OAA computing section circular NK 1350 P/1889 M1 = 2006 M3 (Barnard 2)
The following improved orbital elements, by S. Nakano, are from 62 observations 1889 to 2006. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 1.26 arc seconds (cf. IAUC 8726). The comet will be given the permanent number = 177P. Epoch = 2006 Aug. 13.0 TT T = 2006 Aug. 28.68789 +/- 0.00154 (m.e.) TT Peri. = 60.46210 +/- 0.00071 Node = 272.06648 +/- 0.00004 (2000.0) Inc. = 31.21754 +/- 0.00012 q = 1.1071868 +/- 0.0000084 AU e = 0.9543982 +/- 0.0000004 a = 24.2794729 +/- 0.0000108 AU n' = 0.00823844 +/- 0.00000001 P = 119.635 +/- 0.0000802 years T = 1889 June 21.23166 TT Epoch = 1889 June 7.0 TT Peri. = 60.14391 e = 0.9539862 Node = 272.54490 (2000.0) a = 23.9703744 AU Inc. = 31.22043 n'= 0.00839831 q = 1.1029690 AU P = 117.358 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1889/ 060623 J87 0.2+ 0.3- 060624 704 0.1+ 0.1+ 890624 662 2.5- 2.5+ 060623 J87 0.2+ 0.3+ 060624 704 0.0 0.3+ 890625 662 (8.0- 2.2+) 060623 J87 0.3+ 0.3+ 060624 704 0.1+ 0.8- 890626 662 0.6+ 2.0+ 060623 118 0.2- 0.5- 060624 H06 1.3- 1.4+ 890627 662 0.1+ 0.3- 060623 118 0.3+ 0.6+ 060624 H06 0.7+ 1.4+ 890628 020 (6.5- 2.6+) 060623 J87 0.3+ 0.6+ 060624 H06 0.0 0.6+ 890628 045 1.1- 3.5- 060623 118 0.1- 0.4+ 060624 428 0.7- 1.5- 890630 662 1.5+ 1.7- 060623 118 0.0 0.5- 060624 428 0.6- 0.8- 890701 662 0.8+ 0.4+ 060623 118 0.3+ 0.2- 060624 428 0.1- 0.6- 890702 662 2.6- 3.1- 060623 176 0.4+ 0.6+ 060625 H06 0.2+ 0.3+ 890703 662 (4.8+ 5.6-) 060623 176 0.2+ 0.1+ 060625 H06 0.2+ 0.0 890704 662 (2.3+ 6.7-) 060623 176 0.4- 0.4+ 060625 H06 (1.8+ 2.7+) 890705 662 0.4- 2.1- 060623 204 0.1- 0.3+ 060625 H06 0.2- 0.4- 890705 045 4.7+ 1.3+ 060623 204 0.5+ 0.3+ 060625 H06 0.4- 0.2- 890706 662 1.5- 4.2- 060623 204 0.3- 0.1- 060625 H06 0.5+ 0.2- 890708 662 2.6+ 3.9+ 060623 204 0.3+ 0.3+ 060625 H06 0.0 1.0- 890710 662 2.4- 1.7+ 060624 I77 0.1- 0.2- 060625 213 0.8- 0.3- 890711 662 3.6+ 1.4- 060624 I77 0.4- 0.5- 060625 213 0.7- 0.3- 890801 662 (0.4- 11.6+) 060624 I77 0.0 0.1- 060625 213 1.0- 0.1- 890807 662 0.6- 5.2+ 060624 734 0.0 0.4+ 060627 349 0.3+ 0.2- 2006/ 060624 734 0.2- 0.3+ 060627 349 0.2+ 0.0 060623 704 0.6+ 0.4+ 060624 734 0.1+ 0.2+ 060627 349 0.7+ 0.4- 060623 704 0.1+ 0.7- 060624 734 0.1- 0.3+ 060623 704 0.5+ 0.1+ 060624 734 0.2+ 0.3+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2006 June 28