Nakano Note (Nakano wa Kangaeru noda) NK 3905 C/2019 K7 (Smith)
The following improved orbital elements, by S. Nakano, are from 187 observations 2019 May 30 to Sept. 25. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.44 arc second. The comet will pass 2.26 AU from Jupiter on 2020 Apr. 10 UT. Epoch = 2020 May 31.0 TT T = 2020 June 16.92044 +/- 0.01496 (m.e.) TT Peri. = 27.29266 +/- 0.00205 Node = 307.92507 +/- 0.00059 (2000.0) Inc. = 103.52828 +/- 0.00213 q = 4.4749135 +/- 0.0000858 AU e = 1.0011110 +/- 0.0002054 1/a = -0.0002483 +/- 0.0000459 1/AU origin = +0.000107 (Q= 6) future = +0.000471 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2019/ 190609 T08 0.4+ 0.7- 190627 Q38 1.1- 0.6+ 190530 T05 0.3+ 0.2+ 190609 T08 0.0 0.5- 190627 Q38 1.1+ 0.3+ 190530 T05 0.5+ 0.4- 190609 T08 0.0 0.6- 190627 Q38 0.2- 0.2- 190530 T05 0.4+ 0.0 190609 T08 0.4+ 0.7- 190628 E23 0.3+ 0.3+ 190530 T05 0.5+ 0.4- 190609 T08 0.3+ 0.7- 190628 E23 0.2- 0.7+ 190601 G40 0.3- 0.3- 190609 T08 0.2+ 0.8- 190628 E23 0.3- 0.5+ 190601 G40 0.1+ 0.0 190609 T08 0.3+ 0.9- 190629 T08 0.2+ 0.3- 190601 I47 0.1- 0.3- 190609 N55 0.0 0.4+ 190629 T08 0.4+ 0.7- 190601 I47 0.2- 0.3- 190609 N55 0.1+ 0.0 190629 T08 0.3+ 0.5- 190601 I47 0.1- 0.6- 190609 N55 0.2- 0.6+ 190629 T08 0.6+ 0.4- 190601 T08 0.2+ 0.3- 190610 N55 0.1- 0.3+ 190701 850 0.4- 0.1+ 190601 T08 0.1+ 0.5- 190610 N55 0.0 0.0 190701 850 0.5- 0.1+ 190601 T08 0.2+ 0.8- 190610 N55 0.2+ 0.3+ 190701 850 0.3- 0.2+ 190601 T08 0.2+ 0.4- 190611 T05 0.1- 0.4+ 190701 850 0.2- 0.2- 190601 Q67 0.0 0.1- 190611 T05 0.2+ 0.4- 190701 850 0.3- 0.1- 190601 Q67 0.5+ 0.2+ 190611 T05 0.3+ 0.3- 190703 F51 0.3- 0.5+ 190601 N55 0.4+ 0.5+ 190611 T05 0.1- 0.1+ 190703 T08 0.3+ 0.4- 190601 N55 0.0 0.5+ 190612 N55 0.0 0.2+ 190703 T08 0.5+ 0.5- 190601 N55 0.3+ 0.1+ 190612 N55 0.1+ 0.4+ 190703 T08 0.2+ 0.3- 190602 K91 0.5- 0.2+ 190612 N55 0.3+ 0.0 190703 F51 0.3- 0.5+ 190602 K91 0.5- 0.3+ 190614 N55 0.1+ 0.4- 190703 F51 0.3- 0.5+ 190602 K91 0.8- 0.2+ 190614 N55 0.0 0.3+ 190703 T08 0.3+ 0.5- 190602 K91 0.7- 0.3+ 190614 N55 0.7- 0.9+ 190704 Y00 1.1+ 0.8- 190602 N55 0.1- 0.1+ 190615 T05 0.3- 0.7+ 190704 Y00 1.0+ 0.8- 190602 N55 0.2+ 0.1- 190615 T05 0.0 0.0 190704 Y00 0.2+ 0.7- 190602 N55 0.6+ 0.5+ 190615 T05 0.1+ 0.0 190704 Y00 0.1- 0.2- 190603 J22 0.6- 0.2+ 190615 T05 0.1+ 0.3- 190704 Y00 0.5+ 0.4- 190603 J22 0.2- 0.1+ 190615 