Nakano Note (Nakano wa Kangaeru noda) NK 3682 P/Hill (2010 A1 = 2018 P1)
The following improved orbital elements, by S. Nakano, are from 161 observations 2010 to 2018. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.63 arc second. Residuals of recovery observations from the prediction in NK 2878 (= HICQ 2018) were -0.43 deg for Right Ascension and -0.19 deg for Declination with the delta-T correction = +1.16 days. Epoch = 2018 Oct. 9.0 TT T = 2018 Oct. 15.16133 +/- 0.00167 (m.e.) TT Peri. = 13.28404 +/- 0.00064 Node = 47.32173 +/- 0.00026 (2000.0) Inc. = 10.30830 +/- 0.00006 q = 1.9571919 +/- 0.0000176 AU e = 0.5542436 +/- 0.0000038 a = 4.3907213 +/- 0.0000542 AU n' = 0.10712733 +/- 0.00000198 P = 9.200 +/- 0.0001704 years (+/- 0.06 day) T = 2009 Aug. 6.82235 TT Epoch = 2009 July 28.0 TT Peri. = 13.09207 e = 0.5542979 Node = 47.42032 (2000.0) a = 4.3746869 AU Inc. = 10.33494 n'= 0.10771684 q = 1.9498071 AU P = 9.150 years The predicted orbit for the 2027 return is as follows: T = 2027 Dec. 19.31077 TT Epoch = 2027 Dec. 21.0 TT Peri. = 13.31534 e = 0.5553702 Node = 47.23919 (2000.0) a = 4.3749693 AU Inc. = 10.31953 n'= 0.10770641 q = 1.9452418 AU P = 9.151 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2010/ 100116 204 0.0 0.5- 100125 H45 0.5+ 0.9- 100106 703 0.2+ 0.2+ 100116 204 0.2+ 0.2- 100125 H45 0.1+ 0.2- 100106 703 1.0- 1.0+ 100116 D95 1.3- 1.7+ 100125 H45 0.7+ 0.3- 100106 703 (2.2- 0.7-) 100116 D95 1.8- 1.5+ 100125 H45 0.5+ 0.2- 100106 703 (2.4- 0.2+) 100116 900 0.2+ 0.9+ 100125 H45 0.2- 0.8- 100106 703 0.5- 0.8- 100116 900 0.4- 0.4+ 100202 213 0.0 0.4- 100106 703 0.4- 0.1- 100116 372 1.4+ 1.0+ 100202 213 0.4+ 1.0- 100106 703 1.6- 0.5+ 100116 372 1.5+ 1.2- 100203 213 0.6- 0.5- 100106 G96 0.7- 0.2+ 100116 372 1.1- 0.7+ 100205 J02 1.1+ 0.4- 100106 G96 0.2- 0.7+ 100116 J40 1.2- 0.4+ 100205 J02 0.1+ 0.2- 100106 G96 0.7- 0.5+ 100116 J40 1.3- 0.9+ 100205 473 0.2+ 0.1- 100106 G96 0.3- 0.0 100116 J40 0.8- 0.5- 100205 473 0.2+ 0.1- 100106 900 0.4- 0.4+ 100117 900 0.6- 0.2- 100206 349 0.4+ 1.4- 100106 900 0.7- 0.8- 100117 900 1.2+ 0.3+ 100206 349 0.5- 0.6- 100107 J95 0.2- 0.1- 100117 A77 0.0 0.2+ 100206 A77 0.9- 0.8- 100107 J95 0.5+ 0.1+ 100117 A77 0.7- 0.1- 100206 A77 0.7- 1.1+ 100107 H06 0.3+ 0.4+ 100117 A77 (2.6- 0.5-) 100206 A77 (0.9- 2.0-) 100107 H06 0.9- 0.2+ 100118 104 1.9+ 0.9+ 100206 204 0.2- 0.3- 100107 H06 (3.3- 0.5+) 100118 104 0.1- 0.7+ 100206 473 0.2+ 0.2- 100107 703 1.3- 0.2- 100118 104 0.3- 0.9+ 100206 473 0.3+ 0.2- 100107 703 1.5- 0.0 100118 473 0.0 0.1+ 100207 B18 0.8+ 0.0 100107 703 1.6- 