Nakano Note (Nakano wa Kangaeru noda) NK 3598 350P/McNaught
The following improved orbital elements, by S. Nakano, are from 138 observations 2005 to 2018, including planetary perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas, Vesta, and non-gravitational effect of sublimating molecule = CO (or N2) using Yabushita's theory (MN 283, 347). The mean residual is +/- 0.68 arc second. The residuals on 2018 May observations show +11" for Right Ascension and -5" for Declination from a linked orbit in NK 3290 (= HICQ 2017, 2018). See the previous orbits in NK 1977, NK 2120 and 3290. Epoch = 2018 Feb. 11.0 TT T = 2018 Jan. 29.22439 +/- 0.03445 (m.e.) TT Peri. = 146.69735 +/- 0.00485 Node = 65.52114 +/- 0.00011 (2000.0) Inc. = 7.36314 +/- 0.00002 q = 3.7507905 +/- 0.0000041 AU e = 0.0905246 +/- 0.0000060 a = 4.1241253 +/- 0.0000067 AU n' = 0.11768099 +/- 0.00000029 P = 8.375 +/- 0.0000206 years Y1 = -0.753 +/- 0.404 Y2 = -0.14115 +/- 0.01281 [ T = 2001 June 22.10174 TT Epoch = 2001 June 20.0 TT Peri. = 149.26452 e = 0.0875724 Node = 65.74715 (2000.0) a = 4.1132282 AU Inc. = 7.35492 n'= 0.11814895 q = 3.7530228 AU P = 8.342 years ] T = 2009 Nov. 6.62972 TT Epoch = 2009 Nov. 25.0 TT Peri. = 150.38224 e = 0.0877960 Node = 65.66607 (2000.0) a = 4.1095352 AU Inc. = 7.35431 n'= 0.11830825 q = 3.7487344 AU P = 8.331 years The predicted orbit for the 2026 return is as follows: T = 2026 Mar. 17.91856 TT Epoch = 2026 Mar. 21.0 TT Peri. = 140.14339 e = 0.0950254 Node = 65.29758 (2000.0) a = 4.0822265 AU Inc. = 7.36524 n'= 0.11949739 q = 3.6943112 AU P = 8.248 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2005/ 100517 349 1.1- 1.6- 100611 G96 0.2+ 0.1- 051101 691 0.1- 0.6+ 100517 D96 0.5- 0.1- 100611 G96 0.4+ 0.5- 051101 691 0.9- 0.4+ 100517 D96 0.3- 0.1- 100611 H10 (3.1+ 0.0 ) 051101 691 0.2+ 0.7+ 100518 J75 0.4- 0.4- 100611 H10 (3.1+ 0.5-) 051101 G96 0.7+ 0.3+ 100518 J75 0.3- 0.2+ 100612 704 (0.6- 2.9+) 051101 G96 0.2+ 0.1+ 100518 J75 0.1- 0.4+ 100612 704 1.5- 1.1+ 051101 G96 0.1+ 0.1+ 100520 H10 0.6- 0.4+ 100612 704 (0.7- 3.5+) 051101 G96 0.0 0.0 100520 H10 0.4+ 0.1+ 100612 704 0.0 0.6+ 051204 G96 0.2- 0.1+ 100520 H10 0.1- 0.6- 100612 461 0.3- 0.7+ 051204 G96 0.3- 0.0 100520 H10 0.4- 0.2- 100612 461 1.2+ 0.3+ 051204 G96 0.1+ 0.1- 100520 941 0.5- 0.2+ 100618 G96 0.0 0.7+ 051204 G96 0.5- 0.5+ 100520 941 0.2- 0.1- 100618 G96 0.0 0.3+ 2009/ 100520 941 0.2- 0.2- 100618 G96 0.6+ 0.3+ 