Nakano Note (Nakano wa Kangaeru noda) NK 2120 P/2010 J5 (McNaught)
The following improved orbital elements, by S. Nakano, are from 111 observations 2005 Nov. 1 to 2011 Aug. 26. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.57 arc second. See an orbit in NK 1977 (= HICQ 2011/2012). Epoch = 2009 Nov. 25.0 TT T = 2009 Nov. 6.59430 +/- 0.00308 (m.e.) TT Peri. = 150.37704 +/- 0.00044 Node = 65.66629 +/- 0.00009 (2000.0) Inc. = 7.35408 +/- 0.00004 q = 3.7487220 +/- 0.0000014 AU e = 0.0877899 +/- 0.0000007 a = 4.1094942 +/- 0.0000008 AU n' = 0.11831002 +/- 0.00000004 P = 8.331 +/- 0.0000025 years The predicted orbit for the 2018 return is as follows: T = 2018 Jan. 29.26041 TT Epoch = 2018 Feb. 11.0 TT Peri. = 146.68859 e = 0.0905229 Node = 65.52146 (2000.0) a = 4.1241974 AU Inc. = 7.36290 n'= 0.11767790 q = 3.7508631 AU P = 8.375 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2005/ 100516 J24 (2.2+ 0.3+) 100605 704 1.4+ 0.1+ 051101 691 0.1- 0.3+ 100516 J24 1.0+ 1.1+ 100605 704 1.1+ 0.6+ 051101 691 0.9- 0.1+ 100517 H06 0.6+ 0.3+ 100605 704 0.4+ 0.4+ 051101 691 0.2+ 0.4+ 100517 H06 0.0 0.5+ 100605 704 0.1+ 1.6+ 051101 G96 0.7+ 0.0 100517 H06 0.6- 0.6+ 100605 046 (2.0+ 1.5+) 051101 G96 0.2+ 0.2- 100517 349 0.5- 1.2- 100605 046 (2.0+ 1.3+) 051101 G96 0.1+ 0.2- 100517 349 1.1- 1.7- 100605 046 0.4- 0.2+ 051101 G96 0.0 0.3- 100517 D96 0.5- 0.2- 100605 046 0.1+ 0.6- 051204 G96 0.0 0.1- 100517 D96 0.4- 0.2- 100606 585 1.3- 0.5- 051204 G96 0.2- 0.2- 100518 J75 0.5- 0.5- 100606 585 0.2+ 1.1+ 051204 G96 0.3+ 0.3- 100518 J75 0.4- 0.1+ 100611 G96 0.5+ 0.7- 051204 G96 0.3- 0.3+ 100518 J75 0.1- 0.4+ 100611 G96 0.1+ 0.6- 2009/ 100520 H10 0.6- 0.3+ 100611 G96 0.3+ 0.3- 090228 G96 0.4- 0.6- 100520 H10 0.3+ 0.0 100611 G96 0.4+ 0.7- 090228 G96 0.2+ 0.4- 100520 H10 0.2- 0.7- 100611 H10 (3.1+ 0.1-) 090228 G96 1.0- 0.2- 100520 H10 0.4- 0.3- 100611 H10 (3.1+ 0.7-) 090228 G96 1.7+ 0.1+ 100520 941 0.6- 0.1+ 100612 704 (0.6- 2.7+) 090325 G96 0.0 0.0 100520 941 0.3- 0.2- 100612 704 1.5- 0.9+ 090325 G96 0.9- 0.0 100520 941 0.2- 0.2- 100612 704 (0.7- 3.3+) 090325 G96 0.4+ 0.0 100521 E12 0.1+ 0.3- 100612 704 0.0 0.4+ 090325 G96 0.6- 0.2- 100521 E12 0.1+ 0.1+ 100612 461 0.3- 0.5+ 2010/ 100522 H10 0.8+ 0.4- 100612 461 1.2+ 0.2+ 100512 E12 0.4+ 0.5- 100522 H10 0.2+ 0.5- 100618 G96 0.1+ 0.5+ 100512 E12 0.0 0.8+ 100522 E12 0.5+ 0.1+ 100618 G96 0.0 0.1+ 100512 E12 0.7- 0.2- 100522 B33 0.0 0.8+ 100618 G96 0.6+ 0.2+ 100512 E12 0.1- 0.4+ 100522 B33 0.9- 0.9- 100618 G96 0.2+ 0.5+ 100512 E12 0.4- 0.4- 100522 B33 0.6- 0.8- 100619 585 (3.4- 0.4-) 100512 E12 0.3- 0.4- 100523 585 0.6+ 0.7+ 100703 215 (9.7- 3.1+) 100512 E12 0.4- 0.4- 100523 585 0.8+ 0.8+ 100703 215 (9.3- 2.9+) 100513 E12 0.2- 0.2+ 100523 204 0.2+ 0.1+ 100703 215 (8.9- 3.1+) 100513 E12 0.2+ 0.5- 100524 204 0.4+ 0.1+ 100704 G96 0.3+ 0.3+ 100514 E12 0.3- 0.4- 100524 H06 1.2- 0.6+ 100704 G96 0.2+ 0.1+ 100514 E12 0.4- 0.1- 100524 H06 1.5- 0.4+ 100704 G96 1.0+ 0.3+ 100514 D90 0.8+ 0.1+ 100524 H06 (2.1- 0.0 ) 100704 G96 0.3+ 0.4+ 100514 D90 0.2+ 0.5- 100601 H10 0.5+ 0.0 100708 A77 (3.8- 4.3+) 100514 D90 0.2+ 0.3- 100603 926 0.5+ 0.0 100708 A77 (0.7- 4.4+) 100514 D96 0.5- 0.8+ 100603 926 0.2- 0.2+ 100708 215 (1.9- 4.1+) 100514 D96 0.3+ 0.7+ 100603 926 0.4- 0.4+ 100708 215 (1.6- 3.9+) 100514 D96 0.7- 0.1+ 100603 D96 (1.7- 3.1-) 100708 215 (1.5- 4.0+) 100514 D90 0.1- 0.3+ 100603 D96 (4.9- 5.0-) 2011/ 100514 D90 0.1- 0.1+ 100603 213 0.0 0.1- 110608 H15 0.4- 1.4- 100515 372 0.1- 0.7- 100604 213 0.1+ 0.8- 110608 H15 0.9- 0.6- 100515 372 0.2+ 0.0 100604 213 0.2- 0.4- 110826 E07 0.1+ 0.4- 100515 372 0.3- 0.7- 100604 367 0.3+ 0.3+ 110826 E07 1.7+ 0.1+ 100516 J24 1.5+ 0.4- 100604 367 1.0+ 0.4- 100516 J24 (2.1+ 0.1+) 100605 704 (2.0+ 0.0 ) ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2011 Sept. 11