Nakano Note (Nakano wa Kangaeru noda) NK 2728 303P/NEAT (2003 U3 = 2014 L1)

The following improved orbital elements, by S. Nakano, are from 126 observations 2003 to 2014. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.58 arc second. The Residuals for the recovery observations from the prediction in NK 1030 (= HICQ 2013) were +0.47 deg for R. A. and +0.24 deg with the delta-T correction = -1.67 days. Epoch = 2014 Oct. 30.0 TT T = 2014 Oct. 13.58778 +/- 0.00771 (m.e.) TT Peri. = 357.01563 +/- 0.00145 Node = 348.02144 +/- 0.00039 (2000.0) Inc. = 7.00376 +/- 0.00007 q = 2.4877747 +/- 0.0000417 AU e = 0.5089142 +/- 0.0000079 a = 5.0658659 +/- 0.0000232 AU n' = 0.08644175 +/- 0.00000059 P = 11.402 +/- 0.0000782 years T = 2003 Apr. 23.11833 TT Epoch = 2003 May 1.0 TT Peri. = 356.27222 e = 0.5088527 Node = 348.36795 (2000.0) a = 5.0820865 AU Inc. = 7.04652 n'= 0.08602823 q = 2.4960532 AU P = 11.457 years The predicted orbit for the 2026 return is as follows: T = 2026 Feb. 19.96042 TT Epoch = 2026 Feb. 9.0 TT Peri. = 357.07502 e = 0.5100422 Node = 347.90793 (2000.0) a = 5.0378463 AU Inc. = 7.01674 n'= 0.08716391 q = 2.4683320 AU P = 11.308 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2003/ 031024 104 0.4+ 0.6+ 031030 704 (0.4+ 2.9-) 031017 699 (0.0 2.1-) 031024 104 0.9+ 0.2+ 031102 704 0.6- 0.7+ 031017 699 0.7- 0.0 031025 A41 0.1+ 1.0+ 031102 704 1.4- 0.9- 031017 699 1.1- 0.6- 031025 130 0.1+ 0.4+ 031102 704 1.0- 0.6- 031017 699 1.7- 0.1- 031025 130 0.3+ 0.3- 031103 785 (2.7- 1.4+) 031022 644 0.2- 0.1+ 031025 A50 0.1+ 0.2+ 031103 785 (2.8- 1.6-) 031022 644 0.3- 0.2+ 031025 A50 0.1+ 0.0 031103 170 0.8- 0.7- 031022 644 0.3- 0.2- 031025 A50 0.2+ 0.1+ 031103 170 0.4- 0.1- 031023 673 0.5+ 0.3+ 031025 A41 0.9+ 0.6- 031117 360 0.1+ 1.1- 031023 673 1.1+ 0.2+ 031025 A50 0.4- 0.4+ 031117 360 0.3- 0.4- 031023 673 0.6+ 0.5+ 031025 A50 0.8+ 0.6+ 031119 704 0.8+ 0.4+ 031023 673 0.6+ 0.0 031025 A50 0.0 0.2- 031119 704 0.5+ 0.4- 031023 673 0.8+ 0.1+ 031025 A50 0.3+ 0.0 031119 704 0.0 0.6- 031023 673 1.0+ 0.4+ 031025 A50 0.1- 0.5- 031119 704 0.1+ 0.2+ 031023 850 0.1+ 0.3+ 031025 A50 0.4+ 0.2+ 031119 704 0.9+ 0.1+ 031023 850 0.6- 1.0- 031025 A50 0.0 0.2- 031121 691 0.1- 0.5- 031023 850 0.0 0.3- 031025 A50 0.6+ 0.0 031121 691 0.3+ 0.5- 031023 850 0.8+ 0.8- 031025 A50 0.2+ 0.4+ 031121 691 0.1+ 0.4- 031023 850 0.6- 0.3- 031025 A50 0.2- 0.2- 031123 372 0.6+ 1.3+ 031023 850 0.3- 0.2+ 031025 A50 0.3- 0.5- 031123 372 0.4+ 1.0+ 031023 926 0.8+ 0.0 031025 A50 1.1- 0.3+ 031127 213 1.3- 0.3+ 031023 926 0.5+ 0.1+ 031025 A50 0.3- 0.1- 031127 213 0.2- 1.3- 031023 213 (0.4+ 2.2-) 031025 A50 0.2+ 0.4+ 031127 213 (0.3+ 2.6-) 031023 213 0.7+ 1.5- 031025 A50 1.1- 0.7+ 031128 213 0.7+ 0.2+ 031024 850 0.5+ 0.3- 031026 204 0.2- 0.1- 031128 213 0.8+ 0.3+ 031024 850 1.1+ 0.6+ 031026 204 0.2+ 0.3- 031128 213 0.8+ 0.2+ 031024 850 0.3+ 0.9+ 031026 204 0.1- 0.4- 031211 620 0.9+ 0.8- 031024 H41 (2.1+ 0.6-) 031028 850 0.4- 0.5- 031212 213 0.6- 1.2- 031024 850 0.0 0.9+ 031028 850 1.1- 0.6+ 031212 213 0.1+ 0.1+ 031024 H41 (2.4+ 0.1-) 031028 850 0.8+ 0.8+ 031212 620 0.3+ 0.5- 031024 H41 (4.2+ 1.1-) 031028 850 0.7- 0.1+ 031212 620 0.5+ 0.3- 031024 850 (2.4- 1.1+) 031028 850 0.9+ 1.3+ 031214 360 0.0 0.3- 031024 H41 0.1- 0.6- 031028 246 0.7- 0.4- 031214 360 0.0 0.0 031024 H41 0.1- 0.3+ 031028 246 0.5- 1.1- 031223 215 (2.0- 0.5-) 031024 H41 0.7+ 0.2+ 031028 246 0.3- 0.4- 031228 704 (2.5- 1.1-) 031024 850 0.1+ 0.6+ 031028 246 0.9- 0.2- 031228 704 0.5- 0.3+ 031024 850 (0.3+ 2.3+) 031029 699 0.2- 0.7- 031228 704 0.6+ 0.6+ 031024 608 0.6+ 1.3+ 031029 699 1.1- 0.2+ 2004/ 031024 608 0.1+ 0.5+ 031029 699 0.3- 1.2- 040117 360 0.2+ 0.1+ 031024 608 0.2+ 1.0+ 031029 699 1.4- 0.2+ 040117 360 1.0- 1.0+ 031024 342 0.3+ 0.2+ 031029 360 0.3- 0.1- 040117 360 0.1+ 0.2+ 031024 360 0.0 0.1+ 031029 360 0.2+ 0.0 2014/ 031024 360 0.1+ 0.2- 031029 360 0.1- 0.1- 140601 J04 0.2- 0.2- 031024 342 (2.3- 0.4-) 031030 785 (2.5- 3.4-) 140601 J04 0.4- 0.3- 031024 372 0.1- 0.4- 031030 785 1.6- 0.3- 140601 J04 0.1+ 0.0 031024 342 0.2- 0.2- 031030 704 0.4+ 0.3- 140602 J04 0.2- 0.2+ 031024 372 0.7- 0.6- 031030 704 0.4- 0.2+ 140602 J04 0.7+ 0.1- 031024 104 0.1+ 1.0+ 031030 704 0.8+ 0.7+ 140602 J04 0.3+ 0.2+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2014 June 23

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