Nakano Note (Nakano wa Kangaeru noda) NK 4514 P/2021 K1 (ATLAS)
The following improved orbital elements, by S. Nakano, are from 192 observations 2020 Apr. 20 to 2021 Aug. 2. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.34 arc second. The comet has passed 2.03 AU from Uranus on 1965 March and 2.55 AU from Jupiter on 2021 Mar. 22 UT. Also comet will pass 4.03 AU from Uranus on 2046 June 15 UT. See the previous orbits in CBET 4968 and NK 4468. Epoch = 2021 Apr. 16.0 TT T = 2021 May 4.67127 +/- 0.00070 (m.e.) TT Peri. = 184.33414 +/- 0.00027 Node = 140.90549 +/- 0.00007 (2000.0) Inc. = 16.27569 +/- 0.00002 q = 2.4979364 +/- 0.0000030 AU e = 0.8043680 +/- 0.0000162 a = 12.7685465 +/- 0.0010562 AU n' = 0.02160190 +/- 0.00000269 P = 45.626 +/- 0.0056552 years (+/- 2.07 days) The predicted orbit for the 2065 return is as follows: T = 2065 Aug. 20.14859 TT Epoch = 2065 Aug. 23.0 TT Peri. = 184.07518 e = 0.8021864 Node = 140.73555 (2000.0) a = 12.5776668 AU Inc. = 16.27511 n'= 0.02209551 q = 2.4880341 AU P = 44.607 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2020/ 210526 W79 0.4+ 0.0 210626 C51 0.2- 0.2+ 200420 F51 0.4- 0.5+ 210526 W88 0.3+ 0.1- 210626 C51 0.2- 0.4+ 200420 F51 0.4- 0.2+ 210526 W79 0.3+ 0.1- 210626 C51 0.0 0.1- 200420 F51 0.0 0.2+ 210526 W79 0.4+ 0.2- 210626 C51 0.0 1.3+ 200420 F51 0.0 0.0 210527 L81 0.4+ 0.2- 210626 C51 0.0 0.2- 200423 F51 0.2- 0.4+ 210527 L81 0.3+ 0.1- 210626 C51 0.4+ 0.1+ 200502 F52 0.1- 0.2+ 210527 L81 0.5+ 0.1- 210626 C51 0.8- 0.3+ 200517 F51 0.2+ 0.1+ 210527 X02 0.1- 0.2- 210626 C51 0.2- 0.2- 200517 F51 0.4- 0.2+ 210527 X02 0.0 0.2- 210627 T08 0.2- 0.3+ 200525 F52 0.1- 0.3+ 210527 W88 0.2+ 0.2- 210627 T08 0.4- 0.1- 200525 F52 0.2+ 0.2+ 210527 X02 0.0 0.2- 210627 T08 0.0 0.2+ 200525 F52 0.2+ 0.4+ 210527 W88 0.2+ 0.1+ 210627 T08 0.1+ 0.5+ 200615 F52 0.2- 0.2- 210527 W88 0.1+ 0.1- 210705 T08 0.0 0.1- 200615 F52 0.2- 0.2+ 210527 W88 0.5- 0.4+ 210705 T08 0.1- 0.1+ 200615 F52 0.1- 0.1- 210527 W88 0.3+ 0.4- 210705 T08 0.1- 0.2+ 200615 F52 0.6- 0.2+ 210530 T08 0.6- 0.0 210705 T08 0.3- 0.2+ 200617 F51 0.1- 0.1+ 210530 T08 0.6- 0.0 210707 T05 0.6- 0.2+ 200617 F51 0.1+ 0.1- 210530 T08 0.4- 0.0 210707 T05 0.7- 0.2+ 200617 F51 0.2+ 0.1+ 210530 T08 0.8- 0.4+ 210707 T05 0.4- 0.0 200617 F51 0.1+ 0.3+ 210604 C53 1.0- 1.2- 210707 T05 0.3+ 0.0 200622 F52 0.1+ 0.4+ 210604 C53 0.4- 0.3+ 210709 T08 0.3- 0.2+ 200622 F52 0.1+ 0.2- 210604 C53 0.2+ 0.1- 210709 T08 0.2- 0.2+ 200622 F52 0.1+ 0.3- 210604 C53 0.0 0.3- 210709 T08 0.2+ 0.0 200622 F52 0.1+ 0.0 210604 C53 0.3- 0.5- 210709 T08 0.1- 0.1+ 