OAA computing section circular NK 918 C/2003 A2 (Gleason)
The following improved orbital elements, by S. Nakano, are from 94 observations 2002 Jan. 8 to 2003 Mar. 8. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.62 arc second. This comet has the maximum perihelion distance in the recorded comets. Also 2nd, C/2000 A1 (Montani), q= 9.74 AU, 3rd, P/2001 T4 (NEAT), q= 8.56 AU, 4th, 95P/Chiron, q= 8.45 AU. Epoch = 2003 Nov. 17.0 TT T = 2003 Nov. 5.81404 +/- 0.87925 (m.e.) TT Peri. = 346.66673 +/- 0.03328 Node = 154.54483 +/- 0.00074 (2000.0) Inc. = 8.06126 +/- 0.00021 q = 11.4270030 +/- 0.0009741 AU e = 1.0069244 +/- 0.0001969 1/a = -0.0006060 +/- 0.0000172 1/AU origin = +0.000032 (Q= 7) future = +0.000125 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2002/ 030111 858 1.8+ 1.4+ 030128 620 0.7+ 0.8- 020108 644 0.0 0.3- 030111 246 1.3+ 1.4+ 030128 620 0.7- 0.0 020108 644 0.5+ 0.6- 030112 246 1.0+ 1.6+ 030129 291 0.6- 0.4- 020108 644 0.1+ 0.8- 030112 246 0.3- 0.5- 030129 291 0.1- 0.3+ 020206 644 0.2- 0.8+ 030112 246 0.4- 1.0+ 030129 291 0.6- 0.6- 020206 644 0.4- 0.6+ 030112 246 0.9+ 0.5- 030201 246 0.1+ 0.1+ 020206 644 0.3- 0.6+ 030112 246 0.4+ 0.1+ 030201 246 0.2- 0.5- 020216 644 0.0 0.3- 030112 850 (2.2+ 0.4-) 030201 246 0.5- 0.3+ 020216 644 0.3+ 0.1- 030112 858 1.5+ 0.4- 030201 246 0.1+ 0.2- 020216 644 0.0 0.3- 030112 858 1.9+ 0.9- 030201 246 0.1+ 0.6- 020305 644 0.4+ 0.1+ 030112 850 (2.9+ 0.4+) 030201 246 0.1+ 0.4+ 020305 644 0.3- 0.3- 030112 291 1.2- 0.6+ 030202 360 0.1- 0.6- 020305 644 0.2- 0.4+ 030112 291 0.7- 0.5- 030202 360 0.1- 0.7- 021114 644 0.1- 0.5- 030112 291 1.2- 0.7+ 030202 360 0.1- 0.5- 021114 644 0.1- 0.3- 030113 291 0.4- 0.0 030206 360 0.4- 0.4- 021114 644 0.3- 1.2- 030113 291 0.2- 0.5+ 030206 360 0.7- 0.7- 021120 644 1.2- 0.5+ 030113 291 0.0 0.2- 030222 246 0.4- 0.5+ 2003/ 030113 291 0.2+ 0.2- 030222 246 0.1+ 0.6+ 030110 291 0.2- 0.5+ 030113 291 0.4- 0.1- 030222 246 0.3+ 0.0 030110 291 0.2+ 0.2+ 030113 291 0.3- 0.2+ 030222 246 0.3+ 0.6+ 030110 291 0.3+ 0.0 030113 413 0.6+ 0.7- 030224 246 0.2- 0.5- 030110 291 0.1- 0.3- 030113 413 0.4+ 0.5- 030224 246 0.2- 0.0 030110 291 0.3+ 0.4+ 030113 413 0.3- 0.5- 030224 246 1.0+ 0.4- 030110 291 0.5- 1.1+ 030114 850 0.3+ 0.3- 030224 246 0.3+ 0.3- 030111 850 (3.1+ 3.5-) 030114 850 0.6- 1.2+ 030224 246 0.6+ 0.2- 030111 850 (0.4- 3.6-) 030114 711 1.3- 0.9- 030224 246 0.6+ 0.4- 030111 850 (1.9- 2.3+) 030114 850 0.6+ 0.0 030225 024 0.7- 1.3+ 030111 291 0.5- 0.0 030114 711 0.0 0.7+ 030227 230 0.5- 0.3- 030111 850 0.5- 1.6+ 030125 204 0.3+ 0.8- 030228 230 0.0 0.8- 030111 858 0.6+ 0.1- 030125 204 0.1- 0.4- 030304 213 (2.8+ 1.3-) 030111 291 0.0 0.3+ 030125 204 0.1+ 0.4+ 030304 213 0.1- 0.2- 030111 850 1.1+ 0.7+ 030127 644 0.1- 0.7+ 030304 213 1.5- 1.5- 030111 858 0.5+ 0.7- 030127 644 0.1+ 0.4+ 030308 291 1.3+ 0.1+ 030111 291 0.5- 0.0 030127 644 0.0 0.0 030308 291 0.7- 0.4+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2003 Mar. 14