0.5+ 100118 473 0.3+ 0.2+ 100207 B18 0.7+ 0.9- 100107 703 0.7- 0.5+ 100119 215 0.3+ 0.2+ 100207 B18 0.2+ 0.5- 100107 H01 0.5+ 0.2+ 100119 215 0.5+ 0.1+ 100212 H06 0.7- 0.1- 100107 H01 0.7+ 0.1+ 100119 473 0.0 0.0 100212 H06 0.5- 0.4- 100107 H01 0.7+ 0.1+ 100119 215 0.2+ 0.5- 100214 703 1.5+ 0.7+ 100107 H01 0.7+ 0.0 100119 473 0.3+ 0.1+ 100214 703 0.3+ 0.0 100107 372 0.2+ 0.1- 100119 160 0.7+ 0.7+ 100214 703 0.5- 1.2- 100107 372 0.1- 0.9- 100119 160 0.4+ 0.2+ 100214 703 0.1- 1.2- 100107 355 0.4- 0.7+ 100119 160 0.3+ 0.3- 100216 B82 (6.4+ 1.2+) 100107 355 0.4- 0.2+ 100121 104 0.2+ 0.6- 100219 J01 0.7- 0.3- 100107 355 0.0 0.5+ 100121 104 0.4+ 0.5+ 100219 J01 1.2- 0.5- 100108 349 0.7- 0.9+ 100121 104 (0.7- 2.1-) 100220 B09 (2.6- 4.4-) 100108 349 0.5- 0.9+ 100121 B33 1.3+ 0.6+ 100220 B09 1.4- 1.1- 100109 J01 0.2+ 0.1- 100121 B33 1.3+ 0.8- 100220 A77 0.6+ 0.8- 100109 J01 0.6- 0.2- 100121 B33 0.1- 0.7- 100220 A77 0.4+ 0.4- 100110 H06 0.3+ 0.0 100122 349 0.5+ 0.9+ 100220 A77 0.7- 0.5- 100110 H06 0.0 0.2+ 100122 349 0.1- 1.3+ 100306 B82 (0.7- 3.2+) 100110 D93 (2.0+ 0.8+) 100122 152 0.8- 0.5+ 100306 B82 0.0 0.8- 100110 D93 0.6+ 0.3- 100122 152 0.6+ 0.6- 100306 B82 1.5+ 0.8- 100110 A77 0.8+ 0.1+ 100122 152 0.7+ 1.1+ 100307 850 (1.7- 4.0+) 100110 A77 0.1+ 0.7- 100122 152 0.3+ 1.0+ 100307 850 (3.4- 4.2+) 100110 A77 0.2+ 0.3- 100122 152 0.3- 0.7+ 100307 850 (2.5- 2.6+) 100111 H10 0.0 0.3+ 100122 152 0.6+ 0.6- 100307 850 (4.0- 3.1+) 100111 H10 0.2+ 0.2+ 100123 213 0.1- 0.3- 100307 B82 (2.4+ 1.9+) 100111 H10 0.9+ 0.4- 100123 213 0.0 0.1- 100308 B82 0.9- 0.8- 100111 H10 0.3+ 0.2+ 100123 585 0.4- 0.0 100308 B82 0.3- 1.0+ 100111 H10 1.4- 0.6- 100123 585 0.1+ 0.5- 100308 224 (2.4- 0.9-) 100111 H10 0.7+ 0.9- 100123 585 0.4+ 1.1- 100308 224 (0.8- 2.2+) 100113 B82 1.2+ 0.3- 100123 585 1.0+ 0.5+ 100311 C10(10.3+ 6.8-) 100113 B82 (2.8+ 0.6+) 100123 585 0.3- 0.7+ 100316 224 0.5- 1.2+ 100113 B82 1.1- 0.5+ 100123 585 0.5- 0.1+ 100317 H21 1.0- 1.1+ 100113 900 0.2+ 0.1- 100123 561 0.7- 0.3- 100317 H21 0.4- 1.5+ 100113 900 1.1- 0.7- 100123 561 0.8+ 0.7- 100317 H21 0.0 1.2- 100115 213 0.0 0.7+ 100123 561 (0.5- 2.3+) 2018/ 100115 213 0.7+ 0.4+ 100124 900 0.9- 0.3+ 180810 J04 0.3- 0.1- 100115 213 0.9+ 0.1+ 100124 900 1.5+ 0.9- 180810 J04 0.3- 0.1- 100115 157 0.9+ 0.2+ 100124 J01 0.5+ 0.4+ 180810 J04 0.2- 0.2- 100115 157 0.2+ 0.3- 100124 J01 0.2+ 0.7+ 180812 Y28 0.0 0.0 100116 473 0.0 0.2+ 100125 H45 1.6+ 0.8- 180812 Y28 0.1+ 0.1- 100116 473 0.2+ 0.0 100125 H45 0.7+ 1.3- 180812 Y28 0.1+ 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2018 Sept. 8