OAA computing section circular NK 1638 C/2007 M1 (McNaught)
The following improved orbital elements, by S. Nakano, are from 97 observations 2007 June 16 to 2008 June 27. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.63 arc second. See an orbit on YC 2558. Epoch = 2008 Aug. 2.0 TT T = 2008 Aug. 11.35462 +/- 0.07009 (m.e.) TT Peri. = 52.60890 +/- 0.00492 Node = 326.80734 +/- 0.00016 (2000.0) Inc. = 139.72060 +/- 0.00022 q = 7.4748276 +/- 0.0001711 AU e = 0.9953768 +/- 0.0000593 1/a = +0.0006185 +/- 0.0000079 1/AU origin = +0.000709 (Q= 7) future = +0.000738 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2007/ 070704 850 (2.5- 2.5-) 070812 704 0.9+ 1.3+ 070616 E12 0.5- 0.5- 070704 850 (2.5- 0.5-) 070812 704 0.4+ 0.8+ 070616 E12 0.1+ 0.7+ 070705 850 0.7+ 0.9- 070812 704 0.1- 0.1+ 070616 E12 0.3- 0.2+ 070705 850 0.1+ 1.5- 070812 204 0.4+ 0.4- 070616 E12 0.5- 0.1+ 070705 850 0.1- 0.4- 070813 204 0.4- 0.0 070616 E12 0.5- 0.9- 070706 213 0.3+ 0.7+ 070813 046 0.1- 0.1- 070617 H55 0.1+ 0.2- 070706 213 0.2+ 0.6+ 070813 046 0.1+ 0.3- 070617 H55 0.3- 0.3+ 070706 213 0.1+ 0.9+ 070813 046 0.1- 0.5- 070617 734 1.0- 0.8+ 070706 147 1.0+ 1.8- 070814 A79 (2.0+ 0.1-) 070617 H55 0.2- 0.7+ 070706 147 0.8+ 1.2- 070814 A79 0.9+ 0.5+ 070617 734 0.2- 0.0 070709 850 0.5+ 0.1- 070814 A79 0.4+ 0.5- 070617 734 0.5+ 0.9- 070709 850 0.4+ 0.5- 070816 585 0.8- 0.5- 070618 H55 0.5- 0.3+ 070709 A50 0.8+ 0.9- 070816 585 1.7- 1.2- 070618 H55 0.2+ 0.4+ 070709 A50 0.9+ 1.0- 070816 585 0.4- 0.4- 070618 H55 0.1- 0.7+ 070709 A50 0.4+ 0.9- 070816 585 1.0- 1.3- 070618 H55 0.5- 0.3+ 070709 A50 1.0+ 0.4- 070819 A79 1.3+ 0.7+ 070618 H55 0.2- 0.0 070709 A50 1.1+ 0.2+ 070819 A79 0.5- 0.6+ 070618 673 1.1- 0.3- 070709 A50 1.6+ 0.4- 070821 585 (7.1- 1.6+) 070618 673 0.8- 0.4+ 070711 474 0.1- 0.2- 070822 585 0.1- 1.1+ 070618 673 0.8- 0.5+ 070711 474 0.0 0.0 070822 585 0.4- 0.1- 070618 673 0.0 0.2+ 070711 474 0.3- 0.0 070822 585 1.8+ 0.4+ 070618 651 1.0- 0.9+ 070714 215 0.5- 0.4- 070907 204 0.4+ 1.4+ 070618 651 0.5+ 0.2- 070714 215 0.0 0.1- 070908 673 0.1+ 0.1- 070619 A77 0.3+ 0.0 070714 215 0.5+ 0.2+ 070908 673 0.0 0.2- 070620 A77 0.1- 0.1- 070714 A77 (3.4+ 0.8+) 070908 673 0.3- 0.1- 070620 A77 0.6+ 1.0+ 070714 A77 0.0 0.6+ 070908 673 0.3- 0.2- 070621 850 1.6+ 0.6- 070717 585 (1.0- 2.2-) 2008/ 070621 850 (1.8+ 2.1+) 070804 204 0.1+ 0.2+ 080622 941 0.3- 0.2- 070621 415 1.1- 0.4+ 070804 147 1.1- 1.1+ 080622 941 0.3- 0.3- 070621 415 0.4+ 0.0 070805 147 1.1- 0.3- 080622 941 0.2- 0.3- 070622 850 0.3+ 0.3+ 070805 585 0.4- 1.1+ 080622 941 0.3- 0.6- 070622 850 0.4+ 0.1- 070805 585 0.8- 0.4+ 080627 941 0.2+ 0.4+ 070622 213 0.1+ 0.4+ 070805 118 0.3- 0.4- 080627 941 0.4+ 0.4+ 070622 213 0.1- 0.5+ 070805 118 0.3- 0.5+ 080627 941 0.5+ 0.4+ 070624 673 0.0 0.0 070807 118 1.3- 0.4- 070624 673 0.0 0.1- 070807 118 0.0 0.4- ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2008 July 1