090228 G96 1.1- 1.2- 100521 E12 0.1+ 0.3- 100618 G96 0.2+ 0.7+ 090228 G96 0.5- 1.0- 100521 E12 0.1+ 0.2+ 100619 585 (3.4- 0.2-) 090228 G96 1.7- 0.8- 100522 H10 0.8+ 0.3- 100704 G96 0.3+ 0.5+ 090228 G96 1.0+ 0.5- 100522 H10 0.2+ 0.4- 100704 G96 0.2+ 0.4+ 090325 G96 0.8- 0.6- 100522 E12 0.5+ 0.2+ 100704 G96 0.9+ 0.5+ 090325 G96 1.7- 0.5- 100522 B33 0.0 0.9+ 100704 G96 0.3+ 0.6+ 090325 G96 0.4- 0.5- 100522 B33 0.9- 0.8- 2011/ 090325 G96 1.4- 0.7- 100522 B33 0.6- 0.7- 110608 H15 (4.1- 1.2-) 2010/ 100523 585 0.6+ 0.8+ 110608 H15 (4.6- 0.4-) 100512 E12 0.5+ 0.5- 100523 585 0.8+ 0.9+ 110826 E07 (3.7- 0.3+) 100512 E12 0.0 0.9+ 100523 204 0.2+ 0.2+ 110826 E07 2.1- 0.8+ 100512 E12 0.7- 0.1- 100524 204 0.4+ 0.2+ 2017/ 100512 E12 0.1- 0.4+ 100524 H06 1.2- 0.7+ 170126 291 0.3- 1.0+ 100512 E12 0.4- 0.3- 100524 H06 1.5- 0.5+ 170126 291 1.0- 0.6+ 100512 E12 0.3- 0.4- 100524 H06 2.1- 0.1+ 170126 291 0.4- 0.6+ 100512 E12 0.4- 0.3- 100601 H10 0.5+ 0.1+ 170129 291 0.5- 0.4+ 100513 E12 0.2- 0.3+ 100603 926 0.5+ 0.1+ 170129 291 1.1- 1.0+ 100513 E12 0.2+ 0.4- 100603 926 0.2- 0.4+ 170129 291 0.2+ 0.3+ 100514 E12 0.3- 0.3- 100603 926 0.4- 0.5+ 170304 F51 0.3+ 0.1+ 100514 E12 0.4- 0.0 100603 D96 (1.7- 2.9-) 170304 F51 0.1- 0.3+ 100514 D90 0.8+ 0.2+ 100603 D96 (4.9- 4.8-) 170304 F51 0.1+ 0.1- 100514 D90 0.3+ 0.4- 100603 213 0.0 0.1+ 170318 G96 0.6+ 0.5+ 100514 D90 0.3+ 0.2- 100604 213 0.1+ 0.6- 170318 G96 0.4- 0.7+ 100514 D96 0.5- 0.9+ 100604 213 0.2- 0.3- 170318 G96 0.9- 0.4+ 100514 D96 0.3+ 0.7+ 100604 367 0.3+ 0.4+ 170318 G96 0.6- 1.3+ 100514 D96 0.7- 0.2+ 100604 367 1.0+ 0.3- 170420 F51 0.2+ 0.0 100514 D90 0.0 0.3+ 100605 704 2.0+ 0.2+ 170420 F51 0.1- 0.2+ 100514 D90 0.1- 0.2+ 100605 704 1.4+ 0.3+ 170420 F51 0.5+ 0.3+ 100515 372 0.1- 0.6- 100605 704 1.1+ 0.8+ 170420 F51 0.4+ 0.0 100515 372 0.2+ 0.1+ 100605 704 0.4+ 0.6+ 2018/ 100515 372 0.3- 0.6- 100605 704 0.1+ 1.8+ 180512 D29 0.3- 0.5+ 100516 J24 1.5+ 0.3- 100605 046 2.0+ 1.6+ 180512 D29 0.4- 0.1- 100516 J24 2.1+ 0.2+ 100605 046 2.0+ 1.5+ 180512 D29 0.5- 0.6- 100516 J24 2.2+ 0.3+ 100605 046 0.4- 0.3+ 180519 F51 0.1- 0.3- 100516 J24 1.0+ 1.2+ 100605 046 0.1+ 0.4- 180519 F51 0.3- 0.4- 100517 H06 0.6+ 0.3+ 100606 585 1.3- 0.3- 180519 F51 0.0 0.4- 100517 H06 0.0 0.6+ 100606 585 0.2+ 1.2+ 180519 F51 0.2- 0.3- 100517 H06 0.6- 0.6+ 100611 G96 0.5+ 0.5- 100517 349 0.5- 1.1- 100611 G96 0.1+ 0.4- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2018 June 10