Nakano Note (Nakano wa Kangaeru noda) NK 4162 P/2017 S8 (PANSTARRS)

The following improved orbital elements, by S. Nakano, are from 165 observations 2017 Sept. 25 to 2018 Jan. 22. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.63 arc second. See the previous orbits in NK 3990. Epoch = 2018 Feb. 11.0 TT T = 2018 Jan. 28.64374 +/- 0.00398 (m.e.) TT Peri. = 254.56565 +/- 0.00319 Node = 191.80156 +/- 0.00042 (2000.0) Inc. = 29.85107 +/- 0.00064 q = 1.6830134 +/- 0.0000334 AU e = 0.3934711 +/- 0.0000077 a = 2.7748282 +/- 0.0000652 AU n' = 0.21323080 +/- 0.00000752 P = 4.622 +/- 0.0001630 years (+/- 0.06 day) The predicted orbit for the 2022 return is as follows: T = 2022 Sept.15.21678 TT Epoch = 2022 Sept.18.0 TT Peri. = 254.84632 e = 0.3907391 Node = 191.51965 (2000.0) a = 2.7777738 AU Inc. = 29.84914 n'= 0.21289171 q = 1.6923890 AU P = 4.630 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 171013 691 0.1- 0.4- 171019 G96 0.3- 0.0 170925 703 0.4+ 0.1- 171013 691 0.2- 0.0 171019 G96 0.0 0.2- 170925 703 0.9- 1.4+ 171013 K88 0.9- 0.2+ 171020 850 (2.2- 0.5+) 170927 G96 0.2+ 0.2- 171013 K88 0.6+ 0.2- 171020 850 0.5- 0.3- 170927 G96 0.3- 0.4+ 171014 703 1.3- 0.0 171020 850 1.3- 0.5+ 170927 G96 0.0 0.3+ 171014 703 1.9- 0.1+ 171020 850 0.8+ 0.3- 170927 G96 0.1- 0.1+ 171014 703 0.1+ 0.1- 171020 291 0.8- 0.4+ 170929 703 0.6+ 0.2- 171014 703 0.1+ 1.1- 171020 291 1.8- 0.7+ 170929 703 0.3+ 0.1- 171014 691 1.5- 0.5+ 171020 291 1.2- 0.1+ 170929 703 0.3- 0.0 171014 691 1.8- 1.0+ 171021 291 0.6- 0.1+ 170929 703 0.1- 0.9- 171014 691 0.8- 0.3+ 171021 291 0.2+ 0.0 170930 F51 0.4+ 0.1+ 171014 246 1.6- 0.4+ 171021 291 0.5- 0.1+ 170930 F51 0.5+ 0.0 171014 246 0.1+ 0.2- 171022 568 0.6+ 0.4- 170930 F51 0.6+ 0.6- 171014 246 0.3- 0.5- 171022 568 0.7+ 0.4- 170930 A71 0.0 0.1- 171015 B96 0.9- 0.1+ 171022 568 0.7+ 0.3- 170930 A71 0.1+ 0.4- 171015 B96 0.8- 0.5- 171023 703 0.5- 0.1- 171001 K88 0.1+ 0.3+ 171015 B96 1.7+ 0.5- 171023 703 0.7- 0.7+ 171001 118 0.1+ 0.8- 171015 B96 0.5+ 0.3- 171023 703 0.1- 0.7+ 171001 K88 0.1- 0.4+ 171015 106 0.0 0.7- 171023 703 0.1- 0.0 171001 K88 0.1- 0.1- 171015 106 1.4- 0.4+ 171024 I52 0.1- 0.4+ 171001 K88 0.3+ 0.3+ 171015 K88 0.0 0.1+ 171024 I52 0.6- 0.7+ 171001 118 0.1+ 0.9- 171015 106 0.7- 0.3+ 171024 I52 0.2+ 0.1- 171001 118 0.1+ 0.5- 171015 K88 0.4- 0.4+ 171024 I52 0.2- 0.2- 171001 H21 