Nakano Note (Nakano wa Kangaeru noda) NK 2801 314P/Montani (1997 G1 = 2014 U1)

The following improved orbital elements, by S. Nakano, are from 93 observations 1997 to 2014. 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. The recovery observations show the residuals of +459" (R. A.) and +117" (Decl.) from the prediction in NK 1659 (= HICQ 2014) with the delta-T correction = -1.39 day. Epoch = 2016 Oct. 19.0 TT T = 2016 Oct. 7.98710 +/- 0.02068 (m.e.) TT Peri. = 213.74911 +/- 0.00140 Node = 267.70474 +/- 0.00039 (2000.0) Inc. = 3.97861 +/- 0.00002 q = 4.2338407 +/- 0.0000128 AU e = 0.4169155 +/- 0.0000012 a = 7.2611102 +/- 0.0000037 AU n' = 0.05037320 +/- 0.00000004 P = 19.566 +/- 0.0000149 years T = 1997 Apr. 6.78722 TT Epoch = 1997 Apr. 22.0 TT Peri. = 213.49655 e = 0.4164993 Node = 267.87463 (2000.0) a = 7.2224133 AU Inc. = 3.98969 n'= 0.05077858 q = 4.2142833 AU P = 19.410 years The predicted orbit for the 2036 return is as follows: T = 2036 Apr. 30.39608 TT Epoch = 2036 Apr. 17.0 TT Peri. = 214.02904 e = 0.4175838 Node = 267.45718 (2000.0) a = 7.2753673 AU Inc. = 3.98545 n'= 0.05022520 q = 4.2372921 AU P = 19.624 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1997/ 970514 691 0.2- 0.5+ 980302 402 0.2- 0.2+ 970409 691 1.0- 0.1- 970517 381 0.6+ 0.4+ 980302 402 0.2- 0.5- 970409 691 0.3- 0.4- 970517 381 0.6- 0.4- 980302 402 0.6+ 0.0 970409 691 0.4- 0.1- 970519 046 0.0 0.2- 980302 360 0.0 0.7+ 970410 691 0.4+ 0.2- 970524 709 1.8+ 0.6- 980302 360 0.3- 1.0+ 970410 691 0.3+ 0.4- 970525 360 0.4+ 0.4+ 980304 704 (3.1- 0.8+) 970410 691 1.0+ 0.3+ 970526 360 0.4+ 0.8- 980304 704 (4.4- 1.9+) 970411 691 0.3- 0.3+ 970526 360 1.1+ 0.1- 980304 704 (5.1- 2.1+) 970411 691 0.1- 0.1- 970526 360 0.3+ 0.3+ 980304 704 (8.8- 1.2-) 970411 658 0.9- 1.1- 970601 696 0.7+ 0.1- 980524 691 0.1- 0.2- 970411 658 1.5- 0.8- 970601 696 0.3+ 0.3- 980524 691 0.1+ 0.2+ 970412 658 0.9- 0.4+ 970604 691 (3.6- 3.2+) 980524 691 0.9+ 0.5- 970412 658 0.0 0.2+ 970604 691 1.6+ 0.5+ 980618 696 0.7+ 0.3- 970412 658 0.1- 0.1- 970604 691 0.8- 1.1- 980618 696 0.4+ 0.1- 970419 658 0.2- 0.2+ 971124 691 (2.6+ 3.4-) 980618 696 0.7+ 0.1+ 970419 658 1.0+ 0.3+ 971124 691 (1.2+ 2.2-) 2014/ 970419 658 0.2- 0.3+ 971124 691 1.9- 0.4- 141013 691 0.8- 0.1- 970424 402 0.4+ 1.5+ 971124 691 0.2- 0.9+ 141013 691 0.1+ 0.2+ 970424 402 0.7- 0.9- 971124 691 0.4+ 0.1+ 141013 691 0.3+ 0.3+ 970424 402 0.3+ 0.6+ 971124 691 0.7- 0.3+ 141021 691 0.3+ 0.3+ 970424 046 (2.7+ 1.7-) 971205 867 0.4+ 0.3+ 141021 691 0.8- 0.1- 970424 046 1.7+ 1.6- 971205 867 0.1+ 0.5+ 141021 691 0.2- 0.0 970427 402 1.6- 1.5+ 971205 867 0.1+ 0.2+ 141025 691 0.1+ 0.0 970427 402 0.5- 0.3+ 971227 360 0.5+ 0.3- 141025 691 0.1- 0.1+ 970427 402 0.1- 1.3+ 971227 360 0.7- 0.8- 141025 691 0.1- 0.6- 970501 691 0.4- 0.5- 1998/ 141028 H06 0.3+ 0.4- 970501 691 0.3- 0.3- 980131 691 0.8- 0.4- 141028 H06 0.2+ 0.1- 970501 691 0.8+ 0.1- 980201 867 0.5- 0.1- 141028 H06 0.1+ 0.2+ 970501 046 (0.0 2.2+) 980201 867 0.6- 0.4- 141028 215 0.3+ 0.4- 970501 046 0.0 1.4+ 980201 867 1.1- 0.0 141028 215 0.4+ 0.1- 970514 696 0.7+ 0.3- 980202 360 0.7+ 0.3- 141028 215 0.5+ 0.1- 970514 696 0.0 0.1- 980202 360 0.1- 0.4- 141029 691 0.3- 0.1- 970514 696 0.8+ 0.1- 980202 360 0.3+ 0.7- 141029 691 0.1+ 0.2+ 970514 691 (2.2- 1.6-) 980222 691 0.3- 0.0 141029 691 0.3- 0.2+ 970514 691 1.5- 0.3- 980222 691 0.6+ 0.0 970514 691 0.2+ 0.6+ 980222 691 0.1+ 0.8+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2014 Nov. 11

Back to Nakano Note Page