Nakano Note (Nakano wa Kangaeru noda) NK 1777 P/2005 N3 (Larson)
The following improved orbital elements, by S. Nakano, are from 97 observations 2005 July 3 to Dec. 2. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.72 arc second. See the previous orbit in NK 1292. Epoch = 2005 Dec. 16.0 TT T = 2005 Dec. 10.59903 +/- 0.00723 (m.e.) TT Peri. = 58.51471 +/- 0.00293 Node = 298.60413 +/- 0.00026 (2000.0) Inc. = 6.32502 +/- 0.00007 q = 2.1970216 +/- 0.0000194 AU e = 0.3881403 +/- 0.0000224 a = 3.5907274 +/- 0.0000376 AU n' = 0.14485397 +/- 0.00000228 P = 6.804 +/- 0.0001070 years (+/- 0.04 day) The predicted orbit for the 2012 return is as follows: T = 2012 Sept.29.55316 TT Epoch = 2012 Sept.30.0 TT Peri. = 58.82512 e = 0.3896604 Node = 298.48062 (2000.0) a = 3.5830716 AU Inc. = 6.32553 n'= 0.14531848 q = 2.1868906 AU P = 6.782 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2005/ 050730 415 1.9- 1.2- 051001 G96 0.6- 0.0 050703 G96 0.8- 0.4- 050730 415 1.1- 1.0- 051001 118 1.3+ 0.6- 050703 G96 0.7- 0.3- 050731 E12 1.2- 0.8- 051001 118 1.6+ 0.5- 050703 G96 0.1- 0.3- 050731 E12 0.3+ 1.1- 051008 703 1.4- 0.2+ 050703 G96 0.0 0.6- 050731 E12 1.6- 0.2- 051008 703 (3.5- 0.9+) 050705 G96 0.0 0.2- 050731 E12 0.9- 0.0 051008 703 1.6+ 0.1- 050705 G96 0.0 0.6- 050803 D74 0.2+ 1.5+ 051008 703 0.5+ 0.2- 050705 G96 0.0 0.3+ 050803 D74 0.9+ 1.4+ 051022 703 1.5+ 1.4- 050705 G96 0.2- 0.1+ 050804 D74 0.2- 0.9+ 051022 703 1.8+ 0.3- 050705 G96 0.2- 0.1+ 050804 D74 0.3- 1.5+ 051022 703 1.7+ 0.7+ 050705 G96 0.6+ 0.3+ 050804 D74 0.1- 0.8+ 051105 J76 0.1- 0.5+ 050705 G96 0.1- 0.2+ 050806 644 0.4- 0.1+ 051105 J76 0.0 0.3+ 050705 G96 0.4- 0.2- 050806 644 0.0 0.0 051105 J76 1.1- 1.4+ 050705 413 0.7+ 0.2- 050806 644 0.0 0.1+ 051112 703 0.2+ 0.5+ 050705 413 0.8+ 0.0 050811 673 0.0 0.4+ 051112 703 1.3+ 0.2+ 050706 204 0.9- 0.4+ 050811 673 0.1+ 0.5+ 051112 703 1.2+ 0.4- 050709 673 0.7- 1.0- 050811 673 0.2+ 0.6+ 051112 703 (2.0- 0.5-) 050709 673 0.5+ 1.1- 050811 673 0.1- 0.4+ 051112 568 0.7- 0.1- 050709 673 1.4+ 1.1- 050829 461 0.4- 0.1- 051112 568 0.7- 0.1- 050710 673 0.4- 0.5+ 050829 461 0.1+ 0.1- 051119 699 (0.3+ 3.1+) 050710 673 0.1- 0.2+ 050829 170 0.6+ 0.5- 051119 699 1.7+ 0.7+ 050710 673 0.2+ 0.1- 050829 170 0.6+ 0.5- 051119 699 (8.4+ 0.2-) 050711 691 0.8+ 0.1+ 050829 170 0.6+ 0.5- 051125 703 1.5+ 0.0 050711 691 0.4+ 0.1+ 050829 170 0.0 0.4+ 051125 703 1.6+ 0.4+ 050711 691 0.3+ 0.0 050901 691 0.1- 0.0 051125 703 1.2+ 0.0 050713 213 1.0+ 0.8+ 050901 691 0.5+ 0.0 051125 703 0.7+ 0.8- 050714 213 0.4+ 1.1+ 050901 691 0.1+ 0.0 051201 703 0.2+ 0.2+ 050718 644 0.0 0.3- 050908 673 0.2+ 0.4+ 051201 703 1.5+ 1.4+ 050718 644 0.3+ 0.3- 050908 673 0.1- 0.2+ 051201 703 0.4+ 1.0+ 050718 644 0.9+ 0.6+ 050908 673 1.1- 0.2+ 051201 703 0.3- 0.7- 050719 147 (3.0+ 2.8+) 050908 673 0.5- 0.0 051202 704 0.6+ 0.1- 050719 147 0.0 0.9+ 050925 215 0.6+ 0.9- 051202 704 1.1- 0.8- 050719 147 0.5+ 0.7+ 051001 G96 0.6- 0.3- 051202 704 (2.4- 1.3+) 050728 415 0.4+ 0.7- 051001 G96 0.5- 0.2- 051202 704 0.6- 0.2- 050728 415 0.2- 0.5- 051001 G96 0.7- 0.1- ( ) -------- Rejected Obs.
Managing Director of the Oriental Astronomical Association Syuichi Nakano 2009 Apr. 23