Nakano Note (Nakano wa Kangaeru noda) NK 1880 C/2009 W2 (Boattini)
The following improved orbital elements, by S. Nakano, are from 86 observations 2008 Dec. 22 to 2010 Jan. 23. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.60 arc second. The comet has passed 1.97 AU from Saturn on 2007 May 18 and will pass 2.91 AU from Jupiter on 2011 Oct. 29 UT. The prediscovery observations in 2008 were found by M. Meyer. Epoch = 2010 May 4.0 TT T = 2010 May 1.78143 +/- 0.10638 (m.e.) TT Peri. = 121.33830 +/- 0.00994 Node = 199.58433 +/- 0.00114 (2000.0) Inc. = 164.48993 +/- 0.00017 q = 6.9071911 +/- 0.0001031 AU e = 0.9992977 +/- 0.0004816 1/a = +0.0001017 +/- 0.0000697 1/AU origin = +0.000427 (Q= 6) future = +0.000469 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2008/ 091124 H01 0.9- 0.0 091209 473 0.1- 0.1+ 081222 G96 0.2- 0.3+ 091124 926 0.6+ 0.6+ 091211 372 0.1- 0.4+ 081222 G96 0.2+ 0.7- 091124 926 0.0 0.0 091211 372 1.2+ 1.9+ 081222 G96 0.5+ 0.5+ 091124 926 0.3- 0.1+ 091211 372 0.7+ 0.6+ 081222 G96 0.6- 0.3- 091124 A77 1.0+ 0.2+ 091216 204 0.2- 0.2- 2009/ 091125 372 0.2- 1.7- 091216 204 0.3+ 0.1+ 091121 703 0.0 0.9+ 091125 372 0.4+ 1.0- 091216 372 0.1- 0.8- 091121 703 1.1+ 1.2+ 091126 850 0.3+ 0.1- 091216 372 0.4- 0.5+ 091121 703 0.4- 1.0- 091126 850 0.3- 0.2+ 091223 585 0.2+ 0.1+ 091121 703 1.0- 0.3- 091126 H10 0.7+ 0.1+ 091223 372 0.4+ 0.4- 091123 703 0.3+ 1.2+ 091126 H10 1.5+ 1.0- 091223 349 1.3+ 0.9+ 091123 703 0.2- 1.1- 091126 H10 0.5- 0.8- 091223 349 0.5+ 0.1- 091123 703 0.4- 0.7- 091126 G96 0.0 0.2+ 091226 G68 0.6- 0.0 091123 G96 0.1- 0.2+ 091126 G96 0.6+ 0.2- 091226 G68 0.6- 0.1+ 091123 G96 0.7- 0.0 091126 G96 0.0 0.2+ 091228 118 0.8- 0.0 091123 G96 0.2- 0.1+ 091126 G96 0.6+ 0.2- 091228 118 0.8- 0.3+ 091123 G96 0.9- 0.4+ 091126 G96 0.6- 0.1- 091228 118 0.5- 0.1- 091124 B18 0.2+ 0.1- 091126 349 1.6+ 0.8- 091228 118 0.6- 0.2- 091124 B18 0.3- 0.0 091126 349 1.3+ 0.5- 2010/ 091124 B18 0.3- 0.6- 091127 585 0.1- 0.6- 100104 215 0.1- 0.3+ 091124 B18 0.2- 0.4- 091127 585 0.9- 0.9+ 100104 215 0.1- 0.3+ 091124 682 0.5+ 0.1- 091127 585 0.5- 1.0+ 100104 215 0.0 0.2- 091124 682 0.2+ 0.4+ 091127 585 0.1+ 0.9+ 100117 349 1.7+ 0.3+ 091124 G96 0.3- 0.1+ 091127 585 1.2+ 1.1+ 100117 349 0.9+ 0.9- 091124 G96 0.8+ 0.2+ 091207 473 0.1+ 0.0 100118 204 0.3- 0.1- 091124 G96 0.3- 0.2+ 091207 473 0.2- 0.1+ 100119 204 0.3- 0.4- 091124 G96 0.1+ 0.3+ 091209 104 0.4- 0.0 100121 204 0.2+ 0.7- 091124 H01 1.0- 0.0 091209 104 0.1- 0.4- 100123 349 0.2- 0.1+ 091124 H01 0.9- 0.1+ 091209 104 0.5- 0.7- 100123 349 0.6- 0.2- 091124 H01 1.0- 0.1- 091209 473 0.1- 0.2+ ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2010 Feb. 11