Nakano Note (Nakano wa Kangaeru noda) NK 2404 P/2012 Q1 (Kowalski)
The following improved orbital elements, by S. Nakano, are from 135 observations 2011 Apr. 13 to 2013 Jan. 6. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.59 arc second. See the previous orbit in NK 2377. Epoch = 2012 Feb. 3.0 TT T = 2012 Feb. 9.05202 +/- 0.13682 (m.e.) TT Peri. = 139.21636 +/- 0.00588 Node = 184.44933 +/- 0.00017 (2000.0) Inc. = 45.16939 +/- 0.00020 q = 9.4821525 +/- 0.0000884 AU e = 0.6383374 +/- 0.0000356 a = 26.2182282 +/- 0.0000992 AU n' = 0.00734174 +/- 0.00000004 P = 134.247 +/- 0.0007630 years (+/- 0.28 day) The predicted orbit for the 2145 return is as follows: T = 2145 Mar. 22.70465 TT Epoch = 2145 Apr. 6.0 TT Peri. = 139.14993 e = 0.6348351 Node = 184.38878 (2000.0) a = 25.9879583 AU Inc. = 45.19394 n'= 0.00743954 q = 9.4898899 AU P = 132.482 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2011/ 120911 H06 0.7+ 0.1+ 121002 958 (2.8- 4.6-) 110413 G96 0.1- 0.0 120911 H06 0.3+ 0.1- 121006 157 0.5+ 0.5- 110413 G96 0.0 0.2- 120911 H06 0.4+ 0.0 121006 157 1.2+ 0.9- 110413 G96 0.3- 0.4+ 120911 900 0.7+ 0.6+ 121008 H06 1.5+ 0.3+ 110413 G96 0.4+ 0.0 120911 900 (3.1+ 3.4+) 121008 H06 0.7+ 0.2+ 2012/ 120911 372 0.3- 0.4+ 121009 372 0.1+ 0.1+ 120828 G96 0.8- 0.4- 120911 372 0.6- 0.2+ 121009 372 0.1+ 0.4+ 120828 G96 0.3- 0.4- 120913 J24 0.2+ 0.1+ 121009 372 0.6+ 0.4+ 120828 G96 0.3+ 0.2- 120913 J24 0.7- 0.1+ 121010 B96 0.7- 1.2+ 120828 G96 0.2- 0.3- 120913 J24 1.0- 0.4+ 121010 B96 1.5- 0.6- 120828 G96 0.3- 0.4- 120913 J24 0.2- 0.5+ 121012 372 0.4+ 0.6+ 120828 G96 0.1- 0.3+ 120913 D90 0.0 0.1- 121012 372 0.6+ 0.6+ 120828 G96 0.1+ 0.2- 120913 D90 0.4+ 0.0 121012 372 0.9+ 0.3- 120828 G96 0.2- 0.5- 120914 130 1.5+ 0.9+ 121019 A32 0.5- 0.8- 120830 J95 0.5+ 0.1- 120914 130 0.2+ 0.4+ 121019 A32 0.7- 0.6- 120830 J95 0.6- 0.5+ 120914 130 1.0- 0.2- 121020 349 0.0 0.3- 120831 H21 0.6- 0.9- 120914 J01 (2.2- 4.1-) 121020 349 0.5- 0.3+ 120831 H21 0.2- 0.1+ 120914 J01 (0.5- 3.0-) 121020 C32 0.0 0.3- 120831 H21 0.4- 0.0 120914 J01 0.1+ 1.4- 121020 C32 0.4+ 0.1+ 120902 J95 1.0+ 0.8+ 120915 B96 (1.1- 9.0-) 121020 C32 0.7+ 0.1- 120902 J95 0.2+ 0.2+ 120915 B96 (0.6- 8.2-) 121020 246 (1.2+ 