Nakano Note (Nakano wa Kangaeru noda) NK 2533 P/Gibbs (2012 F5)
The following improved orbital elements, by S. Nakano, are from 117 observations 2009 to 2013. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.71 arc second. The comet has passed the aphelion around the last Autumn. The residuals from the prediction in NK 2306 (= HICQ 2013) were -15" for 2013 Feb. and -29" for 2013 May observations. The delta-T correction for the prediction was +0.03 day. Epoch = 2015 June 27.0 TT T = 2015 June 16.42937 +/- 0.00266 (m.e.) TT Peri. = 178.16987 +/- 0.00043 Node = 216.83617 +/- 0.00008 (2000.0) Inc. = 9.73943 +/- 0.00002 q = 2.8802672 +/- 0.0000007 AU e = 0.0411427 +/- 0.0000001 a = 3.0038537 +/- 0.0000003 AU n' = 0.18931538 +/- 0.00000003 P = 5.206 +/- 0.0000008 years T = 2010 Mar. 24.30418 TT Epoch = 2010 Mar. 25.0 TT Peri. = 176.58730 e = 0.0424841 Node = 216.86337 (2000.0) a = 3.0029170 AU Inc. = 9.73891 n'= 0.18940398 q = 2.8753408 AU P = 5.204 years The predicted orbit for the 2020 return is as follows: T = 2020 Sept.29.60015 TT Epoch = 2020 Sept.28.0 TT Peri. = 183.74173 e = 0.0406949 Node = 216.77862 (2000.0) a = 3.0034310 AU Inc. = 9.73964 n'= 0.18935535 q = 2.8812068 AU P = 5.205 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2009/ 120323 H01 1.1+ 0.1- 120327 372 0.4- 0.4+ 090917 F51 0.1- 0.3+ 120323 H01 1.0+ 0.3- 120327 372 0.9- 0.7+ 090917 F51 0.3- 0.2+ 120323 H01 0.9+ 0.1- 120327 213 0.6- 0.1+ 090917 F51 0.1+ 0.3+ 120323 B90 1.1+ 0.3- 120327 213 1.1- 0.1+ 090917 F51 0.1- 0.3+ 120323 B90 (2.2+ 0.3-) 120328 C42 (3.9- 2.5+) 091211 F51 0.2+ 0.2+ 120323 J95 0.1+ 0.5+ 120328 C42 (2.5- 2.0+) 091211 F51 0.2- 0.5+ 120323 J95 0.2- 0.4+ 120328 C42 0.7+ 0.1- 091214 F51 0.1+ 0.3+ 120323 J95 1.2+ 0.0 120328 C42 0.6- 0.3+ 091214 F51 0.2- 0.1+ 120324 I47 0.4- 0.8- 120328 A13 1.1+ 0.8- 091214 F51 0.0 0.4+ 120324 I47 0.3- 0.2+ 120328 A13 (2.4- 0.2+) 091214 F51 0.2- 0.4+ 120324 H01 0.1+ 0.4+ 120328 A13 (5.6- 0.5+) 2010/ 120324 695 0.1+ 0.6+ 120328 511 0.6- 1.1+ 101204 F51 0.0 0.2- 120324 695 0.6+ 0.3- 120328 511 1.2- 0.5+ 101204 F51 0.0 0.1+ 120324 695 0.2+ 0.0 120328 511 0.9- 1.5+ 101204 F51 0.1- 0.2- 120324 H01 0.2+ 0.3+ 120328 511 0.1+ 1.1+ 101204 F51 0.0 0.1+ 120324 H01 0.1+ 0.3+ 120329 H06 0.2+ 0.1- 2012/ 120324 H01 0.7+ 0.2+ 