Nakano Note (Nakano wa Kangaeru noda) NK 5163 P/2023 Y2 (Gibbs)
The following improved orbital elements, by S. Nakano, are from 56 observations 2022 Oct. 23 to 2024 Jan. 12. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.56 arc second. The comet has passed 0.030 AU from Jupiter on 1973 January and 0.15 AU from Jupiter on 2020 Feb. 28 UT. 2022 observations show the resiual of -0.19 deg and -0.09 deg from an orbit on 2023/2024. See an orbit in CBET 5329 (same orbit). Epoch = 2023 Aug. 4.0 TT T = 2023 Aug. 9.79773 +/- 0.00303 (m.e.) TT Peri. = 16.78813 +/- 0.00083 Node = 79.23106 +/- 0.00033 (2000.0) Inc. = 6.99276 +/- 0.00003 q = 2.2758828 +/- 0.0000029 AU e = 0.3920926 +/- 0.0000249 a = 3.7437986 +/- 0.0001533 AU n' = 0.13606153 +/- 0.00000836 P = 7.244 +/- 0.0004451 years (+/- 0.16 day) The predicted orbit for the 2030 return is as follows: T = 2030 Nov. 13.66151 TT Epoch = 2030 Oct. 26.0 TT Peri. = 16.91369 e = 0.3907447 Node = 79.19469 (2000.0) a = 3.7525572 AU Inc. = 6.98616 n'= 0.13558545 q = 2.2862654 AU P = 7.269 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2022/ 231217 F52 0.2+ 0.1+ 240106 M45 (2.6+ 0.3-) 221023 F52 0.1+ 0.0 231217 F52 0.2+ 0.0 240106 M45 (0.2+ 2.4-) 221023 F52 0.1- 0.2- 231217 F52 0.3+ 0.1- 240106 M45 0.0 0.1- 221023 F52 0.2+ 0.3- 231217 Q62 0.6- 0.2+ 240107 X03 1.1- 0.1+ 221220 G96 0.3+ 0.1+ 231217 Q62 0.1- 0.1+ 240107 X03 0.1- 0.8+ 221220 G96 0.0 0.0 231218 G00 0.7+ 0.1+ 240107 X03 (2.6- 1.0+) 221220 G96 0.0 0.0 231218 L01 0.1- 0.1+ 240107 X03 (2.6+ 0.4+) 221220 G96 0.2- 0.0 231218 G00 0.0 1.0+ 240109 L38 0.1- 0.8- 2023/ 231218 I81 0.0 0.6+ 240110 L38 0.0 0.3- 231213 F51 0.6+ 0.0 231218 I81 0.9- 0.8+ 240110 G01 0.5- 1.4- 231213 F51 0.4+ 0.0 231218 L01 0.0 0.3+ 240110 M49 1.0+ 0.8- 231213 F51 0.0 0.3+ 231218 L01 0.1+ 0.2+ 240110 M49 0.3+ 0.9+ 231213 F51 0.4+ 0.2+ 231218 I81 0.8- 0.8+ 240110 G01 0.4+ 1.1- 231217 G96 0.2+ 0.2- 231218 L01 0.5- 0.2+ 240110 M49 0.1+ 1.2+ 231217 G96 0.6+ 0.0 231220 W62 0.5- 1.4+ 240110 G01 (0.9- 3.5-) 231217 G96 0.5+ 0.4- 231220 W62 0.5- 1.4+ 240111 Q11 0.5+ 0.0 231217 G96 0.1- 0.1- 231220 W62 0.7- 1.5+ 240111 Q11 0.5+ 0.1- 231217 I52 0.3+ 0.2- 231221 P87 1.3- 0.0 240112 L06 0.3- 0.5+ 231217 I52 0.8- 0.2+ 231221 P87 1.9- 0.3+ 240112 L06 0.3+ 0.5+ 231217 I52 0.1- 0.5+ 2024/ 240112 L06 0.7+ 0.6+ 231217 I52 0.7- 0.2+ 240104 204 0.1- 0.5+ 231217 F52 0.1+ 0.1+ 240104 204 0.4- 0.5+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2024 Jan. 14