2.2+) 120903 G96 0.0 0.3+ 120915 B96 (0.6+ 6.6-) 121020 246 0.5+ 0.2+ 120903 G96 0.2- 0.1- 120915 B96 (0.5- 6.9-) 121020 246 1.1- 0.8+ 120903 G96 0.4- 0.7+ 120915 B96 (0.5+ 6.8-) 121021 D90 0.3- 0.1- 120903 G96 0.1- 0.0 120915 C10 0.7+ 0.1+ 121021 D90 0.3- 0.0 120903 G96 0.2- 0.8+ 120915 C10 0.1- 0.3- 121021 D90 0.7- 0.0 120903 G96 0.5- 0.4+ 120915 C23 (1.1+ 6.5-) 121030 958 (6.4+ 1.8+) 120903 G96 0.4+ 0.3- 120915 C10 0.0 0.2- 121030 958 (6.4+ 4.2+) 120903 G96 0.7+ 0.3- 120915 C23 (3.9- 4.9-) 121030 958 (6.9+ 2.7+) 120904 H21 0.3- 0.0 120917 511 0.3+ 0.5+ 121102 511 1.1- 0.3+ 120904 H21 0.5+ 0.8- 120917 511 0.2+ 0.2+ 121102 511 0.3- 0.3+ 120904 H21 0.4+ 0.3+ 120917 511 0.2- 0.6+ 121105 C32 0.6+ 0.6+ 120904 E10 0.0 0.3+ 120918 B96 (2.3- 1.1-) 121105 C32 0.1- 0.3+ 120904 E10 0.0 0.1- 120918 B96 0.6- 0.9- 121105 C32 0.0 0.1+ 120904 E10 0.2- 0.5+ 120918 B96 (4.1- 0.4-) 121105 C32 0.1- 0.4+ 120907 J95 0.0 0.2- 120918 B96 (3.0- 2.1-) 121106 C10 0.1- 0.5+ 120907 J95 0.1+ 0.1- 120918 J84 0.7+ 0.7- 121106 C10 0.4+ 0.2+ 120907 J95 0.1- 0.1- 120918 J84 1.6+ 0.3- 121112 349 1.8- 0.6- 120908 B96 0.9- 0.5+ 120919 958 0.4+ 1.3- 121112 349 1.5- 0.1+ 120908 B96 (2.5+ 1.3+) 120919 958 0.2+ 0.8- 121112 C32 0.0 0.6+ 120908 B96 0.2- 1.2+ 120919 958 0.3+ 1.9- 121112 C32 0.1+ 0.1- 120908 A71 0.9- 1.1+ 120920 958 1.2- 0.1- 121112 C32 0.0 0.2+ 120908 A71 0.1+ 0.4+ 120920 958 1.9- 1.9- 121115 511 0.5- 0.2- 120908 215 0.3+ 0.4- 120920 958 0.6+ 1.7- 121115 511 0.1- 0.4+ 120908 215 0.1+ 0.3- 120922 511 0.0 0.3+ 121116 C10 0.5+ 0.6- 120908 215 0.1+ 0.3- 120922 511 0.0 0.5+ 121116 C10 0.0 0.2- 120909 C23 0.8+ 0.5+ 120922 511 0.1+ 0.4+ 121212 G96 0.0 0.1+ 120909 C23 0.8+ 1.8+ 120922 958 (0.5- 2.7-) 121212 G96 0.9+ 0.6- 120909 246 0.1- 0.2+ 120922 958 1.7- 1.2- 121212 G96 0.6+ 0.1- 120909 246 0.1+ 0.4+ 120922 958 (3.1- 4.0-) 121212 G96 0.3+ 0.5- 120909 246 0.2+ 0.2+ 120923 958 (1.9- 2.2-) 2013/ 120909 246 0.3+ 0.8- 120923 958 (2.5- 1.7-) 130106 H06 0.2- 0.4+ 120910 J01 0.3- 0.5- 120923 958 0.2- 0.5- 130106 H06 0.1+ 0.2+ 120910 J01 (2.1+ 0.2+) 121002 958 (1.0+ 7.1-) 130106 H06 0.9+ 0.4+ 120911 H06 0.9+ 0.2+ 121002 958 (0.8- 4.2-) ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2013 Feb. 3