Nakano Note (Nakano wa Kangaeru noda) NK 4686 C/2021 T1 (Lemmon)
The following improved orbital elements, by S. Nakano, are from 110 observations 2021 Sept. 15 to 2022 Apr. 1. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.46 arc second. Accuracy of orbit depends upon one night observations on 2022 April 1. The comet has passed 3.24 AU from Jupiter on 2022 Jan. 19 UT. See an orbit in CBET 5053. Epoch = 2021 Nov. 2.0 TT T = 2021 Oct. 14.06698 +/- 0.00777 (m.e.) TT Peri. = 51.49847 +/- 0.00176 Node = 56.81320 +/- 0.00032 (2000.0) Inc. = 140.34896 +/- 0.00012 q = 3.0579913 +/- 0.0000130 AU e = 0.9978515 +/- 0.0000603 1/a = +0.0007026 +/- 0.0000197 1/AU origin = +0.000976 (Q= 7) future = +0.000755 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2021/ 211004 B96 (3.6- 1.1+) 211010 Q11 0.4+ 0.6+ 210915 703 (3.9- 1.8-) 211004 B49 0.1- 0.3- 211010 Q11 0.3+ 0.5+ 210915 703 1.0+ 0.8- 211004 B49 0.0 0.1+ 211010 Q11 0.2+ 0.3+ 211002 G96 0.2- 0.2- 211004 B49 0.2+ 0.8- 211010 215 0.3+ 0.2+ 211002 G96 0.2+ 0.2+ 211004 B49 0.5+ 0.8- 211010 215 0.3- 0.2- 211002 G96 0.0 0.1+ 211004 595 0.7+ 0.1- 211010 215 0.7- 0.4- 211002 G96 0.1- 0.1- 211004 595 0.6+ 0.1- 211012 658 0.2- 0.6+ 211002 G96 0.5+ 0.0 211004 595 0.9+ 0.9- 211012 658 0.1+ 0.7+ 211002 G96 0.3- 0.2+ 211005 G02 0.9- 0.5- 211012 658 0.3+ 0.6+ 211002 G96 0.5- 0.1- 211005 G02 0.9- 0.6- 211012 658 0.1+ 0.4+ 211002 G96 0.1- 0.1+ 211005 G02 0.6- 0.8- 211012 658 0.2+ 0.1+ 211002 P93 0.4- 0.5+ 211006 L27 0.1+ 0.5- 211013 A77 (1.1- 3.0+) 211002 P93 0.0 0.7- 211006 I93 0.1- 0.2+ 211013 A77 (1.6- 4.7-) 211002 P93 0.2- 0.1- 211006 L27 1.4+ 0.8- 211013 A77 (1.5- 12.9-) 211002 P93 0.3- 0.0 211006 I93 0.2- 0.0 211015 G96 0.4- 0.2+ 211002 N51 0.5- 0.1- 211006 L06 0.8- 0.8- 211015 G96 0.3- 0.0 211002 N51 0.2- 0.4+ 211006 L27 0.3- 0.1+ 211015 G96 0.2+ 0.5+ 211002 L01 0.4+ 0.4+ 211006 L06 0.3- 0.7- 211023 B37 0.1- 0.8+ 211002 L01 0.4+ 0.0 211006 L06 0.1+ 0.8- 211023 B37 0.2+ 0.4+ 211002 L01 0.2+ 0.4+ 211006 L27 0.1+ 0.2+ 211023 B37 0.4+ 0.1+ 211002 L01 0.1- 0.4+ 211006 L27 0.4+ 0.8+ 211024 G96 0.1- 0.2- 211002 L01 0.2+ 0.0 211007 A77 (5.6- 1.3-) 211024 G96 0.3- 0.0 211002 157 1.0+ 0.0 211007 A77 0.3+ 0.1- 211024 G96 0.3+ 0.1- 211002 157 0.4+ 0.9- 211007 A77 (4.6- 3.4-) 211024 G96 0.1+ 0.1- 211003 H06 0.4+ 0.1- 211007 N51 1.2- 0.5- 211025 G96 0.1- 0.2+ 211003 H06 0.2- 0.4- 211007 N51 1.2- 0.5- 211025 G96 0.0 0.1+ 211003 246 0.1+ 0.1- 211007 K74 0.6+ 0.4- 211025 G96 0.3- 0.0 211003 246 0.3- 0.5+ 211007 K74 0.4+ 0.9+ 211025 G96 0.5- 0.2+ 211003 246 0.1- 0.2+ 211007 A77 0.5- 0.1- 211105 G96 0.6+ 0.0 211004 H21 0.1- 0.7+ 211007 K74 0.9+ 0.7+ 211105 G96 0.1- 0.2+ 211004 H21 0.3- 0.4+ 211007 A77 1.4- 0.1+ 211105 G96 0.1- 0.0 211004 H21 0.0 0.7+ 211007 A77 0.8- 0.3- 211106 941 0.0 0.1+ 211004 858 0.1+ 0.4+ 211007 J57 0.1+ 0.2+ 211106 941 1.0- 0.7- 211004 858 0.5- 0.3+ 211007 J57 0.1+ 0.6- 211106 941 0.6+ 0.3+ 211004 858 0.3+ 0.1- 211007 958 0.1- 0.3- 211107 H06 0.3+ 0.3- 211004 C82 0.7- 1.9+ 211007 958 0.5+ 1.0+ 211107 H06 0.5+ 0.1+ 211004 C82 0.7- 0.9+ 211007 958 1.2+ 0.4- 2022/ 211004 C82 0.1- 1.5- 211007 Z28 0.3- 0.0 220401 568 0.1+ 0.0 211004 C82 0.5+ 0.7- 211007 Z28 0.3- 0.0 220401 568 0.0 0.0 211004 B96 0.1- 0.2- 211007 Z28 0.3- 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2022 Apr. 22