Nakano Note (Nakano wa Kangaeru noda) NK 5186 P/Lemmon-PANSTARRS (2012 WA34 = 2024 Cx)
The following improved orbital elements, by S. Nakano, are from 37 observations 2011 to 2024. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.43 arc second. Residual were +145" for Right Ascension and -30" for Declination from the prediction in NK 2406 (= CH 2023) with the delta-T correction = -0.16 day. Recovery by E. Schwab and colleagues. Epoch = 2023 June 25.0 TT T = 2023 July 8.65898 +/- 0.01031 (m.e.) TT Peri. = 356.64033 +/- 0.00148 Node = 93.55608 +/- 0.00010 (2000.0) Inc. = 6.08283 +/- 0.00002 q = 3.0713921 +/- 0.0000197 AU e = 0.3434201 +/- 0.0000050 a = 4.6778647 +/- 0.0000465 AU n' = 0.09741651 +/- 0.00000145 P = 10.117 +/- 0.0001508 years (+/- 0.06 day) T = 2013 Jan. 24.75796 TT Epoch = 2013 Jan. 28.0 TT Peri. = 353.16186 e = 0.3396673 Node = 94.52355 (2000.0) a = 4.8057343 AU Inc. = 6.11883 n'= 0.09355445 q = 3.1733837 AU P = 10.535 years The predicted orbit for the 2033 return is as follows: T = 2033 Aug. 30.73552 TT Epoch = 2033 Aug. 31.0 TT Peri. = 356.69111 e = 0.3426217 Node = 93.56255 (2000.0) a = 4.7004346 AU Inc. = 6.07571 n'= 0.09671572 q = 3.0899636 AU P = 10.191 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2011/ 121203 G96 1.1- 0.1- 130116 H06 0.8- 0.4+ 110926 F51 0.0 0.1+ 121203 G96 1.4- 0.6- 130118 G96 1.4+ 0.4+ 110926 F51 0.1+ 0.1+ 121203 G96 0.2- 0.4+ 130118 G96 0.9+ 0.1- 110926 F51 0.1- 0.1- 2013/ 130118 G96 0.4+ 0.7+ 2012/ 130107 F51 0.4+ 0.2+ 130118 G96 0.1+ 0.2- 121107 F51 0.2- 0.0 130107 F51 0.4+ 0.1+ 2024/ 121107 F51 0.5- 0.3- 130107 F51 0.2- 0.1+ 240212 J04 0.1+ 0.7+ 121125 F51 0.2- 0.1+ 130108 568 0.1+ 0.1- 240212 J04 0.4+ 0.1+ 121125 F51 0.1- 0.1+ 130108 568 0.1+ 0.0 240212 J04 0.7+ 0.1- 121126 G96 0.2+ 0.0 130108 568 0.1+ 0.1- 240212 J04 0.4+ 0.1- 121126 G96 0.5- 0.3+ 130109 568 0.0 0.0 240214 J04 0.4- 0.1- 121126 G96 0.2+ 0.2- 130109 568 0.3+ 0.1- 240214 J04 0.8- 0.2+ 121126 G96 0.5- 0.0 130109 568 0.0 0.1- 240214 J04 0.5- 1.0- 121203 G96 0.4- 0.2+ 130116 H06 0.0 0.8+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2024 Feb. 15