Nakano Note (Nakano wa Kangaeru noda) NK 2085 C/2009 T1 (McNaught)
The following improved orbital elements, by S. Nakano, are from 129 observations 2009 Oct. 9 to 2011 Mar. 7. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.68 arc second. The comet will pass 3.97 AU from Jupiter on 2012 Mar. 12 UT. See the previous orbits in NK 1878 and NK 1986 (= HICQ 2010/2011). Epoch = 2009 Oct. 16.0 TT T = 2009 Oct. 8.18197 +/- 0.00678 (m.e.) TT Peri. = 282.52223 +/- 0.00061 Node = 54.40060 +/- 0.00006 (2000.0) Inc. = 89.89651 +/- 0.00003 q = 6.2203895 +/- 0.0000190 AU e = 0.9984300 +/- 0.0000185 1/a = +0.0002524 +/- 0.0000030 1/AU origin = +0.000928 (Q= 7) future = +0.000992 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2009/ 091125 D25 0.2- 0.6+ 100115 C51 0.5- 1.9+ 091009 E12 0.2- 0.4- 091125 D25 0.3- 0.6+ 100115 C51 1.6- 0.1- 091009 E12 0.5+ 0.2- 091127 415 1.2- 1.0- 100116 C51 0.0 0.9- 091009 E12 0.7+ 0.5+ 091127 415 0.5- 0.6+ 100116 C51 0.2+ 0.2- 091009 E12 0.2+ 0.2- 091206 415 0.4- 0.6+ 100116 C51 0.7+ 1.0- 091010 474 0.2+ 0.1+ 091206 415 0.4- 0.3+ 100116 C51 0.6- 1.6+ 091010 D90 0.2+ 0.7+ 091206 415 0.1+ 0.4+ 100119 423 1.3- 0.0 091010 D25 0.3+ 0.0 091206 415 0.0 0.8+ 100119 423 0.4+ 0.5+ 091010 474 0.3+ 0.2+ 091212 423 0.7- 0.2- 100120 423 0.4- 0.1- 091010 474 0.0 0.1- 091212 423 0.2- 0.4+ 100120 423 0.4+ 0.8+ 091010 474 0.0 0.2- 091215 415 0.8- 0.1+ 100911 H06 0.9+ 0.2+ 091010 D25 0.1+ 0.1- 091215 415 0.6- 0.5+ 100911 H06 0.3+ 0.1- 091010 D25 0.8+ 0.2+ 091216 423 0.0 0.7- 100911 H06 0.1- 0.5+ 091010 D90 0.5+ 0.2- 091216 423 0.2- 0.1+ 101002 H36 0.7- 1.5+ 091010 E12 0.5+ 0.1+ 2010/ 101002 H36 0.8- 0.0 091010 E12 0.1+ 0.0 100104 415 0.8- 1.3+ 101005 372 0.9+ 1.2+ 091010 E12 0.3+ 0.2- 100104 415 0.8- 0.2+ 101010 349 0.9- 0.1- 091010 D25 (2.0- 0.8+) 100105 D90 0.8- 0.6+ 101010 349 0.1- 1.4- 091010 D25 (7.0- 3.7-) 100105 D90 0.2- 0.1+ 101104 703 0.2+ 0.4+ 091011 I77 1.2- 1.4- 100108 415 0.5- 0.2+ 101104 703 0.2+ 0.3+ 091011 I77 0.0 0.6+ 100108 415 0.3- 0.7+ 101104 703 0.3- 0.8- 091011 I77 0.2+ 0.3- 100108 423 0.1- 0.6+ 101104 703 1.8- 0.1- 091011 474 0.1+ 0.0 100109 423 0.4- 0.0 101107 415 0.3- 1.5+ 091011 474 0.1+ 0.1+ 100109 423 0.5+ 0.8- 101107 415 1.0- 0.5+ 091011 474 0.1+ 0.1+ 100114 C51 0.7+ 0.4- 101204 349 0.9+ 0.5- 091011 423 0.3- 0.1- 100114 C51 0.3- 0.0 101204 349 0.5+ 0.3- 091011 423 0.1+ 0.2- 100114 C51 (1.4+ 2.5-) 101211 204 0.4- 1.2+ 091014 423 0.1+ 0.4+ 100114 C51 0.2- 1.5- 101213 703 0.5+ 0.3+ 091014 423 0.3+ 1.0+ 100114 C51 0.5- 0.7+ 101213 703 0.2+ 0.4+ 091016 423 0.0 0.2+ 100114 C51 0.5+ 0.2- 101213 703 0.5+ 1.2- 091016 423 0.1- 0.2+ 100114 C51 (2.8+ 3.4+) 101213 703 0.9+ 0.6- 091016 D90 0.9- 0.4- 100114 C51 0.1+ 1.5- 101231 372 0.0 0.6+ 091016 D90 0.1- 0.1- 100114 C51 0.8+ 0.6- 101231 372 0.7+ 0.8- 091018 423 0.3+ 0.0 100114 C51 0.7+ 1.0- 101231 372 0.4- 0.7- 091018 423 0.3- 0.2- 100115 C51 0.1- 1.1- 2011/ 091105 D90 0.4+ 0.2- 100115 C51 1.9+ 1.7- 110102 900 1.2+ 1.0- 091105 D90 0.0 0.1+ 100115 C51 1.0+ 1.2+ 110102 900 0.2+ 1.5- 091105 D90 0.2- 0.2+ 100115 C51 1.2- 0.2+ 110206 215 0.5- 1.1- 091108 415 0.6+ 0.1- 100115 C51 1.1+ 1.6- 110206 215 0.0 0.8+ 091108 415 0.6- 1.0- 100115 C51 0.5+ 1.0- 110206 215 0.8- 0.4+ 091109 423 0.1- 0.1- 100115 C51 (1.7- 2.1+) 110208 104 (0.2- 2.4-) 091109 423 0.2+ 0.5+ 100115 C51 (0.2- 3.6+) 110208 104 0.9- 0.5- 091110 423 0.5- 0.5+ 100115 C51 (3.3- 2.8+) 110213 349 (1.8- 2.3-) 091110 423 0.1+ 0.2+ 100115 C51 (1.6- 2.9-) 110213 349 0.8- 1.0- 091113 D25 0.7+ 0.8+ 100115 C51 0.8+ 0.3- 110302 E07 0.6+ 1.2+ 091113 D25 0.3- 0.4+ 100115 C51 0.2- 1.5- 110302 E07 (3.0+ 4.5-) 091113 D25 0.3+ 0.8+ 100115 C51 1.6+ 0.6- 110307 E07 0.7- 0.4+ 091118 E12 0.1- 0.4- 100115 C51 (0.5+ 3.2-) 110307 E07 1.4+ 1.1+ ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2011 May 12