Nakano Note (Nakano wa Kangaeru noda) NK 4935 C/2018 S3 (TESS)

The following improved orbital elements, by S. Nakano, are from 24 observations 2014 Feb. 15 to 2018 Dec. 1. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The weighting mean residual is +/- 1.83 arc seconds. The comet has passed 3.70 AU from Saturn on 2012 Mar. 22 UT. C57 observations were given 0.1 weighting for all observations. See an orbit in CBET 5229 (same orbit). Epoch = 2016 June 21.0 TT T = 2016 June 29.33766 +/- 0.00586 (m.e.) TT Peri. = 263.84087 +/- 0.00031 Node = 24.98676 +/- 0.00008 (2000.0) Inc. = 78.41812 +/- 0.00006 q = 7.9998357 +/- 0.0000555 AU e = 1.0004268 +/- 0.0000475 1/a = -0.0000534 +/- 0.0000059 1/AU origin = +0.000070 (Q= 9) future = +0.000031 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2014/ 180105 W84 0.2- 0.5+ 180925 C57 (0.5+ 14.3-) 140215 W84 0.2+ 0.1- 180105 W84 0.3- 0.5+ 180927 C57 3.8+ 9.5- 140215 W84 0.1- 0.1- 180909 W84 0.1+ 1.1+ 180928 C57 (8.7+ 19.4-) 2016/ 180922 C57 4.9+ 9.0- 180928 C57 (5.8+ 18.7-) 160214 W84 0.3+ 0.0 180922 C57 (1.4- 13.1-) 180928 C57 (4.5+ 13.8-) 160214 W84 0.1+ 0.1- 180922 C57 3.9+ 8.5- 180930 C57 (1.4+ 18.0-) 160215 W84 0.0 0.0 180922 C57 (3.1- 14.0-) 180930 C57 (3.9+ 14.4-) 160215 W84 0.1+ 0.1+ 180923 C57 (0.8+ 14.2-) 180930 C57 (0.9- 12.5-) 160229 W84 0.0 0.1+ 180923 C57 (3.3+ 10.7-) 180930 C57 (0.4- 14.1-) 160229 W84 0.1+ 0.2+ 180923 C57 3.1- 8.1- 181001 C57 3.6+ 5.9- 2017/ 180923 C57 2.9+ 7.1- 181022 W84 0.4- 1.2+ 171003 W84 0.3+ 0.3+ 180924 C57 3.2- 6.2- 181117 W84 0.0 0.8+ 171211 W84 0.1- 0.4+ 180924 C57 (6.1+ 11.8-) 181117 W84 0.0 1.1+ 2018/ 180924 C57 (0.6+ 12.3-) 181201 W84 0.3- 1.0+ ( ) -------- Rejected Obs.

Associate of the CBAT Late edition Syuichi Nakano 2023 Feb. 23

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