- 0.7- 070419 699 1.8- 1.1- 070419 J87 0.9- 1.6- 070422 850 0.6- 0.0 070419 699 (3.1- 1.9-) 070419 B03 1.1+ 0.6+ 070422 850 0.6- 0.2+ 070419 699 (2.3- 1.2-) 070419 J87 0.4- 0.1- 070422 104 0.5+ 0.6+ 070419 854 (0.2- 3.5+) 070419 B03 0.3+ 0.6+ 070422 104 0.0 0.4- 070419 854 (0.2- 3.9-) 070419 J87 0.5- 0.2+ 070422 104 0.2- 0.4- 070419 595 0.3+ 0.7+ 070420 854 0.3- 0.6- 070422 213 0.8- 0.6+ 070419 473 0.3- 0.1+ 070420 854 0.2+ 0.7+ 070422 213 1.3+ 1.8+ 070419 595 0.2+ 0.7+ 070420 854 0.1- 0.2+ 070423 850 0.3- 0.8+ 070419 595 1.6- 0.1+ 070420 H55 0.2- 0.0 070423 850 0.4- 0.1+ 070419 595 0.8- 0.4- 070420 854 0.5+ 0.1- 070423 850 0.9- 1.2- 070419 113 0.6- 1.0- 070420 H55 0.4+ 0.3+ 070423 850 1.0- 0.8- 070419 113 0.1- 0.8- 070420 H55 0.4+ 0.9+ 070423 400 0.5- 1.2- 070419 A41 1.9- 1.7- 070420 H55 0.7+ 0.8+ 070423 400 0.3+ 0.6- 070419 113 0.1- 0.8- 070420 H36 1.3- 1.6- 070423 400 1.5- 0.8- 070419 113 0.5- 0.3- 070420 H36 1.1+ 0.5- 070423 400 0.2- 1.7- 070419 A41 0.3- 0.3- 070420 H36 0.1- 0.4+ 070423 213 0.9+ 1.6+ 070419 A41 (3.0- 1.5-) 070420 G96 0.9+ 0.7+ 070424 213 0.4+ 0.8+ 070419 A41 0.7+ 0.2+ 070420 G96 0.9+ 0.8+ 070424 213 0.5+ 1.4+ 070419 A41 0.5+ 0.5+ 070420 G96 0.8+ 0.8+ 070425 349 1.0+ 1.5- 070419 473 0.7- 0.3- 070420 G96 0.9+ 0.9+ 070425 349 1.3+ 0.9- 070419 J95 1.0- 0.4- 070420 G96 1.1+ 0.7+ 070427 585 0.7- 0.5- 070419 473 1.7- 1.0- 070420 G96 0.8+ 0.8+ 070427 585 (2.0+ 2.3+) 070419 473 1.0- 1.2- 070420 G96 1.1+ 0.6+ 070509 850 0.6- 0.1+ 070419 J95 0.3+ 0.2- 070420 G96 1.0+ 0.8+ 070509 850 0.2+ 0.3+ 070419 J95 0.2- 0.9- 070420 246 0.0 0.5+ 070510 F85 0.5- 0.7+ 070419 473 (2.8- 1.0-) 070420 246 0.5+ 0.5+ 070510 F85 0.9+ 0.1+ 070419 A21 0.7+ 0.1+ 070420 246 0.1+ 0.6- 070511 J87 (2.5+ 3.4+) 070419 595 0.6- 0.1+ 070420 151 0.1+ 1.2+ 070511 J87 (2.1+ 3.0+) 070419 A21 1.2+ 0.3+ 070420 151 0.6- 0.6- 070511 J87 (1.2+ 2.9+) 070419 A21 1.0+ 0.0 070420 151 (0.0 2.6-) 070518 850 (1.6+ 2.7+) 070419 595 0.2+ 0.1+ 070420 A21 1.2+ 1.1+ 070518 850 (1.6- 3.8+) 070419 J95 1.1- 0.7- 070420 A21 0.8+ 0.2+ 070519 246 0.3- 0.4- 070419 B03 0.9+ 1.0+ 070420 A21 1.1- 0.6+ 070519 246 0.1+ 0.6- 070419 B03 1.7+ 0.9+ 070420 A21 1.2+ 0.9+ 070519 246 0.4- 0.7+ 070419 J87 0.5- 1.3- 070420 235 0.5+ 0.4+ 070519 246 0.4+ 0.2- 070419 B03 1.0+ 0.1+ 070422 850 0.6- 0.4+ 070519 215 (2.7+ 1.0+) 070419 J87 0.4- 0.7+ 070422 850 0.1- 0.8- ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2007 Aug. 13