Nakano Note (Nakano wa Kangaeru noda) NK 4933 P/2022 W1 (Rankin)

The following improved orbital elements, by S. Nakano, are from 102 observations 2022 Sept. 24 to 2023 Jan. 25. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.36 arc second. See an orbit in CBET 5196 and CH 2023. Epoch = 2022 Sept.18.0 TT T = 2022 Sept.15.65670 +/- 0.03241 (m.e.) TT Peri. = 17.77298 +/- 0.00648 Node = 38.81622 +/- 0.00055 (2000.0) Inc. = 13.46598 +/- 0.00024 q = 3.3677875 +/- 0.0000504 AU e = 0.5167909 +/- 0.0000229 a = 6.9696274 +/- 0.0003463 AU n' = 0.05356606 +/- 0.00000399 P = 18.400 +/- 0.0013714 years (+/- 0.50 day) The predicted orbit for the 2041 return is as follows: T = 2041 Jan. 15.00153 TT Epoch = 2041 Jan. 1.0 TT Peri. = 17.86153 e = 0.5161536 Node = 38.80174 (2000.0) a = 6.9324919 AU Inc. = 13.47446 n'= 0.05399705 q = 3.3542609 AU P = 18.253 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2022/ 221120 L06 0.8+ 0.4+ 221123 I81 0.7- 0.2- 220924 G96 0.3+ 0.2- 221120 B37 0.2- 0.4- 221123 I81 0.3+ 0.1+ 220924 G96 0.2- 0.0 221120 L06 0.1- 0.0 221124 I81 0.5- 0.4+ 220924 G96 0.1- 0.4+ 221120 B37 0.3- 0.3- 221124 215 0.6- 0.3- 220924 G96 0.2- 0.1+ 221120 L06 0.4+ 0.3- 221124 215 0.7- 0.7+ 221021 G96 0.2+ 0.1+ 221120 B37 0.1+ 0.9- 221125 V00 0.0 0.1- 221021 G96 0.3+ 0.1- 221120 B37 0.2- 0.6- 221125 V00 0.4+ 0.1+ 221021 G96 0.2+ 0.3- 221120 B37 0.0 0.4- 221125 V00 0.4+ 0.4+ 221021 G96 0.1+ 0.0 221120 W62 0.2+ 0.2- 221126 G96 0.0 0.0 221029 V00 0.3+ 0.0 221120 W62 0.2+ 0.1- 221126 G96 0.1- 0.3- 221029 V00 0.1+ 0.1- 221120 W62 0.5- 0.6+ 221126 G96 0.5+ 0.0 221029 V00 0.2+ 0.1+ 221120 I81 0.2- 0.1+ 221126 G96 0.0 0.3+ 221029 V00 0.3+ 0.0 221120 I81 0.0 0.2+ 221127 Q21 0.3- 0.9+ 221105 G96 0.2- 0.1+ 221120 I81 0.3+ 0.3+ 221127 Q21 (0.9- 2.2+) 221105 G96 0.4+ 0.0 221121 L01 0.8+ 0.3+ 221130 X03 0.4+ 0.2- 221105 G96 0.2- 0.1+ 221121 L01 0.5- 0.3+ 221130 X03 0.3+ 0.3- 221105 G96 0.3+ 0.2- 221121 L01 0.1+ 0.8+ 221130 X03 0.2+ 0.4- 221118 G96 0.0 0.2- 221121 L01 0.4+ 0.4+ 221202 Q62 0.5- 0.2- 221118 G96 0.4+ 0.0 221121 W62 0.0 0.0 221202 Q62 0.4- 0.1- 221118 G96 0.3+ 0.5+ 221121 W62 0.0 0.1+ 221215 F51 0.3+ 0.2+ 221118 G96 0.2+ 0.2+ 221121 W62 0.3+ 0.0 221215 F51 0.2+ 0.2+ 221118 G96 0.1+ 0.4- 221121 C97(0.04+ 0.05+) 221215 F51 0.2+ 0.1+ 221118 G96 0.0 0.2- 221121 C97(0.03+ 0.05+) 221216 G96 0.3- 0.2+ 221118 G96 0.7- 0.6+ 221121 G00 0.2+ 0.6+ 221216 G96 0.3+ 0.1- 221119 A77 (1.5+ 2.3+) 221121 G00 0.3+ 0.7+ 221216 G96 0.2- 0.2- 221119 204 0.4- 0.1+ 221121 G00 0.1- 0.2+ 221216 G96 0.1- 0.0 221119 A77 0.7- 0.5+ 221121 G00 0.9+ 0.3+ 221217 D29 0.4- 0.3- 221119 A77 0.5- 0.3+ 221121 950 0.5- 1.0+ 221217 D29 0.1- 0.1- 221119 204 0.1- 0.1+ 221121 950 0.3- 0.8+ 221217 D29 0.1- 0.3+ 221119 204 0.0 0.5+ 221122 I81 0.0 0.1- 2023/ 221119 I52 0.1- 0.3+ 221122 I81 1.2- 0.7- 230112 867 0.5- 0.5+ 221119 I52 0.4- 0.9+ 221122 I81 0.0 0.4- 230112 867 0.0 0.5+ 221119 I52 0.3+ 0.1- 221122 970 0.2+ 0.7- 230112 867 0.6- 0.6+ 221119 L06 0.3+ 0.1- 221122 970 0.1+ 0.1+ 230125 Q11 0.4+ 0.0 221119 B37 0.2- 0.2- 221123 104 0.1- 0.1- 230125 Q11 0.3+ 0.1- 221119 B37 0.2- 0.2- 221123 104 0.1- 0.2+ 230125 Q11 0.3+ 0.2- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2023 Jan. 30

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