Nakano Note (Nakano wa Kangaeru noda) NK 3666 P/2014 U4 (PANSTARRS)

The following improved orbital elements, by S. Nakano, are from 61 observations 2014 Sept. 2 to Nov. 17. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.48 arc second. Epoch = 2014 Aug. 11.0 TT T = 2014 Aug. 3.92496 +/- 0.00264 (m.e.) TT Peri. = 347.72897 +/- 0.00153 Node = 12.04439 +/- 0.00031 (2000.0) Inc. = 6.45661 +/- 0.00010 q = 1.8433613 +/- 0.0000211 AU e = 0.4710552 +/- 0.0000145 a = 3.4849787 +/- 0.0001034 AU n' = 0.15149695 +/- 0.00000675 P = 6.506 +/- 0.0002897 years (+/- 0.11 day) The predicted orbit for the 2021 return is as follows: T = 2021 Feb. 13.29508 TT Epoch = 2021 Jan. 26.0 TT Peri. = 347.73838 e = 0.4649437 Node = 11.89028 (2000.0) a = 3.5063640 AU Inc. = 6.42885 n'= 0.15011309 q = 1.8761022 AU P = 6.566 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2014/ 141030 595 0.1- 0.5+ 141030 958 0.7- 0.0 140902 F51 0.0 0.2- 141030 958 0.1- 0.2+ 141101 I93 0.1- 0.5- 140902 F51 0.0 0.0 141030 958 0.1- 0.0 141101 I93 0.1+ 0.5+ 140902 F51 0.1+ 0.0 141030 958 0.0 0.7+ 141101 291 0.2+ 0.2+ 140902 F51 0.1- 0.1+ 141030 W96 0.4- 1.4- 141101 291 0.1+ 0.1+ 140930 703 0.3- 0.4+ 141030 W96 0.4- 1.2- 141101 291 0.2- 0.2+ 140930 703 0.7- 1.0- 141030 W96 0.7- 0.5- 141102 H21 0.5- 0.9- 141017 691 1.6- 0.3- 141030 W96 0.4+ 0.4- 141102 H21 0.3- 0.5+ 141017 691 0.1- 0.5+ 141030 W96 0.7+ 0.4- 141104 291 0.0 0.1+ 141017 691 0.4- 0.0 141030 H06 0.9- 0.9+ 141104 291 1.4+ 0.5- 141025 691 0.0 0.1- 141030 H06 0.8- 0.9+ 141104 291 0.7- 0.3+ 141025 691 0.8- 0.1- 141030 H06 1.0- 0.6+ 141110 291 0.5+ 0.3+ 141025 691 1.2- 0.9+ 141030 291 0.1- 0.1- 141110 291 0.1- 0.1+ 141028 F51 0.3+ 0.1- 141030 291 0.1- 0.3+ 141110 291 0.1+ 0.0 141028 F51 0.3+ 0.0 141030 291 0.4- 0.3+ 141112 958 0.3- 0.6+ 141028 F51 0.2+ 0.0 141030 568 0.1+ 0.0 141112 958 0.7- 0.4+ 141028 F51 0.3+ 0.1+ 141030 568 0.0 0.1+ 141112 958 0.6- 0.3- 141029 691 0.7- 0.3+ 141030 568 0.1+ 0.1+ 141117 F51 0.0 0.1+ 141029 691 0.6- 0.0 141030 958 0.3- 0.6- 141117 F51 0.1+ 0.2- 141029 691 0.5- 0.3+ 141030 958 0.7- 0.6- 141117 F51 0.0 0.2- 141029 595 0.2+ 0.0 141030 958 0.3- 0.1+ ( ) -------- Rejected Obs.

Associate of the CBAT Late edition Syuichi Nakano 2014 Dec. 10

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