Nakano Note (Nakano wa Kangaeru noda) NK 3904 C/2019 K4 (Ye)

The following improved orbital elements, by S. Nakano, are from 194 observations 2019 Apr. 24 to Sept. 25. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.54 arc second. See the previous orbit in NK 3886. Epoch = 2019 June 6.0 TT T = 2019 June 16.41889 +/- 0.00387 (m.e.) TT Peri. = 139.77179 +/- 0.00156 Node = 180.16478 +/- 0.00005 (2000.0) Inc. = 105.30599 +/- 0.00031 q = 2.2594124 +/- 0.0000220 AU e = 0.9990722 +/- 0.0000319 1/a = +0.0004107 +/- 0.0000141 1/AU origin = +0.001461 (Q= 7) future = +0.000842 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2019/ 190605 N55 0.3- 0.2- 190730 B96 0.0 0.0 190424 I41 0.5+ 0.4- 190605 N55 0.0 0.1+ 190802 C23 0.9- 0.3+ 190424 I41 0.2+ 0.2+ 190606 711 0.9+ 0.4+ 190802 C23 0.4+ 0.3- 190424 I41 0.2+ 0.1+ 190606 711 0.5+ 0.2+ 190802 C23 0.1- 0.2- 190424 I41 0.7+ 0.2- 190606 711 0.5+ 0.2- 190802 C23 0.4+ 0.1- 190530 I41 0.1+ 0.5- 190606 N55 0.2- 0.2+ 190802 461 0.1+ 0.3+ 190530 I41 0.0 0.4- 190606 N55 0.3+ 0.4+ 190802 461 0.4+ 0.4+ 190530 I41 0.1+ 0.4- 190606 N55 0.0 0.1+ 190802 461 0.5+ 0.2+ 190530 I41 0.1+ 0.2+ 190607 N55 0.4- 0.6+ 190802 461 0.5+ 0.3+ 190531 A77 0.7+ 0.2- 190607 N55 0.4- 0.7+ 190802 461 0.2+ 0.3+ 190531 A77 0.2+ 0.5- 190607 N55 0.2- 0.2+ 190802 461 0.8+ 0.2+ 190531 A77 0.4+ 0.2- 190608 595 0.4- 0.5+ 190802 461 0.4+ 0.3+ 190531 G40 1.0+ 1.8- 190608 595 0.5- 0.3+ 190803 D95 1.2- 0.3- 190531 G40 0.1+ 0.1+ 190608 K88 0.3- 0.3+ 190803 D95 0.7- 0.5- 190531 C42 0.3+ 0.6- 190608 K88 0.2+ 0.1+ 190803 D95 1.0- 0.0 190531 C42 0.7+ 0.0 190608 K88 0.2+ 0.1+ 190806 D95 1.0- 0.9- 190531 C42 0.5+ 0.1- 190608 106 1.5+ 0.6+ 190806 D95 0.7- 0.1- 190531 C42 0.1- 0.3+ 190608 106 0.4+ 1.7- 190806 D95 1.1- 0.4- 190531 C42 0.6- 0.8+ 190608 Z84 0.5- 0.3+ 190807 Q11 0.0 0.2- 190601 A71 0.1- 0.4- 190608 Z84 0.6- 0.4+ 190807 Q11 0.2- 0.2- 190601 A71 0.8- 0.2- 190608 Z84 0.4- 0.4+ 190807 Q11 0.2- 0.2- 190601 A71 1.1- 0.3- 190608 Z84 0.1+ 0.3+ 190807 C23 1.5- 0.5+ 190601 A71 0.6- 0.3- 190609 N55 0.2- 0.1- 190807 C23 0.5- 0.0 190601 033 0.2- 0.2+ 190609 N55 0.5+ 0.0 190807 C23 1.0- 0.2- 190601 033 0.5- 0.0 190609 N55 1.0+ 0.5- 190807 C23 0.9- 0.0 190601 G40 0.4- 0.8+ 190610 K88 0.1+ 0.4+ 190808 K02 1.0+ 0.1+ 190601 G40 0.2+ 0.7+ 190610 K88 0.7+ 0.3+ 190808 K02 1.3- 0.0 190601 G40 0.3- 0.9+ 190617 C95 1.1- 0.3+ 190808 K02 0.8+ 0.2- 190601 186 1.1- 0.1+ 190617 C95 0.8- 0.6+ 190809 J22 0.5- 0.8- 190601 186 0.2+ 0.4+ 190617 C95 0.4- 