Nakano Note (Nakano wa Kangaeru noda) NK 2598 C/2012 F3 (PANSTARRS)

The following improved orbital elements, by S. Nakano, are from 125 observations 2012 Jan. 19 to 2013 Dec. 14. 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. The comet will pass 4.29 AU from Uranus on 2022 Aug. 7 UT. Recent observations show the residuals of -9" maily R. A. from the orbit in NK 2477 (= HICQ 2013). See the previous orbits in NK 2403, NK 2467 and NK 2477. Epoch = 2015 Apr. 8.0 TT T = 2015 Apr. 6.67399 +/- 0.00362 (m.e.) TT Peri. = 104.02257 +/- 0.00053 Node = 164.61250 +/- 0.00006 (2000.0) Inc. = 11.35466 +/- 0.00007 q = 3.4568744 +/- 0.0000249 AU e = 1.0018068 +/- 0.0000115 1/a = -0.0005227 +/- 0.0000033 1/AU origin = +0.000017 (Q= 7) future = -0.000829 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2012/ 130219 D90 0.3+ 0.1+ 130407 D88 1.3- 0.3+ 120119 F51 0.2- 0.0 130219 D90 0.2+ 0.1- 130410 J43 0.5+ 0.1- 120119 F51 0.1- 0.3- 130219 D90 0.2+ 0.1+ 130410 J43 0.3+ 0.0 120119 F51 0.2- 0.1+ 130221 C10 0.0 0.2- 130410 J43 0.4+ 0.4- 120302 G96 0.3- 0.2+ 130221 C10 0.1+ 0.3+ 130410 J43 0.4+ 0.2- 120302 G96 0.3- 0.0 130305 130 0.0 0.2+ 130413 I57 0.1+ 1.8- 120302 G96 0.1- 0.6+ 130305 130 0.0 0.4+ 130413 I57 0.0 0.4+ 120302 G96 0.7- 1.0+ 130305 130 0.1- 0.1+ 130413 I57 (1.1- 2.1+) 120316 F51 0.4+ 0.1+ 130305 130 0.3+ 0.1+ 130413 J24 0.3- 0.4+ 120316 F51 0.2+ 0.2+ 130305 D29 0.4+ 0.7+ 130414 J24 0.6- 0.4+ 120316 F51 0.2+ 0.2+ 130305 D29 0.2- 0.6+ 130414 J24 0.3- 0.2+ 120316 F51 0.0 0.0 130305 D29 0.2+ 0.0 130414 511 0.1+ 0.0 120317 568 0.1- 0.2- 130308 F51 0.2+ 0.2- 130414 511 0.5+ 0.1- 120317 568 0.1- 0.2- 130308 F51 0.1+ 0.3- 130414 511 0.2+ 0.1+ 120317 568 0.0 0.3- 130308 F51 0.2+ 0.3- 130415 C91 0.0 0.0 120318 H06 0.2- 0.5+ 130308 F51 0.0 0.2- 130415 C91 0.2+ 0.5- 120318 H06 0.1+ 0.5+ 130310 D90 0.2+ 0.2- 130415 C91 0.2+ 0.1- 120318 H06 0.0 0.6+ 130310 D90 0.3+ 0.3- 130416 D90 0.2+ 0.2- 120321 372 0.0 0.3+ 130310 D90 0.0 0.2+ 130416 D90 0.1- 0.1+ 120321 372 0.2- 0.2+ 130311 691 1.0- 0.8+ 130416 D90 0.4+ 0.2- 120321 372 0.1- 0.1+ 130311 691 0.5- 0.5+ 130417 J24 0.7- 0.2+ 120324 372 1.4- 0.6- 130311 691 0.8- 0.7+ 130417 J24 0.5- 0.1+ 120324 372 1.4- 0.7- 130314 691 1.0- 1.5+ 130417 511 0.2- 0.1+ 120410 H06 0.5+ 0.6- 130314 691 1.2- 1.7+ 130417 J24 1.6- 0.9+ 120410 H06 0.6+ 0.4- 130314 691 1.0- 1.4+ 130417 511 0.0 0.1- 120410 H06 1.0+ 0.6- 130318 691 0.2- 0.5+ 130502 D95 0.3- 1.0+ 120419 G96 0.2- 0.0 130318 691 0.3- 0.4+ 130502 D95 0.1- 0.2+ 120419 G96 0.1- 0.0 130318 691 0.4- 0.6+ 130502 D95 0.8+ 0.2+ 120419 G96 0.1+ 0.3- 130331 D90 0.6+ 0.0 130503 B96 0.1- 0.2- 120419 G96 0.4+ 0.5+ 130331 D90 0.6+ 0.2- 130503 B96 1.5- 0.9- 121217 H06 0.3+ 0.4+ 130331 D90 0.6+ 0.2- 130503 B96 1.4+ 1.0+ 121217 H06 0.0 0.6+ 130401 E07 0.0 0.3- 130503 B96 0.2- 0.4+ 121217 H06 0.0 0.8+ 130401 D95 0.4+ 0.3+ 130503 B96 0.7- 1.3+ 121218 H06 0.4- 0.5+ 130401 E07 0.3+ 0.2- 130605 215 0.6- 0.6+ 121218 H06 0.1- 0.4- 130401 D95 0.0 0.4- 130605 215 0.5- 0.2+ 121218 H06 0.5+ 0.7- 130401 D95 0.6+ 0.4+ 130605 215 0.4+ 0.2- 2013/ 130401 D90 0.3+ 0.2- 130702 W96 0.5+ 0.6- 130208 H06 0.1+ 0.2+ 130401 D90 0.5+ 0.1+ 130702 W96 (2.6+ 0.4+) 130208 H06 0.2+ 0.0 130401 D90 0.5+ 0.1- 131211 H06 0.3- 0.5- 130208 H06 0.1+ 0.3- 130407 691 0.6- 0.7+ 131211 H06 0.4- 0.3- 130215 D29 0.0 0.6+ 130407 691 0.3+ 0.5+ 131211 H06 0.3- 0.2- 130215 D29 0.1+ 0.3- 130407 691 0.4- 0.7+ 131214 349 0.2- 0.6- 130215 D29 0.1+ 0.4- 130407 D88 0.5- 0.4- 131214 349 0.2+ 0.8- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2013 Dec. 24

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