OAA computing section circular NK 1476 C/2006 WD4 (Lemmon)
The following improved orbital elements, by S. Nakano, are from 84 observations 2006 Nov. 20 to 2007 June 3. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.61 arc second. See orbits on YC 2540 and YC 2554. Epoch = 2007 Apr. 10.0 TT T = 2007 Apr. 28.39847 +/- 0.00002 (m.e.) TT Peri. = 292.69173 +/- 0.00004 Node = 226.79052 +/- 0.00004 (2000.0) Inc. = 152.70441 +/- 0.00010 q = 0.5912376 +/- 0.0000004 AU e = 0.9989791 +/- 0.0000011 1/a = +0.0017267 +/- 0.0000019 1/AU origin = +0.002245 (Q= 7) future = +0.001788 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2006/ 061201 G96 1.1+ 0.1+ 061225 568 0.3- 0.2+ 061120 G96 0.1+ 0.4- 061212 G96 0.2+ 0.2- 061225 204 0.6- 0.4+ 061120 G96 0.4- 0.4+ 061212 G96 0.1- 0.2- 2007/ 061120 G96 0.3- 0.2+ 061213 734 0.2+ 0.3+ 070430 E26 0.8- 1.0+ 061120 G96 0.4+ 0.0 061213 734 0.9+ 0.2+ 070430 E26 0.5+ 0.5- 061120 J95 0.1+ 0.0 061213 734 1.1+ 0.0 070502 E26 0.6+ 1.6+ 061120 J95 0.6- 0.3- 061213 734 1.1+ 0.4+ 070502 E26 (0.7+ 2.2+) 061120 J95 0.1- 0.1+ 061214 G96 0.1+ 0.9- 070503 E26 (2.5+ 0.1+) 061121 854 0.8- 0.3+ 061214 G96 0.1+ 0.5- 070503 E26 1.5+ 0.4+ 061121 854 0.8+ 1.5+ 061214 G96 0.3+ 0.7- 070507 E12 0.3- 0.9- 061121 G96 0.1+ 0.1+ 061214 G96 0.7+ 0.1+ 070507 E12 0.4- 0.8- 061121 G96 0.3+ 0.2+ 061214 G96 0.2- 0.3- 070507 E12 0.1+ 0.4- 061121 G96 0.0 0.1- 061214 G96 0.2+ 0.2- 070526 349 0.3+ 0.3- 061121 G96 0.0 0.1+ 061214 G96 0.7- 0.4- 070526 349 0.4+ 0.1+ 061121 734 0.4- 0.8+ 061214 G96 0.1+ 0.2- 070526 349 0.8- 0.9- 061121 734 0.8+ 0.2- 061221 G96 0.2+ 0.2- 070526 349 0.8- 0.5- 061121 734 0.6+ 1.2- 061221 G96 0.0 0.2+ 070527 J70 (6.2+ 0.7-) 061121 711 0.3- 0.3+ 061221 G96 0.6+ 0.6+ 070527 J70 (2.7+ 0.6+) 061121 711 0.0 0.2- 061221 G96 0.5+ 0.0 070527 J70 (2.4+ 0.8+) 061121 711 0.3- 0.5+ 061222 715 0.0 0.4+ 070528 J70 (3.7+ 1.4+) 061122 734 0.2+ 0.2- 061222 715 0.3+ 0.0 070528 J70 0.8+ 0.2+ 061122 734 1.1+ 1.4- 061222 715 0.4+ 0.5+ 070528 J70 1.8+ 0.6+ 061122 291 1.5- 0.4- 061222 G96 0.1- 0.2- 070528 J70 (2.6+ 0.9-) 061122 291 0.7- 0.3+ 061222 G96 0.9- 1.1- 070529 619 0.0 0.6+ 061122 734 0.2+ 0.0 061222 G96 0.3- 0.0 070529 619 (4.0+ 0.0 ) 061122 291 0.5- 0.1- 061222 G96 0.1- 0.4- 070529 619 (2.9+ 0.2+) 061122 734 1.5+ 0.4- 061223 204 0.1+ 0.0 070602 349 0.4+ 0.0 061122 G96 0.0 0.1+ 061225 G96 0.3+ 0.2- 070602 349 0.7+ 0.3+ 061122 G96 0.2- 0.1+ 061225 G96 0.0 0.1+ 070602 349 0.4+ 0.2+ 061122 G96 0.4- 0.1+ 061225 G96 0.4- 0.2- 070603 H06 1.8- 0.3+ 061201 G96 0.8- 0.2- 061225 G96 0.8+ 0.4- 070603 H06 1.5- 0.3- 061201 G96 0.3+ 1.0- 061225 568 0.2- 0.1+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2007 June 6