Nakano Note (Nakano wa Kangaeru noda) NK 3858 P/Kowalski (2014 U2 = 2019 O1)

The following improved orbital elements, by S. Nakano, are from 165 observations 2014 to 2019. 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. Residuals of recovery observations were -71" for Right Ascension and -45" for Declination from the prediction in NK 3208 (= HICQ 2019) with the delta-T correction = +0.015 day. Epoch = 2019 Oct. 4.0 TT T = 2019 Oct. 11.41153 +/- 0.00012 (m.e.) TT Peri. = 37.64348 +/- 0.00015 Node = 354.23510 +/- 0.00012 (2000.0) Inc. = 7.28121 +/- 0.00002 q = 1.1163582 +/- 0.0000012 AU e = 0.6153237 +/- 0.0000004 a = 2.9020720 +/- 0.0000043 AU n' = 0.19936173 +/- 0.00000044 P = 4.944 +/- 0.0000109 years T = 2014 Oct. 7.14820 TT Epoch = 2014 Sept.20.0 TT Peri. = 35.24927 e = 0.6029848 Node = 356.18177 (2000.0) a = 2.9326156 AU Inc. = 7.49562 n'= 0.19625529 q = 1.1642928 AU P = 5.022 years The predicted orbit for the 2024 return is as follows: T = 2024 Sept.19.14363 TT Epoch = 2024 Sept. 7.0 TT Peri. = 37.71271 e = 0.6163022 Node = 354.19995 (2000.0) a = 2.8983287 AU Inc. = 7.28330 n'= 0.19974808 q = 1.1120822 AU P = 4.934 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2014/ 141027 H21 0.0 0.1- 141120 372 1.9- 0.9- 141018 703 0.5- 1.1- 141027 H21 0.0 0.1+ 141122 F51 0.1+ 0.1- 141018 703 0.9- 0.4+ 141027 H21 0.1- 0.1- 141122 F51 0.2+ 0.0 141025 703 (2.0- 0.4+) 141027 H21 0.1+ 0.5+ 141122 F51 0.1+ 0.2- 141025 703 0.1+ 0.2- 141027 H21 0.1- 0.2- 141123 130 0.2- 0.4- 141025 703 1.6- 0.0 141027 H21 0.1- 0.1+ 141123 130 0.2- 0.7- 141025 703 1.6- 0.8+ 141027 300 0.5- 0.6- 141123 130 1.0- 0.2- 141025 703 1.9- 0.4+ 141027 300 0.2- 0.1- 141123 130 1.5- 0.5- 141025 703 0.6- 0.1+ 141027 300 0.2- 0.2+ 141124 C23 0.1- 0.7- 141025 900 0.4+ 0.5+ 141027 300 0.7- 0.4+ 141124 C23 0.6- 0.8- 141025 900 0.2- 0.1- 141027 C23 (3.9- 1.5-) 141125 I81 1.1- 0.5- 141025 900 0.5+ 0.3+ 141027 C23 0.1+ 0.2+ 141125 I81 0.6- 0.3- 141025 L04 0.4+ 0.4+ 141027 C23 0.1+ 0.1+ 141125 I81 0.8- 0.4- 141025 L04 0.2- 0.7+ 141028 A71 0.8- 0.3+ 141125 I81 1.4- 0.8- 141025 L04 0.3+ 0.4+ 141028 A71 0.2- 0.3- 141126 F51 0.2+ 0.1- 141025 160 0.7- 0.1+ 141028 A71 0.5- 0.1- 141126 F51 0.1+ 0.0 141025 160 0.4+ 0.3+ 141028 C23 1.6- 0.1+ 141126 F51 0.2+ 0.1- 141026 160 0.4+ 0.3+ 141028 C23 1.4- 1.2+ 141126 F51 0.2+ 0.0 141026 160 0.4- 0.3+ 141028 C23 0.3- 0.5- 141129 349 0.6- 0.0 141026 958 0.4+ 0.1+ 141028 372 0.3+ 0.9- 141129 349 0.7- 