Nakano Note (Nakano wa Kangaeru noda) NK 4781 C/2014 U3 (Kowalski)

The following improved orbital elements, by S. Nakano, are from 50 observations 2014 Feb. 24 to Dec. 22. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.60 arc second. The comet has passed 2.90 AU from Jupiter on 2014 July 23 and 4.47 AU from Saturn on 2012 Sept. 16 UT. Additional observations on 2014 Feb. 24 and Mar. 1 were reported, recently. As result, 2014 Dec. 26 observations are not belong with this comet. Epoch = 2014 Sept.20.0 TT T = 2014 Sept. 2.84414 +/- 0.00197 (m.e.) TT Peri. = 51.06630 +/- 0.00047 Node = 163.55721 +/- 0.00011 (2000.0) Inc. = 152.99280 +/- 0.00006 q = 2.5558284 +/- 0.0000132 AU e = 0.9933988 +/- 0.0000566 1/a = +0.0025828 +/- 0.0000221 1/AU origin = +0.002836 (Q= 7) future = +0.002926 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2014/ 141027 300 0.7- 0.1+ 141103 U69 0.4- 0.7- 140224 309 0.5+ 0.3- 141027 300 0.1- 0.7+ 141103 U69 0.3- 0.7- 140224 309 0.5+ 0.4- 141027 300 0.1- 0.5+ 141103 U69 0.4- 0.1- 140301 W84 0.4- 0.0 141027 300 0.2- 0.1+ 141116 H06 (1.7- 3.4-) 140301 W84 0.5- 0.2+ 141028 A71 0.1- 0.7+ 141116 H06 (1.1- 3.1-) 140301 W84 0.6- 0.2+ 141028 A71 (4.7- 3.1+) 141116 H06 (1.8- 2.9-) 141026 703 0.5+ 0.4+ 141028 I89 1.1+ 0.4+ 141124 703 0.1- 0.2+ 141026 703 (0.8+ 2.3+) 141028 I89 1.0+ 0.3+ 141124 703 0.3- 0.5- 141026 703 0.9+ 1.1+ 141028 I89 0.6+ 0.1+ 141124 703 0.6+ 0.9- 141026 703 0.8- 0.3- 141028 461 0.4- 0.4- 141124 703 1.1+ 0.4- 141026 703 0.1+ 0.0 141028 461 0.1- 0.8- 141125 H36 0.4- 0.1- 141026 703 0.8+ 0.3- 141028 461 0.2+ 0.2- 141125 H36 1.7- 0.7+ 141027 958 0.3- 0.0 141028 461 0.6- 0.3- 141125 H36 0.5- 0.4- 141027 958 0.1- 0.1- 141028 461 0.1- 0.3- 141127 461 0.3+ 0.3- 141027 958 1.2- 0.6- 141028 215 1.3+ 0.8+ 141127 461 0.1- 0.2- 141027 958 0.8- 0.3+ 141028 215 0.5+ 0.4+ 141222 F51 0.2- 0.2- 141027 461 0.2+ 0.0 141029 D03 (2.3- 3.2+) 141222 F51 0.3+ 0.4- 141027 461 0.2+ 0.0 141029 D03 0.8- 0.9+ 141226 I89(43.3- 15.3-) 141027 H47 0.8- 0.6+ 141030 850 0.7+ 0.9+ 141226 I89(43.1- 15.5-) 141027 H47 1.6+ 0.5- 141030 850 1.5+ 0.7- 141226 I89(43.3- 15.2-) ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2022 Aug. 2

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