Nakano Note (Nakano wa Kangaeru noda) NK 4805 C/2021 S4 (Tsuchinshan)
The following improved orbital elements, by S. Nakano, are from 75 observations 2021 Sept. 8 to 2022 Aug. 26. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.41 arc second. Residuals on 2022 August observations were -6" mainly for Right Ascension from an orbit in NK 4637. The comet has passed 7.95 AU from Neptune on 2008 June 7 and will pass 3.95 AU from Jupiter on 2024 Apr. 23 UT. See the previous orbits in CBET 5052 and NK 4637. Epoch = 2024 Jan. 11.0 TT T = 2024 Jan. 2.54406 +/- 0.06108 (m.e.) TT Peri. = 72.88547 +/- 0.00798 Node = 5.48808 +/- 0.00017 (2000.0) Inc. = 17.47862 +/- 0.00011 q = 6.6898715 +/- 0.0004563 AU e = 0.9590893 +/- 0.0001380 1/a = +0.0061153 +/- 0.0000206 1/AU origin = +0.006693 (Q= 7) future = +0.007484 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2021/ 211004 D29 0.2- 0.3+ 211107 F52 0.4- 0.1- 210908 F52 0.0 0.2+ 211004 D29 0.1+ 0.3+ 211107 F52 0.4- 0.1- 210908 F52 0.0 0.2+ 211006 E10 0.6- 0.1- 211109 W62 1.5+ 0.1+ 210908 F52 0.1+ 0.2+ 211006 E10 0.2- 0.2- 211109 W62 1.3+ 0.3- 210908 F52 0.1+ 0.2+ 211006 E10 0.0 0.2- 211109 W62 0.2+ 0.1+ 210911 F52 0.0 0.2+ 211006 B49 (2.1+ 0.2+) 211128 J43 0.3- 0.0 210911 F52 0.0 0.2+ 211006 B49 (2.2+ 0.2+) 211128 J43 0.5- 0.1- 210916 G96 0.1+ 0.1+ 211007 L06 0.1+ 0.2- 211128 J43 0.4- 0.3- 210916 G96 0.1- 0.1+ 211007 L06 0.1+ 0.2- 211130 W62 0.4- 0.0 210916 G96 0.2- 0.6+ 211007 L06 0.4+ 0.0 211130 W62 0.5+ 0.0 210916 G96 0.1- 0.1+ 211007 L06 0.6+ 0.4- 211130 W62 0.5+ 0.2+ 210928 F51 0.1- 0.2+ 211008 G00 0.0 0.2- 2022/ 210928 F51 0.2- 0.1+ 211008 G00 0.0 0.4+ 220125 215 0.9+ 0.8- 210929 D29 0.0 0.1- 211010 215 0.3+ 0.4- 220125 215 0.7+ 0.5- 210929 D29 0.2+ 0.1+ 211010 215 0.1+ 0.3- 220125 215 0.6+ 0.3- 210929 D29 0.0 0.1- 211010 215 0.3- 0.2- 220812 D29 0.9- 0.0 210930 F51 0.2- 0.2+ 211013 X03 0.7- 0.1- 220812 D29 0.4- 0.1- 210930 F51 0.1- 0.1+ 211013 X03 0.7- 0.1+ 220812 D29 0.4+ 0.4+ 210930 F51 0.2- 0.1+ 211013 X03 0.7- 0.1+ 220824 T08 0.6- 0.2+ 211002 157 0.7+ 1.9+ 211031 F52 0.3- 0.0 220824 T08 0.0 0.6- 211002 157 0.1+ 0.5+ 211031 F52 0.4- 0.1- 220824 T08 0.1- 0.4+ 211003 D29 0.1- 0.7- 211031 F52 0.3- 0.1- 220824 T08 0.2+ 0.0 211003 D29 0.3- 0.1+ 211031 F52 0.4- 0.0 220826 F52 0.0 0.3- 211003 246 1.2+ 1.3- 211107 H06 0.7- 0.2- 220826 F52 0.2+ 0.3+ 211003 246 (0.0 4.7+) 211107 H06 0.1- 0.2+ 220826 F52 0.1+ 0.3- 211004 H06 0.3+ 0.0 211107 F52 0.4- 0.1- 220826 F52 0.2+ 0.3+ 211004 H06 0.5+ 0.0 211107 F52 0.4- 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2022 Aug. 30