0.3- 141026 958 0.5+ 0.1+ 141028 372 0.7+ 0.9- 141130 F51 0.1+ 0.1+ 141026 958 0.1+ 0.2+ 141028 215 0.1+ 0.2- 141130 F51 0.1+ 0.1+ 141026 157 1.8+ 0.3+ 141028 215 0.1+ 0.1- 141130 F51 0.2+ 0.1+ 141026 I89 0.2+ 0.0 141028 215 0.3+ 0.3- 141130 F51 0.1+ 0.1+ 141026 I89 0.1+ 0.1- 141029 I81 1.1+ 0.3+ 141214 461 0.0 0.2+ 141026 157 1.6+ 0.4+ 141029 I81 1.2+ 0.3+ 141214 461 0.1- 0.5+ 141026 I89 0.3+ 0.0 141029 I81 1.1+ 0.3+ 141214 461 0.3- 0.5+ 141026 157 0.7+ 0.5+ 141029 I81 1.6+ 0.3+ 141214 461 0.1- 0.4+ 141026 157 1.8+ 0.0 141030 850 0.1- 0.3- 141216 F51 0.1+ 0.1+ 141026 H06 0.2- 1.0+ 141030 850 0.2- 0.0 141216 F51 0.1+ 0.1+ 141026 H06 0.2- 0.7+ 141031 K38 0.3- 0.2+ 141216 F51 0.1+ 0.1+ 141026 H06 0.2- 0.0 141031 C23 0.7- 0.1- 141223 703 0.7- 0.5- 141026 H01 0.3+ 0.2+ 141031 C23 1.5- 0.2+ 141223 703 1.5- 0.9- 141026 H01 0.3+ 0.2+ 141031 C23 0.2- 0.1+ 141230 703 1.2- 1.7- 141026 H01 0.3+ 0.2+ 141031 K38 0.1- 0.1- 141230 703 0.4- 1.0- 141026 H01 0.2+ 0.4+ 141101 W96 0.4+ 0.5- 141230 703 0.2- 0.7+ 141026 H47 0.0 0.9- 141101 W96 0.6+ 1.1- 2015/ 141026 H47 1.1- 0.5- 141101 703 (2.6- 0.1+) 150110 703 0.4- 0.5- 141026 V37 0.6+ 0.3+ 141101 703 1.3- 0.6+ 150110 703 0.3+ 0.2- 141026 H06 0.3+ 0.4+ 141101 703 1.5- 0.3+ 150110 703 0.8+ 0.3+ 141026 V37 0.4+ 0.2+ 141101 703 1.1- 0.5+ 150110 703 0.7- 0.4- 141026 V37 0.5+ 0.1+ 141101 372 0.0 0.7- 150115 703 0.6- 1.2- 141026 H06 0.1+ 0.1+ 141101 372 0.2+ 0.9- 150115 703 0.8- 1.0+ 141026 695 0.2- 0.1- 141101 598 0.4+ 0.0 150115 703 0.9- 1.2+ 141026 695 0.1- 0.1+ 141101 598 0.3+ 0.1- 150115 703 (0.7+ 2.8+) 141026 695 0.1+ 0.2+ 141101 598 0.5+ 0.1+ 150116 F51 0.0 0.1+ 141026 104 0.1- 1.1- 141103 I81 0.9+ 0.0 150116 F51 0.0 0.1+ 141027 104 1.3- 0.2- 141103 I81 0.7+ 0.2+ 150116 F51 0.0 0.1+ 141027 104 (2.6- 0.2+) 141103 I81 0.5+ 0.1+ 150116 F51 0.0 0.1+ 141027 K38 0.3+ 0.0 141103 372 0.3+ 0.1+ 150118 F51 0.0 0.0 141027 K38 0.3+ 0.1- 141103 372 0.5+ 0.0 150118 F51 0.0 0.0 141027 958 0.6+ 0.4- 141116 703 1.1- 0.0 2019/ 141027 958 0.4+ 0.2- 141116 703 1.3- 0.6- 190727 Q62 0.7- 0.4- 141027 958 0.8+ 0.0 141116 703 (2.2- 0.6-) 190727 Q62 0.6- 0.0 141027 W96 0.1+ 0.5- 141120 I81 0.7+ 0.4+ 190727 Q62 0.2- 0.2+ 141027 W96 0.0 0.1+ 141120 I81 0.0 0.0 190728 Q62 0.2+ 0.6+ 141027 G39 0.8- 0.4+ 141120 I81 0.2+ 0.2- 190728 Q62 0.6+ 0.1+ 141027 G39 0.8+ 1.5- 141120 372 1.2- 0.4- 190728 Q62 0.3+ 0.1+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2019 July 29

Back to Nakano Note Page