Nakano Note (Nakano wa Kangaeru noda) NK 2210 P/LINEAR (2003 HT15 = 2012 B2)
The following improved orbital elements, by S. Nakano, are from 57 observations 2003 to 2012. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.68 arc second. The delta-T correction for NK 1921 (= HICQ 2011/2012) was +0.22 day with RunOff values of -136" for R. A. and -37" for Decl.. See the previous orbits in YC 2400, NK 1110 and NK 1921. Epoch = 2013 Mar. 9.0 TT T = 2013 Mar. 17.31078 +/- 0.02154 (m.e.) TT Peri. = 124.10752 +/- 0.00296 Node = 81.44690 +/- 0.00022 (2000.0) Inc. = 27.63650 +/- 0.00010 q = 2.6898961 +/- 0.0000084 AU e = 0.4187871 +/- 0.0000013 a = 4.6280739 +/- 0.0000038 AU n' = 0.09899281 +/- 0.00000012 P = 9.956 +/- 0.0000123 years T = 2003 Apr. 17.72606 TT Epoch = 2003 May 1.0 TT Peri. = 124.05127 e = 0.4198848 Node = 81.47250 (2000.0) a = 4.6050988 AU Inc. = 27.67023 n'= 0.09973455 q = 2.6714879 AU P = 9.882 years The predicted orbit for the 2023 return is as follows: T = 2023 Mar. 12.08430 TT Epoch = 2023 Feb. 25.0 TT Peri. = 124.17967 e = 0.4179879 Node = 81.33131 (2000.0) a = 4.6395870 AU Inc. = 27.61889 n'= 0.09862456 q = 2.7002959 AU P = 9.994 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2003/ 030427 704 0.1+ 0.3+ 030702 H41 1.3+ 0.3- 030127 704 (1.4+ 2.5+) 030427 704 0.4+ 0.8+ 030702 H41 1.5- 0.9- 030127 704 0.8+ 0.7- 030428 704 0.1+ 0.3- 030704 704 0.1+ 0.2+ 030127 704 0.5+ 1.2+ 030428 704 0.1- 0.5+ 030704 704 1.0+ 1.1- 030127 704 0.3- 0.5- 030428 704 0.1+ 0.1- 030704 704 0.7+ 0.3- 030208 608 0.2+ 0.3- 030428 704 0.1- 0.2- 030704 704 1.3- 1.0+ 030208 608 0.3+ 0.6- 030428 704 0.6- 1.1- 030704 H41 (1.7+ 2.5+) 030208 608 0.1- 1.5- 030429 704 0.3+ 0.0 030704 H41 (0.2+ 3.4+) 030424 704 0.5+ 0.1+ 030429 704 0.6+ 0.1+ 030710 204 1.4+ 0.6- 030424 704 0.0 0.5+ 030429 704 0.1+ 0.5+ 030710 204 1.1- 0.2- 030424 704 0.0 0.7- 030429 704 0.4+ 0.1- 030710 204 (1.6- 3.5+) 030424 704 0.4- 1.0+ 030429 704 0.3- 0.3- 2012/ 030424 704 1.1- 0.4+ 030502 608 0.0 0.5- 120126 372 0.6+ 1.1- 030426 704 0.5+ 0.5+ 030502 608 0.4- 0.6- 120126 372 0.4- 0.1+ 030426 704 0.6- 0.4+ 030515 608 0.7+ 0.0 120126 372 1.0- 0.6- 030426 704 0.2+ 0.1+ 030515 608 0.7- 0.7+ 120127 372 1.0- 0.9+ 030426 704 0.9- 0.4- 030515 608 0.7+ 0.5- 120127 372 0.5- 0.1- 030426 704 0.7- 0.3- 030601 A35 0.2- 0.5- 120127 372 0.1- 0.9- 030427 704 0.6- 0.3+ 030601 A35 0.3+ 0.4+ 120129 H06 0.2+ 0.8+ 030427 704 0.8+ 0.6+ 030627 J95 1.9+ 0.4+ 120129 H06 0.7+ 0.6+ 030427 704 1.0- 0.7+ 030627 J95 1.0- 0.9+ 120129 H06 1.5+ 0.6+ ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2012 Feb. 8