2021 October 08, 12:15:50 UT Orbital elements: C/2021 S4 (Tsuchinshan) Epoch 2024 Jan. 11.0 TT = JDT 2460320.5 T 2023 Dec. 26.30590 TT Sato q 6.7816125 (2000.0) P Q n 0.00088155 Peri. 71.61585 +0.22838069 -0.97316064 a 107.7218937 Node 5.42432 +0.74138507 +0.15500328 e 0.9370452 Incl. 17.41695 +0.63102332 +0.17009511 P1118.04 From 33 observations 2021 Sept. 8-Oct. 7, mean residual 0".49. Epoch 2021 Nov. 2.0 TT = JDT 2459520.5 T 2023 Dec. 24.52010 TT Sato q 6.7858939 (2000.0) P Q n 0.00089841 Peri. 71.44192 +0.23117479 -0.97249911 a 106.3702917 Node 5.43418 +0.74092559 +0.15709236 e 0.9362050 Incl. 17.41898 +0.63054539 +0.17195197 P1097.06 Residuals in seconds of arc 210908 F52 0.1- 0.1+ 210929 D29 0.0 0.2- 211004 D29 0.2- 0.2+ 210908 F52 0.0 0.0 210929 D29 0.2+ 0.0 211006 E10 1.1- 0.1- 210908 F52 0.0 0.0 210929 D29 0.1+ 0.3- 211006 E10 0.7- 0.2- 210908 F52 0.0 0.1+ 210930 F51 0.2- 0.0 211006 E10 0.5- 0.2- 210911 F52 0.0 0.0 210930 F51 0.1- 0.1- 211006 B49 1.6+ 0.3+ 210911 F52 0.0 0.1- 210930 F51 0.2- 0.0 211006 B49 1.7+ 0.2+ 210916 G96 0.2+ 0.2- 211002 157 0.5+ 1.8+ 211007 L06 0.4- 0.2- 210916 G96 0.0 0.1- 211002 157 0.0 0.5+ 211007 L06 0.5- 0.1- 210916 G96 0.1- 0.3+ 211003 D29 0.5- 0.0 211007 L06 0.1- 0.0 210916 G96 0.0 0.2- 211003 246 0.9+ 1.4- 211007 L06 0.0 0.3- 210928 F51 0.0 0.0 211003 246 (0.2- 4.6+) 210928 F51 0.1- 0.1- 211004 D29 0.5- 0.2+ --