Nakano Note (Nakano wa Kangaeru noda) NK 2667 P/2012 F2 (PANSTARRS)

The following improved orbital elements, by S. Nakano, are from 97 observations 2012 Mar. 16 to 2013 Aug. 9. 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. See the previous orbits in NK 2417 and NK 2454 (= HICQ 2013). Epoch = 2013 Apr. 18.0 TT T = 2013 Apr. 9.98243 +/- 0.00155 (m.e.) TT Peri. = 33.18514 +/- 0.00032 Node = 227.13454 +/- 0.00006 (2000.0) Inc. = 14.72432 +/- 0.00002 q = 2.8970914 +/- 0.0000053 AU e = 0.5422219 +/- 0.0000060 a = 6.3285940 +/- 0.0000133 AU n' = 0.06190749 +/- 0.00000020 P = 15.921 +/- 0.0000502 years The predicted orbit for the 2029 return is as follows: T = 2029 Mar. 17.45944 TT Epoch = 2029 Mar. 5.0 TT Peri. = 35.34065 e = 0.5408777 Node = 225.34061 (2000.0) a = 6.2913145 AU Inc. = 14.83493 n'= 0.06245856 q = 2.8884831 AU P = 15.780 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2012/ 120517 215 0.1- 0.5- 130801 A71 0.1- 0.0 120316 F51 0.1+ 0.0 120706 E07 0.1+ 0.4- 130801 A71 0.4- 0.4+ 120316 F51 0.0 0.1+ 120706 E07 0.3+ 0.8- 130801 A71 0.2- 0.0 120316 F51 0.1+ 0.0 2013/ 130801 A71 0.6- 0.3- 120316 F51 0.1+ 0.1- 130210 H06 0.3- 0.3+ 130801 A71 0.3- 0.0 120317 291 0.1+ 0.1- 130210 H06 0.3- 0.1+ 130801 A71 1.0+ 0.6+ 120317 291 0.1- 0.0 130210 H06 0.4- 0.6+ 130801 130 0.2- 0.2- 120317 291 0.2+ 0.3- 130210 H06 0.1- 0.6+ 130801 130 0.6+ 0.4+ 120317 568 0.1- 0.1- 130316 H06 0.1+ 0.1- 130801 130 0.0 0.5+ 120317 568 0.0 0.1- 130316 H06 0.1- 0.2- 130801 C23 0.9- 0.0 120317 568 0.0 0.1- 130414 J24 0.6- 0.1+ 130801 130 0.4- 0.2- 120318 H06 0.5+ 0.4+ 130414 J24 1.3+ 0.2+ 130801 C23 0.1+ 0.2- 120318 H06 0.9+ 0.4+ 130414 J24 1.1+ 0.8+ 130801 C23 0.5- 0.6- 120320 E07 0.1+ 0.3- 130605 W96 0.3+ 0.9- 130802 H45 0.7- 1.2+ 120320 E07 0.2+ 0.2- 130605 W96 0.0 0.4- 130802 H45 0.9- 1.4+ 120321 372 0.0 0.2+ 130605 W96 (5.9+ 4.3-) 130802 H45 0.7- 1.3+ 120321 372 1.1- 0.6+ 130701 561 0.1+ 0.1- 130802 H45 0.5- 1.0+ 120321 372 0.2+ 0.5+ 130701 561 0.1+ 0.1- 130802 H45 0.1+ 1.2+ 120324 703 1.2- 0.1+ 130701 561 0.0 0.2- 130802 H45 0.2+ 1.1+ 120324 703 1.2- 0.9+ 130701 561 0.0 0.3- 130802 C32 (2.7+ 0.8+) 120324 703 1.1- 1.3+ 130712 215 0.6- 1.4- 130802 C32 0.4+ 0.1+ 120324 703 0.7- 0.1+ 130712 215 0.3+ 1.4- 130806 585 0.1+ 0.6- 120324 349 0.1- 1.0+ 130712 215 0.3- 1.2- 130806 585 0.6+ 0.4+ 120324 349 0.1+ 0.7+ 130713 W96 0.7+ 0.5- 130806 585 0.1+ 0.6- 120413 F51 0.0 0.0 130713 W96 0.7- 0.4- 130806 585 0.9+ 0.3- 120413 F51 0.0 0.0 130717 C10 0.9+ 0.6+ 130806 585 0.0 0.2- 120413 F51 0.0 0.0 130717 C10 0.2+ 0.9+ 130806 585 0.4+ 0.4- 120422 703 0.0 0.5- 130725 511 0.2- 0.3+ 130806 585 0.1- 0.0 120422 703 0.7+ 1.2- 130725 511 0.1- 0.3- 130806 585 0.5- 0.1- 120422 703 1.0+ 0.6- 130725 511 0.3- 0.1+ 130806 585 0.5- 0.0 120422 703 0.4- 1.2+ 130726 511 0.1- 1.0- 130806 585 0.0 0.6- 120428 D95 0.3- 0.6+ 130726 511 0.4- 0.7- 130809 C23 1.1+ 0.8+ 120428 D95 0.9+ 0.1- 130726 511 0.3+ 0.1- 130809 C23 1.0+ 0.6+ 120517 215 0.4- 0.3- 130731 A77 (2.9+ 0.0 ) 120517 215 0.3- 0.5- 130731 A77 (2.9+ 0.0 ) ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2014 Apr. 7

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