0.3+ 190809 J22 1.1- 0.8- 190602 C10 (1.9- 2.1+) 190624 850 (2.5- 0.7-) 190809 J22 (2.2- 1.3-) 190602 C10 0.9- 1.2+ 190624 850 (4.0- 1.3+) 190811 461 0.1+ 0.2+ 190602 033 0.0 0.1- 190624 850 0.7- 0.8- 190811 461 0.1- 0.1+ 190602 033 0.3- 0.2+ 190626 Q23 1.1- 0.4+ 190811 461 0.6+ 0.2+ 190602 033 0.3+ 0.3+ 190626 Q23 0.9- 0.2+ 190811 A71 0.0 0.2- 190602 C10 0.5- 0.3+ 190629 K77 0.7+ 0.4+ 190811 A71 0.5+ 0.1- 190602 G40 0.1+ 0.2+ 190630 K77 1.2- 0.3+ 190811 A71 0.0 0.1+ 190602 G40 0.3+ 0.2+ 190630 215 0.6- 0.2+ 190811 A71 0.1- 0.3- 190602 G40 0.0 0.4+ 190630 215 0.7- 0.2+ 190811 A71 0.6- 0.5- 190602 N55 0.5+ 0.2+ 190630 215 0.7- 0.1+ 190811 A71 0.9- 0.0 190602 N55 0.7+ 0.1+ 190708 H06 1.8- 0.8+ 190811 A71 0.1+ 0.4- 190602 N55 0.8+ 0.4- 190708 H06 1.9- 0.8+ 190811 A71 0.6- 0.2- 190603 A71 1.0- 0.2- 190715 G40 1.0- 0.0 190812 F51 1.0+ 0.0 190603 A71 0.5- 0.4- 190715 G40 1.1- 0.3- 190812 F51 1.1+ 0.0 190603 L01 0.8- 1.4+ 190720 C95 0.5- 0.1- 190812 F51 1.1+ 0.1- 190603 033 0.2- 0.2+ 190720 C95 1.0- 0.2- 190812 461 0.0 0.3+ 190603 033 0.0 0.2+ 190720 C95 1.0- 0.3- 190812 461 0.1+ 0.2+ 190603 033 0.3+ 0.6- 190720 C95 0.1- 0.5- 190813 461 0.2- 0.3+ 190603 A71 0.2- 0.6- 190724 A71 0.3- 0.2- 190813 461 0.3+ 0.3+ 190603 A71 0.8- 0.8- 190724 A71 0.5- 0.0 190821 C23 0.4+ 0.3+ 190603 L01 0.1+ 0.2+ 190724 C23 0.8- 0.0 190821 C23 1.3- 0.5- 190603 157 0.5- 0.2+ 190724 C23 0.2- 0.1+ 190821 C23 0.1- 0.3- 190603 L01 0.5+ 0.4- 190724 A71 0.1+ 0.0 190826 H06 0.3- 0.3- 190603 157 0.7- 0.2+ 190724 C23 1.5- 0.2- 190826 H06 0.4- 0.1- 190603 U69 0.2+ 0.2- 190724 A71 0.3- 0.0 190902 Q11 0.5- 0.2- 190603 U69 0.3+ 0.2- 190724 A71 0.2- 0.2- 190902 Q11 0.2- 0.4- 190604 K61 0.3+ 0.5+ 190728 K02 0.1- 0.2+ 190902 Q11 0.2- 0.4- 190604 K61 0.6+ 0.1+ 190728 K02 (2.1- 0.1-) 190908 372 0.6- 0.1- 190604 K61 0.4+ 0.2- 190729 K02 (2.4- 2.0-) 190908 372 0.4- 0.2+ 190604 A71 1.0+ 0.3+ 190729 850 0.6+ 0.1- 190922 Q62 1.0- 0.6+ 190604 A71 1.3+ 0.0 190729 850 0.0 0.2- 190922 Q62 1.2- 0.5+ 190604 705 0.4- 0.3- 190729 850 0.6- 0.4- 190922 Q62 1.1- 0.4+ 190604 705 0.1- 0.4- 190729 349 0.9- 0.7- 190925 372 0.3- 0.4+ 190604 705 0.3- 0.1- 190729 349 0.3- 0.2- 190925 372 0.3- 0.5+ 190605 H06 0.1+ 0.1+ 190730 B96 0.3+ 0.3- 190925 Q11 0.9- 0.1+ 190605 H06 0.4+ 0.0 190730 B96 0.4- 0.8- 190925 Q11 0.3- 0.5+ 190605 N55 0.4+ 0.2+ 190730 B96 0.1+ 0.0 190925 Q11 0.5- 0.5+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2019 Oct. 1

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