120329 H06 0.2+ 0.2+ 120220 703 1.0+ 1.0- 120324 695 0.1+ 0.1- 120329 H06 0.3+ 0.4+ 120220 703 (6.0- 1.9+) 120324 695 0.2+ 0.2+ 120330 C42 (9.1- 3.3+) 120227 703 1.9- 0.8- 120324 695 0.3+ 0.2+ 120330 C42 (6.0- 4.0+) 120227 703 (2.5- 0.4+) 120324 E23 0.2+ 1.9+ 120330 C42 1.4- 0.0 120227 703 (2.8- 0.0 ) 120324 E23 (2.1- 3.5+) 120330 C42 (2.7+ 1.3-) 120227 703 0.3+ 0.4- 120325 C10 0.5- 0.8+ 120412 A71 1.5- 1.0+ 120228 F51 1.1+ 0.2- 120325 J95 1.2+ 0.6- 120412 A71 (2.5- 0.6-) 120303 703 0.7+ 0.1+ 120325 C10 0.6- 0.8+ 120414 J24 (2.1- 1.6+) 120303 703 0.2+ 1.1+ 120325 J95 (2.4+ 0.3-) 120414 J24 1.5- 1.6+ 120303 703 0.2- 0.3+ 120325 H36 1.6- 1.2+ 120415 J24 0.7- 0.3+ 120303 703 (0.6+ 2.1-) 120325 H36 (2.1- 1.4+) 120416 E07 1.0- 0.3+ 120314 703 1.5- 1.1+ 120325 H36 (2.4- 1.4+) 120416 E07 (2.7- 0.8+) 120314 703 0.6- 0.3+ 120325 H06 (2.0- 0.8+) 120416 C10 (4.6- 1.8+) 120314 703 1.6- 1.0+ 120325 H06 (4.0- 1.2+) 120416 C10 1.8- 1.0+ 120314 703 1.1+ 0.5+ 120325 C42 0.3+ 1.0- 120421 C32 (2.3- 1.6+) 120322 G96 0.5+ 0.1- 120325 C42 0.9- 0.8+ 120421 C32 1.9- 0.7+ 120322 G96 1.0+ 0.3- 120325 372 0.5- 0.3+ 120421 C32 1.6- 0.0 120322 G96 0.5+ 0.3- 120325 372 0.3+ 0.3- 120425 H06 0.3- 0.2- 120322 G96 0.9+ 0.2- 120325 372 0.4+ 0.3+ 120425 H06 0.2+ 0.3+ 120322 G96 0.3+ 0.0 120325 372 0.2+ 0.2- 120610 E07 0.4- 0.4- 120322 G96 1.0+ 0.3- 120325 B90 (2.9- 1.1+) 120610 E07 0.4- 0.6- 120322 G96 0.8+ 0.3- 120325 B90 1.2- 0.6- 120613 E07 1.5- 0.1- 120322 G96 0.6+ 0.0 120325 C10 0.2- 0.7+ 120613 E07 1.0- 0.1+ 120322 033 0.3- 1.4+ 120326 C10 0.1+ 1.1- 120707 E07 0.5- 0.0 120322 033 1.0+ 0.5- 120326 215 (2.1- 0.4-) 120707 E07 (2.1- 0.2+) 120322 033 (3.0- 1.5+) 120326 215 (2.1- 0.2-) 2013/ 120322 033 1.6- 0.9+ 120326 215 (2.0- 0.6+) 130215 568 0.1+ 0.1+ 120323 204 0.8- 0.8+ 120326 511 (2.1- 1.4+) 130215 568 0.0 0.3+ 120323 204 0.7- 0.5+ 120326 213 1.8- 0.5- 130215 568 0.0 0.2+ 120323 I48 (0.8- 2.0+) 120326 C10 0.2- 0.6+ 130512 568 0.0 0.0 120323 I48 0.9- 1.5+ 120326 511 1.3- 0.7+ 130512 568 0.1+ 0.0 120323 H06 (3.2- 3.6+) 120326 C10 0.9- 0.7+ 130512 568 0.1- 0.1+ 120323 H06 (2.2- 2.9+) 120326 C10 1.2+ 0.2- 130512 568 0.0 0.0 120323 I48 0.9- 0.1+ 120327 372 0.6- 0.0 120323 H01 1.1+ 0.0 120327 372 0.8- 0.7+ ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2013 June 16