Nakano Note (Nakano wa Kangaeru noda) NK 2825 P/2013 W2 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 105 observations 2013 Nov. 27 to 2015 Feb. 20. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.60 arc second. 2015 February Observations show the large residuals of +440" and -90" from an orbit in HICQ 2014. Epoch = 2015 Jan. 18.0 TT T = 2015 Jan. 5.31747 +/- 0.02064 (m.e.) TT Peri. = 307.19851 +/- 0.00285 Node = 179.85030 +/- 0.00030 (2000.0) Inc. = 4.56657 +/- 0.00001 q = 4.4443982 +/- 0.0000377 AU e = 0.5746392 +/- 0.0000150 a = 10.4485375 +/- 0.0000365 AU n' = 0.02918239 +/- 0.00000015 P = 33.774 +/- 0.0001774 years (+/- 0.06 day) The predicted orbit for the 2044 return is as follows: T = 2044 Oct. 1.50728 TT Epoch = 2044 Sept.22.0 TT Peri. = 304.09870 e = 0.5462725 Node = 178.23502 (2000.0) a = 9.5939147 AU Inc. = 4.85612 n'= 0.03316731 q = 4.3530225 AU P = 29.716 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2013/ 131228 349 0.4- 0.5+ 150124 F51 0.4+ 0.1- 131127 F51 0.1+ 0.1- 131229 372 1.2- 0.4+ 150124 F51 0.4+ 0.1- 131127 F51 0.0 0.1- 131229 372 1.6- 0.5+ 150124 F51 0.4+ 0.1- 131127 F51 0.1+ 0.1- 131229 372 1.2- 1.1+ 150124 F51 0.4+ 0.1- 131129 H01 0.1+ 0.0 2014/ 150125 G45 0.6- 0.1+ 131129 H01 0.1+ 0.1- 140109 G96 0.3- 0.1+ 150125 G45 0.6- 0.5+ 131129 H01 0.1+ 0.0 140109 G96 0.5- 0.2+ 150125 G45 0.4- 0.3+ 131129 H06 0.4- 0.7+ 140109 G96 0.6- 0.0 150125 G45 0.6- 0.2+ 131129 H06 0.4- 0.7+ 140109 G96 0.1+ 0.1+ 150125 G45 0.7- 0.3+ 131129 H06 0.6- 0.1+ 140223 215 0.1+ 0.9- 150125 G45 0.7- 0.2+ 131130 568 0.2+ 0.0 140223 215 0.2+ 0.7- 150208 D29 1.0- 0.1- 131130 568 0.2+ 0.1- 140223 215 0.2+ 0.8- 150208 D29 1.0- 0.2+ 131130 568 0.2+ 0.1- 141024 703 0.8+ 1.3- 150208 D29 0.9- 0.1+ 131130 568 0.2+ 0.1- 141024 703 0.3+ 0.2- 150209 G96 1.7- 0.4+ 131130 568 0.2+ 0.1- 141024 703 1.6- 0.2- 150209 G96 (2.2- 0.6+) 131130 568 0.2+ 0.1- 141024 703 (3.8- 1.2+) 150209 G96 (2.4- 0.7+) 131201 595 0.1+ 0.4+ 2015/ 150209 G96 1.3- 0.4+ 131201 595 0.3- 0.5+ 150117 G45 0.9- 0.1+ 150209 D29 (2.3- 0.5+) 131201 H21 0.1- 0.3+ 150117 G45 1.2- 0.0 150209 D29 1.3- 0.0 131201 H21 0.0 0.4+ 150117 G45 0.7- 0.4+ 150209 D29 1.4- 0.2+ 131201 H21 0.5+ 0.2+ 150117 G45 0.6- 0.2- 150209 D29 1.3- 0.2+ 131203 291 0.1- 0.2+ 150118 691 (2.3- 0.6+) 150209 D29 1.1- 0.3+ 131203 291 0.2- 0.4+ 150118 691 (2.1- 0.6+) 150209 D29 (2.1- 0.2+) 131203 958 0.1- 0.2- 150118 691 1.5- 0.5+ 150212 D29 1.3- 0.2- 131203 958 0.1+ 0.3- 150119 G45 0.8- 0.0 150212 D29 1.6- 0.1- 131203 958 0.2- 0.4+ 150119 G45 0.6- 0.4+ 150212 D29 1.8- 0.8- 131208 372 0.9- 0.2+ 150119 G45 0.7- 0.2+ 150217 D29 (2.5- 0.2-) 131208 372 0.8- 0.2+ 150119 G45 0.2- 0.1+ 150217 D29 1.2- 0.4+ 131208 C10 0.3- 0.1+ 150119 G45 0.6- 0.1+ 150217 D29 0.6- 0.0 131208 C10 0.3- 0.5- 150120 G45 0.5- 0.2+ 150218 F51 0.3+ 0.1- 131209 C10 0.2+ 0.1+ 150120 G45 0.4- 0.1+ 150218 F51 0.2+ 0.1+ 131223 215 (2.5- 0.2+) 150120 G45 0.5- 0.2+ 150218 F51 0.3+ 0.1- 131223 215 (2.9- 0.8+) 150120 G45 0.0 0.2+ 150219 F51 0.4+ 0.0 131225 G96 0.2- 0.3- 150122 691 1.0- 0.2- 150219 F51 0.4+ 0.1- 131225 G96 0.6- 0.2+ 150122 691 1.2- 0.4+ 150219 F51 0.4+ 0.0 131225 G96 0.3- 0.1- 150122 691 1.3- 0.6+ 150220 D95 0.4- 0.9- 131225 G96 0.6- 0.1+ 150124 G45 0.7- 0.3+ 150220 D95 0.2- 0.6+ 131227 372 0.8- 0.0 150124 G45 0.2- 0.1+ 150220 D95 0.3- 0.2+ 131227 372 0.2- 0.1+ 150124 G45 0.2- 0.0 131228 349 1.9- 1.8+ 150124 G45 0.3- 0.1+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2015 Mar. 16