0.0 0.0 171015 106 0.6+ 0.2- 171025 H06 0.4- 0.4+ 171001 H21 0.2- 0.0 171016 246 0.6+ 0.9- 171025 H06 0.0 0.8+ 171001 H21 0.3- 0.1+ 171016 246 0.2+ 0.1+ 171025 H06 1.4- 0.5+ 171001 691 0.8- 0.4+ 171016 K88 0.3- 0.4+ 171026 703 1.9- 1.0+ 171001 691 0.2+ 0.4+ 171016 K88 0.3- 0.4+ 171026 G96 0.7- 0.3+ 171001 691 0.1+ 0.1+ 171016 K88 0.0 0.5+ 171026 703 1.3- 0.4+ 171001 F51 0.6+ 0.1+ 171016 104 0.5- 0.1+ 171026 G96 1.2- 0.7+ 171001 F51 0.6+ 0.1+ 171016 104 0.3- 0.2+ 171026 703 1.3- 0.8+ 171001 F51 0.5+ 0.1+ 171016 K63 0.2- 0.4+ 171026 G96 0.8- 0.6+ 171002 G40 0.3+ 0.2- 171017 104 0.2- 0.1+ 171026 703 0.1- 0.4+ 171002 G40 0.6- 0.1+ 171017 K63 0.6- 0.1+ 171026 G96 0.7- 0.4+ 171002 U69 (2.4+ 1.9+) 171017 K63 1.4- 0.5- 171026 I52 0.9- 0.3+ 171002 U69 (2.5+ 2.3+) 171017 K38 0.9- 0.1- 171026 I52 0.2- 0.1- 171003 926 1.1- 0.1+ 171017 K38 0.2+ 0.7+ 171026 I52 0.0 0.1- 171003 926 0.7- 0.3+ 171017 703 (2.2- 1.5+) 171026 I52 0.4+ 0.2+ 171003 926 0.5- 0.2+ 171017 703 1.3- 0.1+ 171026 Q62 1.4- 1.6- 171004 A77 1.0- 1.3+ 171017 703 0.0 0.0 171026 Q62 0.2+ 0.2- 171004 A77 0.7- 1.2- 171017 703 0.9- 0.2- 171026 Q62 0.8- 1.2- 171004 A77 0.5- 0.3- 171017 691 1.3- 0.5+ 171027 691 0.7+ 0.7- 171004 G40 0.5- 0.1- 171017 691 1.3- 1.0+ 171027 691 0.3+ 0.4- 171004 G40 1.2+ 0.2+ 171017 691 (2.0- 0.7+) 171027 691 0.7+ 0.7- 171004 850 1.2+ 0.1- 171017 K88 0.1+ 0.3+ 171116 Q21 0.1+ 0.5+ 171004 926 0.9- 0.9+ 171017 K88 0.4+ 0.0 171116 Q21 (1.4- 2.8-) 171004 850 0.2+ 0.3- 171017 K88 0.2+ 0.2- 171123 E85 (2.3+ 1.0-) 171004 926 0.3+ 0.1- 171018 585 0.0 0.6+ 171123 E85 0.2+ 0.3- 171004 850 0.9+ 0.3- 171018 585 0.2- 0.1- 171123 E85 0.8- 0.7+ 171004 926 0.2+ 0.2+ 171018 691 1.5- 0.1- 171124 W84 0.7+ 0.5- 171004 850 0.2+ 0.6- 171018 691 0.7- 0.2+ 171124 W84 0.6+ 0.4- 171011 691 1.6- 0.6+ 171018 691 0.4- 0.5+ 2018/ 171011 691 0.2- 0.4+ 171019 G40 0.5- 0.1+ 180117 W84 0.8+ 0.2- 171011 691 0.7- 0.8+ 171019 G40 0.2- 0.1- 180117 W84 0.9+ 0.2+ 171011 291 0.8- 0.3+ 171019 291 0.0 0.4+ 180117 W84 0.9+ 0.3- 171011 291 1.3- 0.2+ 171019 291 0.5- 0.3+ 180122 W84 0.7+ 0.2+ 171012 691 (2.0- 0.5+) 171019 291 0.4- 0.2+ 180122 W84 1.1+ 0.3+ 171012 691 (2.1- 0.8+) 171019 G96 1.6- 1.4+ 180122 W84 1.1+ 0.1- 171012 691 1.2- 0.3+ 171019 G96 0.6- 0.2+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2020 Aug. 8

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