200710 F51 0.0 0.0 210607 T08 1.1- 0.0 210713 T08 0.0 0.1+ 200710 F51 0.1+ 0.1- 210607 T08 0.6- 0.0 210713 T08 0.1- 0.2+ 200710 F51 0.1+ 0.0 210607 T08 0.2- 0.0 210713 T08 0.0 0.3+ 200710 F51 0.1+ 0.1- 210607 T08 1.0- 0.0 210713 T08 0.2- 0.2+ 200713 F51 0.2+ 0.0 210608 X03 0.6+ 0.2+ 210714 Z10 0.2- 0.3- 200713 F51 0.2+ 0.1- 210608 X03 0.4+ 0.1- 210714 Z10 0.5- 0.0 200713 F51 0.3+ 0.0 210608 X03 0.4+ 0.3- 210714 Z10 0.1- 0.2- 200713 F51 0.0 0.1- 210608 X03 0.1+ 0.1- 210715 A77 0.1+ 0.1+ 200717 F51 0.1- 0.0 210615 T08 0.7- 0.0 210715 A77 1.0+ 0.2+ 200717 F51 0.1+ 0.2+ 210615 T08 0.8- 0.0 210715 A77 0.6+ 0.0 200720 F51 0.1- 0.1- 210615 T08 0.9- 0.1- 210717 Z10 0.3- 0.8- 200720 F51 0.1- 0.0 210615 T08 0.2- 0.0 210717 Z10 0.2- 0.2- 200720 F51 0.0 0.0 210617 F51 0.5+ 0.2- 210717 Z10 0.0 0.0 200812 F52 0.0 0.5- 210617 T05 0.5- 0.0 210717 X03 0.4+ 0.0 200812 F52 0.3+ 0.2+ 210617 F51 0.5+ 0.2- 210717 X03 0.4+ 0.1+ 200812 F52 0.4+ 0.6- 210617 F51 0.5+ 0.2- 210717 X03 0.3+ 0.1+ 200812 F52 0.4+ 0.8- 210617 T05 0.4- 0.0 210717 X03 0.0 0.3+ 2021/ 210617 T05 0.6- 0.1+ 210717 T08 0.1+ 0.2+ 210514 T08 0.3- 0.1+ 210617 T05 0.4- 0.2+ 210717 T08 0.1- 0.0 210514 T08 0.5- 0.1+ 210618 215 0.2+ 0.6- 210717 T08 0.1- 0.3+ 210514 T08 0.1- 0.2+ 210618 215 0.1+ 0.3+ 210717 T08 0.4- 0.2+ 210514 T08 0.0 0.2- 210618 215 0.4+ 0.5+ 210721 T08 0.1- 0.2+ 210522 F51 0.1+ 0.0 210621 T05 0.2- 0.3+ 210721 T08 0.1+ 0.3+ 210522 F51 0.2+ 0.0 210621 T05 0.5- 0.2+ 210721 T08 0.4+ 0.2+ 210522 F51 0.2+ 0.0 210621 T05 0.4- 0.0 210721 T08 0.4+ 0.0 210522 F51 0.2+ 0.0 210621 T05 0.4- 0.2- 210722 Z10 0.1- 0.7- 210522 F51 0.2+ 0.2- 210623 T08 0.6- 0.2+ 210722 Z10 0.5+ 0.9- 210522 F51 0.3+ 0.0 210623 T08 0.7- 0.3+ 210722 Z10 0.0 0.5- 210522 F51 0.3+ 0.0 210623 T08 0.5- 0.3+ 210722 T05 0.1+ 0.2+ 210522 F51 0.2+ 0.1- 210623 T08 0.0 0.1+ 210722 T05 0.2- 0.1+ 210524 T05 0.4- 0.1- 210625 C51 0.3+ 0.9+ 210722 T05 0.1- 0.1- 210524 T05 0.8- 0.0 210625 C51 1.1+ 0.3- 210722 T05 0.1- 0.5+ 210524 T05 0.6- 0.2- 210625 T05 0.0 1.0+ 210725 T08 0.2+ 0.5+ 210526 Y00 0.4- 0.2- 210625 T05 0.6- 0.1+ 210725 T08 0.1+ 0.2+ 210526 Y00 0.1+ 0.1- 210625 T05 0.4- 0.9+ 210725 T08 0.3+ 0.2+ 210526 Y00 0.1+ 0.2- 210625 T05 0.4+ 0.4+ 210725 T08 0.2- 0.4+ 210526 Y00 0.0 0.2- 210625 C51 0.7- 0.2+ 210802 T08 0.4- 0.4+ 210526 W88 0.5+ 0.3- 210625 C51 0.4- 0.1+ 210802 T08 0.3- 0.4+ 210526 Y00 0.0 0.3+ 210625 C51 0.4+ 0.4- 210802 T08 0.3- 0.3+ 210526 W88 0.6- 0.1- 210625 C51 0.1+ 1.0- 210802 T08 0.1+ 0.0 210526 W88 0.2+ 0.0 210626 C51 0.5- 0.7+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2021 Aug. 16