Nakano Note (Nakano wa Kangaeru noda) NK 2611 P/2011 U2 (Bressi)
The following improved orbital elements, by S. Nakano, are from 133 observations 2011 Oct. 24 to 2014 Jan. 10. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.50 arc second. Recent residuals from an orbit in NK 2387 (= HICQ 2013) are up to 5". See the previous orbits in NK 2206, NK 2254 and NK 2387. Epoch = 2012 Apr. 23.0 TT T = 2012 May 7.89810 +/- 0.02738 (m.e.) TT Peri. = 157.77120 +/- 0.00263 Node = 266.69299 +/- 0.00011 (2000.0) Inc. = 9.63009 +/- 0.00003 q = 4.8373744 +/- 0.0000182 AU e = 0.1109368 +/- 0.0000099 a = 5.4409794 +/- 0.0000119 AU n' = 0.07765840 +/- 0.00000025 P = 12.692 +/- 0.0000420 years The predicted orbit for the 2023 return is as follows: T = 2023 Nov. 4.35359 TT Epoch = 2023 Oct. 23.0 TT Peri. = 169.40294 e = 0.1276296 Node = 260.02923 (2000.0) a = 4.7362897 AU Inc. = 9.79228 n'= 0.09561955 q = 4.1317989 AU P = 10.308 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2011/ 111031 H06 0.0 0.4+ 111124 H06 0.1- 0.3- 111024 691 0.6- 0.0 111031 H06 0.2- 0.3+ 111124 H06 0.1+ 0.3- 111024 691 1.8- 0.2- 111031 H06 0.6- 0.1+ 111126 349 0.1- 0.7- 111024 691 0.8- 0.0 111031 D29 0.1+ 0.2+ 111126 349 0.4+ 1.2- 111024 291 0.2+ 0.3+ 111031 D29 0.4- 0.3+ 111224 349 0.2+ 0.3- 111024 291 0.4+ 0.2+ 111031 D29 0.1- 0.2- 111224 349 0.6+ 0.4+ 111024 291 0.2+ 0.5+ 111101 H06 0.4- 0.5+ 111229 J01 0.1- 0.7- 111024 B18 0.8+ 0.4+ 111101 H06 0.6- 0.2+ 111229 J01 0.8- 0.2- 111024 B18 0.3+ 0.7+ 111101 H06 0.3- 0.5+ 111229 J01 0.2- 0.2+ 111024 B18 0.1+ 0.2+ 111102 H06 0.1- 0.2+ 2012/ 111025 291 0.3+ 0.3+ 111102 H06 0.1- 0.1+ 120116 204 0.3- 0.2- 111025 291 0.5+ 0.4+ 111104 291 0.1+ 0.3+ 120116 204 0.4- 0.1- 111025 291 0.4+ 0.2+ 111104 291 0.2- 0.5+ 120316 G96 1.4- 0.4+ 111025 F65 0.8+ 0.3+ 111104 291 0.1- 0.0 120316 G96 1.1- 0.2- 111025 F65 1.0+ 0.7+ 111115 F51 0.5+ 0.0 120316 G96 0.2+ 0.0 111025 D90 0.6- 0.4- 111115 703 0.1+ 0.3- 120316 G96 0.5- 0.2+ 111025 D90 0.8- 0.4- 111115 703 0.6- 1.0- 2013/ 111025 D90 0.1- 0.2+ 111115 703 1.8- 0.4- 130104 G96 0.1+ 0.1- 111025 B18 0.8- 0.1- 111115 F51 0.5+ 0.0 130104 G96 0.7- 0.1+ 111025 B18 0.6- 0.3- 111115 703 1.3- 0.5- 130104 G96 0.5- 0.1- 111025 B18 0.1- 0.0 111117 291 0.5+ 0.6+ 130104 G96 1.5- 0.9- 111026 291 0.3+ 0.3+ 111117 291 0.4+ 0.1+ 130104 G96 0.8- 1.0- 111026 291 0.5+ 0.2+ 111117 291 0.2+ 0.3+ 130119 G96 0.4- 0.5+ 111026 291 0.6+ 0.4+ 111117 704 0.6- 0.4+ 130119 G96 0.1- 0.1+ 111026 H06 0.2+ 0.0 111117 704 0.1- 0.1- 130119 G96 0.7- 0.4+ 111026 H06 0.3+ 0.0 111117 704 1.9- 0.9+ 130119 G96 0.2- 0.2- 111026 H06 0.5+ 0.1- 111118 157 0.1- 0.0 130409 F51 0.3+ 0.1- 111027 B82 0.7+ 0.6+ 111118 157 0.3+ 0.2- 130409 F51 0.0 0.1- 111027 B82 0.1+ 0.1- 111118 C32 0.0 0.4+ 130409 F51 0.4+ 0.1+ 111027 B82 0.1+ 0.6+ 111118 C32 0.0 0.5+ 131224 291 0.4+ 0.0 111027 C32 0.3- 0.3- 111118 C32 0.2- 0.2+ 131224 291 0.9+ 0.2- 111027 C32 0.4+ 0.2- 111118 C32 0.2- 0.2+ 131224 291 0.9+ 0.1- 111027 C32 0.2+ 0.1- 111121 215 0.0 0.3- 131227 G96 0.8- 0.6+ 111027 C32 0.3+ 0.2- 111121 215 0.2- 0.3- 131227 G96 0.4- 0.2+ 111028 J01 0.4+ 0.4- 111121 215 0.3- 0.5- 131227 G96 0.6- 0.5+ 111028 J01 0.0 0.2- 111121 130 1.0- 0.3- 131227 G96 0.0 0.2+ 111028 J01 0.2- 0.3- 111121 130 0.1- 0.5- 2014/ 111029 204 0.3+ 0.1- 111121 130 0.3- 0.0 140104 J43 0.0 0.1+ 111029 204 0.5+ 0.0 111122 372 0.3+ 0.4+ 140104 J43 0.0 0.2+ 111029 H06 0.1- 0.0 111122 372 0.6- 0.5- 140104 J43 0.1+ 0.2- 111029 H06 0.2+ 0.3+ 111122 372 0.5- 0.7- 140104 J43 0.3+ 0.0 111029 H06 0.4+ 0.2+ 111122 372 0.1+ 0.5+ 140110 G96 0.4+ 0.4- 111029 157 0.2- 0.1+ 111123 703 0.4- 0.5+ 140110 G96 0.0 0.1+ 111029 157 0.2- 0.3- 111123 703 (2.2- 0.8+) 140110 G96 0.6- 0.1- 111030 D29 1.6+ 0.3- 111123 703 1.7- 0.5+ 140110 G96 0.7- 0.1+ 111030 D29 0.9+ 0.7- 111123 703 (0.6- 2.1+) 111030 D29 0.4- 1.1- 111124 H06 0.2- 0.2- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2014 Jan. 17