Nakano Note (Nakano wa Kangaeru noda) NK 2888 P/2006 D1 (Hill)

The following improved orbital elements, by S. Nakano, are from 82 observations 2005 Dec. 5 to 2006 Apr. 7. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.61 arc second. See an orbit in YC 2507. Epoch = 2005 Nov. 6.0 TT T = 2005 Oct. 25.99518 +/- 0.00086 (m.e.) TT Peri. = 118.19370 +/- 0.00088 Node = 0.95204 +/- 0.00006 (2000.0) Inc. = 17.45940 +/- 0.00013 q = 1.8921628 +/- 0.0000158 AU e = 0.6593873 +/- 0.0000165 a = 5.5551741 +/- 0.0000491 AU n' = 0.07527618 +/- 0.00000100 P = 13.093 +/- 0.0001737 years (+/- 0.06 day) The predicted orbit for the 2018 return is as follows: T = 2018 Dec. 21.49614 TT Epoch = 2018 Dec. 28.0 TT Peri. = 119.42615 e = 0.6593240 Node = 359.96409 (2000.0) a = 5.5629310 AU Inc. = 17.36497 n'= 0.07511879 q = 1.8951570 AU P = 13.121 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2005/ 060224 651 0.7+ 0.1- 060304 G96 0.1- 0.4- 051205 703 0.0 0.5- 060224 651 0.9+ 0.1+ 060304 G96 0.2- 0.2- 051205 703 1.1- 0.4+ 060224 734 0.5+ 0.2+ 060304 G96 0.7- 0.2+ 051205 703 1.8+ 1.4- 060224 734 0.1- 0.8- 060304 G96 0.7- 0.3+ 051205 703 1.9+ 0.5+ 060224 734 0.3+ 0.2+ 060305 673 0.7+ 0.1- 051205 703 0.9- 0.7+ 060224 682 0.3- 0.1+ 060305 673 0.5+ 0.2+ 051205 703 1.4- 1.3+ 060224 682 0.7- 0.1+ 060305 673 1.2+ 0.1+ 051205 703 0.7+ 0.2- 060224 682 0.6- 0.5+ 060305 673 1.4+ 0.1+ 2006/ 060224 701 1.0+ 0.3+ 060319 215 0.0 0.5+ 060102 704 0.3- 1.7- 060224 H36 0.6- 0.2- 060321 G96 0.5- 0.0 060102 704 1.4- 1.5+ 060224 H36 0.1+ 0.2- 060321 G96 0.3- 0.1+ 060102 704 (3.6- 0.9+) 060224 H36 0.5- 0.6- 060321 G96 0.0 0.2+ 060222 703 0.3+ 0.5- 060224 701 0.1+ 0.8+ 060321 G96 0.3- 0.2- 060222 703 0.3- 1.5+ 060224 701 0.1+ 0.6+ 060324 691 0.3+ 0.2+ 060222 703 0.1- 0.4- 060224 G96 0.3+ 0.3- 060324 691 0.1+ 0.3+ 060222 703 (3.3- 1.1+) 060224 G96 0.4+ 0.2- 060324 691 0.1+ 0.1+ 060222 703 (2.0- 1.2+) 060224 G96 0.2- 0.1- 060325 213 0.4- 0.2- 060222 703 (3.2- 1.7+) 060224 G96 0.1+ 0.4- 060325 213 0.6- 0.0 060222 703 0.9- 0.2- 060227 850 0.6- 1.1+ 060325 213 0.5- 0.0 060222 703 (2.1- 0.4-) 060227 850 0.5- 0.2+ 060326 H06 0.6+ 1.4- 060223 734 0.2- 0.1+ 060228 704 0.8- 0.7+ 060326 H06 0.1+ 0.4+ 060223 734 0.2- 0.3- 060228 704 1.1- 0.4+ 060402 G96 0.2- 0.2+ 060223 734 0.8- 0.4- 060228 704 0.6+ 1.1- 060402 G96 0.2- 0.5+ 060223 649 0.2- 0.3- 060228 704 0.3- 0.5- 060402 G96 0.3- 0.7+ 060223 649 0.4- 0.4- 060302 204 0.0 0.1+ 060402 G96 0.2- 0.0 060223 649 0.3+ 0.4- 060302 204 0.1- 0.4+ 060407 673 0.2+ 0.0 060223 673 0.9+ 1.0- 060302 204 0.8- 0.2- 060407 673 0.3+ 0.1- 060223 673 0.5+ 0.2- 060304 213 0.3+ 0.4- 060407 673 0.5+ 0.1+ 060223 673 1.6+ 0.3+ 060304 213 0.0 0.3- 060407 673 0.2+ 0.3- 060224 651 0.9+ 0.5+ 060304 213 0.1+ 0.2- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2015 May 5

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