Nakano Note (Nakano wa Kangaeru noda) NK 3319 P/2015 TO19 (Lemmon-PANSTARRS)

The following improved orbital elements, by T. Kobayashi, are from 54 observations 2015 Sept. 12 to 2016 Aug. 12. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.39 arc second. See the previous orbit in HICQ 2016. Epoch = 2016 Feb. 22.0 TT T = 2016 Mar. 6.99175 +/- 0.01331 (m.e.) TT Peri. = 89.28662 +/- 0.00301 Node = 321.64831 +/- 0.00057 (2000.0) Inc. = 6.49985 +/- 0.00004 q = 2.9254773 +/- 0.0000103 AU e = 0.3588266 +/- 0.0000141 a = 4.5626930 +/- 0.0001018 AU n' = 0.10112818 +/- 0.00000338 P = 9.746 +/- 0.0003261 years (+/- 0.12 day) The predicted orbit for the 2025 return is as follows: T = 2025 Nov. 23.58417 TT Epoch = 2025 Nov. 21.0 TT Peri. = 89.41039 e = 0.3597054 Node = 321.60814 (2000.0) a = 4.5468309 AU Inc. = 6.50513 n'= 0.10165784 q = 2.9113114 AU P = 9.695 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2015/ 151010 G45 0.2+ 0.3+ 151014 O75 0.2- 0.5- 150912 F51 0.0 0.2+ 151012 F51 0.1+ 0.4+ 151014 958 0.2+ 0.4+ 150912 F51 0.3- 0.4+ 151012 F51 0.0 0.5+ 151014 958 0.4+ 0.3- 150912 F51 0.1+ 0.5+ 151012 F51 0.2- 0.4+ 151014 958 0.3- 0.5- 150912 F51 0.1+ 0.3+ 151012 F51 0.1+ 0.3+ 151110 H06 0.3+ 0.8- 151003 G96 0.7+ 0.1+ 151013 F51 0.1- 0.4+ 151110 H06 0.0 0.9- 151003 G96 0.4+ 0.1- 151013 F51 0.0 0.3+ 151110 H06 0.3+ 0.8- 151003 G96 0.2+ 0.3+ 151013 F51 0.0 0.4+ 151111 215 0.2+ 0.3+ 151003 G96 0.3+ 0.1- 151013 F51 0.1- 0.4+ 151111 215 0.5+ 0.2- 151004 G96 0.1+ 0.0 151014 568 0.1+ 0.2+ 151111 215 0.7+ 0.6- 151004 G96 0.1+ 0.2- 151014 568 0.2+ 0.2+ 151212 J43 0.4+ 0.7- 151004 G96 0.2- 0.3- 151014 568 0.1+ 0.2+ 151212 J43 0.5+ 0.1+ 151004 G96 0.1- 0.7- 151014 291 0.1- 0.4+ 151212 J43 0.5- 0.1+ 151008 703 0.0 0.2- 151014 291 0.2+ 0.4+ 151212 J43 0.0 0.1- 151008 703 0.8- 0.2+ 151014 Q62 1.1- 0.5- 2016/ 151010 G45 1.4- 0.1+ 151014 Q62 0.8- 0.3- 160812 U69 0.4+ 0.5+ 151010 G45 0.1+ 0.0 151014 Q62 0.3- 0.0 160812 U69 0.1- 0.4+ 151010 G45 0.1- 0.1+ 151014 O75 0.0 0.4- 160812 U69 0.1- 0.3+ 151010 G45 0.0 0.4+ 151014 O75 0.0 0.5- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2017 Feb. 6

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