Q62 0.3- 0.2+ 190704 Y00 0.2- 0.2- 190603 J22 0.3+ 1.4+ 190615 Q62 0.3- 0.2+ 190704 Y00 (0.2+ 2.6-) 190603 T05 0.2+ 0.3- 190615 Q62 0.1- 0.1+ 190704 Y00 0.6- 1.5- 190603 T05 0.0 0.4- 190615 Q62 0.2- 0.1+ 190704 Y00 (0.3- 2.1-) 190603 T05 0.2+ 0.1- 190616 E94 0.7+ 1.3- 190704 Y00 0.1+ 0.3- 190603 T05 0.2+ 0.0 190616 E94 0.3+ 0.7- 190707 T05 0.4+ 0.5- 190604 I47 0.1+ 0.0 190616 E94 0.2+ 0.3- 190707 T05 0.2+ 0.2- 190604 I47 0.2+ 0.9+ 190616 E94 0.0 0.6- 190707 T05 0.2+ 0.4- 190604 I47 0.4+ 0.3- 190616 E94 0.2- 0.3- 190715 T08 0.3- 0.1+ 190604 Q62 0.3+ 0.2+ 190616 E94 0.0 0.2- 190715 T08 0.7+ 0.5- 190604 Q62 0.1+ 0.2+ 190617 E94 0.2- 0.3+ 190715 T08 0.1+ 0.0 190604 Q62 0.0 0.3+ 190617 E94 0.5- 0.4+ 190715 T08 0.1+ 0.5- 190604 Q62 0.0 0.1+ 190617 E94 0.4+ 0.5- 190716 I47 0.4+ 0.3+ 190604 Q62 0.0 0.1+ 190617 E94 0.0 0.0 190716 I47 0.2+ 0.3+ 190605 Q62 0.1- 0.4+ 190617 E94 0.1- 0.2- 190716 I47 0.2+ 0.4+ 190605 Q62 0.2+ 0.4+ 190617 E94 0.3+ 0.3- 190727 Q62 0.3+ 0.2+ 190605 Q62 0.1- 0.3+ 190617 E94 (2.0+ 0.1-) 190727 Q62 0.0 0.1+ 190605 Q62 0.1+ 0.3+ 190617 E94 0.2- 0.3- 190727 Q62 0.0 0.3+ 190605 Q62 0.1- 0.5+ 190617 E94 0.1+ 0.9- 190802 349 1.4+ 0.2- 190605 Q62 0.0 0.2+ 190617 E94 0.1- 0.6- 190802 349 (2.1+ 0.4+) 190605 N55 0.2+ 0.0 190617 E94 0.1+ 0.7- 190805 J22 0.6- 1.7- 190605 N55 0.5- 0.2+ 190617 E94 0.4+ 0.7- 190805 J22 0.2- 1.0- 190605 L29 0.1+ 0.3- 190620 822 0.0 0.3- 190805 J22 0.2- 0.2- 190605 N55 0.9- 0.7+ 190620 822 0.2- 0.2- 190810 349 0.4+ 0.2+ 190605 L29 0.2- 0.5+ 190625 X74 0.4+ 0.3- 190810 349 0.4+ 0.0 190605 L29 0.1+ 0.3+ 190625 X74 0.8+ 1.2- 190817 D95 0.6- 0.1+ 190606 N55 0.1- 0.2+ 190625 X74 0.4+ 1.1- 190817 D95 0.1- 0.2- 190606 N55 0.2- 0.5+ 190625 T08 0.3+ 0.2- 190817 D95 0.2- 0.4+ 190606 N55 0.1- 1.0+ 190625 T08 0.3+ 0.3- 190901 Q11 0.4- 0.2- 190607 N55 0.2- 0.5+ 190625 T08 0.2+ 0.4- 190901 Q11 0.4- 0.3- 190607 N55 0.1+ 0.2+ 190626 E94 0.2+ 0.2+ 190901 Q11 0.4- 0.1- 190607 N55 0.0 0.4+ 190626 E94 0.3- 1.4- 190907 349 0.8+ 0.0 190608 N55 0.9- 0.6+ 190626 E94 0.3+ 1.5- 190907 349 0.7+ 0.2+ 190608 N55 0.8- 0.7+ 190627 I52 0.3+ 0.3+ 190919 372 0.1- 0.1+ 190609 W88 0.2- 0.0 190627 I52 0.3- 0.0 190919 372 0.0 0.5+ 190609 W88 0.1+ 0.0 190627 I52 0.3+ 0.5- 190925 372 0.2+ 0.3+ 190609 T08 0.2- 0.6- 190627 I52 0.2+ 0.1- 190925 372 0.2- 0.3+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2019 Oct. 1