Nakano Note (Nakano wa Kangaeru noda) NK 5398 P/COIAS (2016 P5)
The following improved orbital elements, by S. Nakano, are from 58 observations 2004 to 2023. 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. The comet has passed 0.89 AU from Jupiter on 1988 Sept. 6 UT. See an orbit in CBET 5529 (same orbit). Epoch = 2023 May 16.0 TT T = 2023 May 29.75851 +/- 0.00415 (m.e.) TT Peri. = 34.67352 +/- 0.00044 Node = 185.40489 +/- 0.00024 (2000.0) Inc. = 7.03830 +/- 0.00003 q = 4.4332547 +/- 0.0000039 AU e = 0.0574054 +/- 0.0000008 a = 4.7032466 +/- 0.0000056 AU n' = 0.09662899 +/- 0.00000017 P = 10.200 +/- 0.0000183 years T = 2003 Jan. 13.48179 TT Epoch = 2003 Jan. 1.0 TT Peri. = 33.64168 e = 0.0584212 Node = 185.59958 (2000.0) a = 4.6691775 AU Inc. = 7.04556 n'= 0.09768851 q = 4.3963984 AU P = 10.089 years T = 2013 Mar. 2.08118 TT Epoch = 2013 Mar. 9.0 TT Peri. = 33.49216 e = 0.0578391 Node = 185.52965 (2000.0) a = 4.6982876 AU Inc. = 7.03701 n'= 0.09678202 q = 4.4265430 AU P = 10.184 years The predicted orbit for the 2033 return is as follows: T = 2033 Aug. 18.13313 TT Epoch = 2033 Aug. 31.0 TT Peri. = 36.30633 e = 0.0582049 Node = 185.31809 (2000.0) a = 4.6804058 AU Inc. = 7.04881 n'= 0.09733719 q = 4.4079831 AU P = 10.126 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2004/ 150908 F51 0.1+ 0.0 160801 T09 0.5+ 0.6+ 040623 950 0.4- 0.5+ 151009 F51 0.0 0.2- 160801 T09 0.7+ 0.3+ 040623 950 0.8- 0.3+ 151009 F51 0.3+ 0.1+ 160801 T09 0.2+ 0.7+ 2012/ 151009 F51 0.3+ 0.0 160801 T09 0.2+ 0.5+ 120722 T09 1.2+ 0.7- 151010 F51 0.0 0.1- 160801 T09 0.6+ 0.5+ 2013/ 151010 F51 0.4+ 0.2- 160809 T09 0.1+ 0.8+ 130728 X11 0.4+ 0.1- 151010 F51 0.1- 0.3- 160809 T09 0.4+ 0.3+ 2015/ 151010 F51 0.1+ 0.1- 160809 T09 0.4+ 0.8+ 150727 F51 0.2- 0.3+ 2016/ 160809 T09 0.6+ 0.4+ 150727 F51 0.2- 0.0 160703 T09 0.2+ 0.4+ 160809 T09 0.4+ 0.2- 150727 F51 0.1- 0.4+ 160703 T09 0.2+ 0.3+ 160830 T09 0.5+ 0.3+ 150727 F51 0.1+ 0.3- 160703 T09 0.0 0.2+ 160830 T09 0.2+ 0.2+ 150728 F51 0.0 0.5- 160703 T09 0.3+ 0.5+ 160830 T09 0.1+ 0.2+ 150728 F51 0.1+ 0.2+ 160707 T09 0.3+ 0.3+ 161030 F51 0.6- 0.1- 150728 F51 0.6- 0.0 160707 T09 0.3+ 0.3+ 161030 F51 0.7- 0.5+ 150805 F51 0.1- 0.5+ 160707 T09 0.3+ 0.4+ 161030 F51 0.8- 0.5- 150805 F51 0.1- 0.1+ 160707 F51 0.4+ 0.2- 161030 F51 0.1- 0.6- 150805 F51 0.1+ 0.3+ 160707 F51 0.4+ 0.1+ 2023/ 150805 F51 0.0 0.3+ 160707 F51 0.3+ 0.1+ 230417 W84 0.6- 0.4- 150908 F51 0.2+ 0.3- 160729 T09 0.5+ 0.4+ 230423 W84 0.6- 0.0 150908 F51 0.2+ 0.3- 160729 T09 0.8+ 0.7+ 150908 F51 0.1+ 0.2- 160729 T09 0.6+ 0.2+ ( ) -------- Rejected Obs.
Associate of the CBAT Late edition Syuichi Nakano 2025 Mar. 20