Nakano Note (Nakano wa Kangaeru noda) NK 3423 254P/McNaught
The following improved orbital elements, by T. Kobayashi, are from 108 observations 1980 to 2012. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.59 arc second. See the previous orbits in NK 2038, NK 2131 and NK 2171 (= HICQ 2012-2017). Epoch = 2010 Oct. 11.0 TT T = 2010 Oct. 26.63417 +/- 0.00153 (m.e.) TT Peri. = 220.77390 +/- 0.00028 Node = 130.08052 +/- 0.00005 (2000.0) Inc. = 32.52982 +/- 0.00002 q = 3.2151084 +/- 0.0000022 AU e = 0.3136594 +/- 0.0000005 a = 4.6844208 +/- 0.0000047 AU n' = 0.09721208 +/- 0.00000015 P = 10.139 +/- 0.0000151 years T = 1980 Sept.25.59255 TT Epoch = 1980 Oct. 8.0 TT Peri. = 219.88723 e = 0.3137712 Node = 130.30549 (2000.0) a = 4.6636480 AU Inc. = 32.58343 n'= 0.09786230 q = 3.2003293 AU P = 10.071 years [ T = 1990 Oct. 15.68554 TT Epoch = 1990 Sept.26.0 TT Peri. = 219.93492 e = 0.3144755 Node = 130.19561 (2000.0) a = 4.6484481 AU Inc. = 32.61611 n'= 0.09834269 q = 3.1866252 AU P = 10.022 years ] T = 2000 Oct. 9.29376 TT Epoch = 2000 Oct. 23.0 TT Peri. = 220.07742 e = 0.3156056 Node = 130.18668 (2000.0) a = 4.6244513 AU Inc. = 32.65836 n'= 0.09910915 q = 3.1649484 AU P = 9.945 years The predicted orbit for the 2020 return is as follows: T = 2020 Sept.29.66542 TT Epoch = 2020 Sept.28.0 TT Peri. = 219.48156 e = 0.3200881 Node = 129.17460 (2000.0) a = 4.6137910 AU Inc. = 32.57241 n'= 0.09945284 q = 3.1369713 AU P = 9.910 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1980/ 101009 D96 0.3- 0.7+ 111030 204 0.1- 0.3+ 801005 260 1.3- 0.5+ 101009 D96 0.4+ 0.9- 111030 204 0.1+ 0.2+ 801005 260 1.2+ 0.9+ 101010 372 0.0 0.5- 111116 704 0.0 0.3+ 2001/ 101010 372 0.4- 0.7+ 111116 704 0.4- 1.0- 011023 608 0.3- 0.4+ 101010 372 0.6- 1.2+ 111116 704 0.5- 1.6- 011023 608 0.5+ 0.3+ 101011 D96 0.3- 0.0 111117 704 0.1- 0.2+ 011023 608 0.1+ 0.4- 101011 D96 0.4- 0.5+ 111117 704 0.4- 0.2- 011218 608 0.7+ 0.8- 101019 E10 0.1+ 0.2+ 111117 704 0.5+ 0.3+ 2010/ 101019 E10 0.1+ 0.5+ 111117 704 0.3+ 1.4+ 100911 E12 0.2- 0.4- 101020 E10 0.5+ 0.5+ 111117 704 0.1+ 0.2- 100911 E12 0.2- 0.5- 101020 E10 0.1- 0.6+ 111117 C32 1.0+ 0.3+ 100911 E12 0.4- 0.8- 101118 E10 0.4+ 0.5+ 111117 C32 0.4+ 0.3+ 100911 E12 0.8- 0.8- 101118 E10 0.1+ 0.4+ 111117 C32 0.3+ 0.3+ 101004 E12 0.0 0.2- 101120 D90 0.1+ 0.4- 111117 C32 0.9- 0.1+ 101004 E12 0.4- 0.4- 101120 D90 0.5+ 0.0 111128 703 0.8- 1.2- 101004 E12 0.3- 0.5- 2011/ 111128 703 0.4- 0.7- 101004 E12 0.5+ 0.5- 110921 F51 0.4+ 0.5+ 111128 703 1.0- 0.1- 101004 E12 0.1- 0.4- 110921 F51 0.0 0.3+ 111128 703 0.6- 0.6- 101004 E12 0.3+ 0.5- 110927 215 0.3- 0.6+ 111202 F51 0.2- 1.0+ 101005 E12 0.4+ 0.5- 110927 215 0.5- 0.1+ 111202 F51 0.2- 0.7+ 101005 E12 0.2+ 0.3- 110927 215 0.9- 0.4- 111206 F51 0.2- 0.8+ 101005 E12 0.0 0.5- 110928 H06 0.1+ 0.0 111206 F51 0.0 0.7+ 101005 E12 0.1+ 0.6- 110928 H06 0.3+ 0.0 111213 C32 0.4+ 0.1+ 101005 D96 0.8+ 0.7+ 110930 H06 0.3+ 0.1+ 111213 C32 0.5- 0.4+ 101005 D96 0.1- 0.4- 110930 H06 0.3+ 0.1- 111213 C32 0.3- 0.9+ 101005 D96 0.1+ 0.1- 110930 H06 0.2+ 0.0 111231 703 1.4+ 0.1- 101005 D96 0.3- 0.7+ 111020 693 0.0 1.1+ 111231 703 0.5+ 1.9- 101005 D96 0.1+ 0.4- 111020 693 0.2- 1.2+ 111231 703 1.0- 1.1- 101005 D96 0.2+ 0.4- 111020 693 0.0 1.2+ 111231 703 0.6+ 1.6- 101005 D96 0.2+ 0.3- 111020 693 0.2- 1.2+ 2012/ 101005 D96 0.7- 0.0 111021 693 0.1- 0.5+ 120125 215 1.2+ 0.8- 101005 D96 0.0 0.3- 111021 693 0.6- 0.9+ 120125 215 0.9+ 0.7- 101005 E12 0.1+ 0.4- 111021 693 0.3- 0.7+ 120125 215 0.3+ 0.4- 101005 D90 0.4- 0.2+ 111021 693 0.3- 0.6+ 120127 703 0.4+ 1.0- 101005 E12 0.3- 0.3- 111021 693 0.3- 0.6+ 120127 703 (0.2+ 2.0-) 101005 D90 0.1- 0.7- 111023 703 0.7- 1.1- 120127 703 1.0+ 1.6- 101005 D90 0.2+ 0.7+ 111023 703 0.4- 0.6- 120127 703 0.2+ 0.8- 101005 D90 0.1- 0.3+ 111023 703 0.7- 0.3- 101006 E10 0.7+ 0.4+ 111023 703 (2.4- 1.1-) ( ) -------- Rejected Obs.
Associate of the CBAT Late edition Syuichi Nakano 2017 July 9