Nakano Note (Nakano wa Kangaeru noda) NK 4175 P/2019 X1 (Pruyne)
The following improved orbital elements, by S. Nakano, are from 105 observations 2019 Jan. 3 to 2020 May 5. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.41 arc second. Residuals of 2003 observations reported at code 568 (one night) are about 0.06 deg from this orbit. See the previous orbits in CBET 4702 and NK 4065. Epoch = 2019 July 16.0 TT T = 2019 July 22.30665 +/- 0.02045 (m.e.) TT Peri. = 36.91705 +/- 0.00253 Node = 43.72699 +/- 0.00014 (2000.0) Inc. = 10.24636 +/- 0.00003 q = 4.3055506 +/- 0.0000092 AU e = 0.3026471 +/- 0.0000085 a = 6.1741342 +/- 0.0000764 AU n' = 0.06424509 +/- 0.00000119 P = 15.341 +/- 0.0002847 years (+/- 0.10 day) The predicted orbit for the 2034 return is as follows: T = 2034 Dec. 12.54573 TT Epoch = 2034 Dec. 24.0 TT Peri. = 37.05329 e = 0.3026736 Node = 43.60685 (2000.0) a = 6.2041335 AU Inc. = 10.23355 n'= 0.06377969 q = 4.3263063 AU P = 15.453 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2019/ 191204 246 1.2- 0.0 191207 Q11 0.6+ 0.3+ 190103 F51 0.2- 0.1- 191204 246 1.6- 0.1- 191207 Q11 0.5+ 0.3+ 190103 F51 0.1+ 0.1+ 191204 246 (2.0- 0.6+) 191207 Q11 0.6+ 0.4+ 190103 F51 0.1- 0.1- 191205 K88 0.4+ 0.1+ 191210 J95 0.6- 0.5- 190103 F51 0.1+ 0.0 191205 K88 0.0 0.0 191210 J95 0.2- 0.2+ 191129 F51 0.5+ 0.0 191205 K87 0.9- 0.5- 191218 215 0.2- 0.1+ 191202 G96 0.2- 0.0 191205 K87 0.6- 0.5- 191218 215 0.1- 0.1+ 191202 G96 0.0 0.0 191205 K87 0.9- 0.5- 191218 215 0.1+ 0.1+ 191202 G96 0.2- 0.1- 191205 K87 0.5- 0.4- 191220 H06 0.2+ 0.0 191202 G96 0.3- 0.0 191205 K87 0.7- 0.1+ 191220 H06 0.5- 0.2+ 191203 I52 0.4- 0.3- 191205 K87 0.3- 0.2+ 191220 H06 0.6- 0.3+ 191203 I52 0.3- 0.2+ 191205 K87 0.9- 0.2- 191231 Q11 0.1- 0.2- 191203 I52 0.2- 0.0 191205 K63 0.4+ 0.4- 191231 Q11 0.2- 0.3- 191203 I52 0.3- 0.2+ 191205 K63 0.2+ 0.1- 191231 Q11 0.1- 0.2- 191203 F51 0.4+ 0.0 191205 K63 0.1- 0.4+ 2020/ 191203 F51 0.4+ 0.0 191205 850 (0.5- 2.1-) 200104 H06 0.7- 0.1- 191203 L01 0.1+ 0.2+ 191205 850 0.9- 0.3- 200104 H06 1.0- 0.0 191203 L01 0.1- 0.6- 191205 850 0.2+ 1.1- 200106 118 0.0 0.4- 191203 L01 0.3- 0.2- 191205 850 0.1+ 0.1- 200106 118 0.2- 0.3- 191203 L01 0.4- 0.1- 191205 T12 0.1+ 0.0 200106 118 0.1- 0.1- 191203 L01 0.1+ 0.1+ 191205 T12 0.1+ 0.1+ 200213 B74 0.1+ 0.1- 191203 L01 0.3- 0.4+ 191205 T12 0.2+ 0.0 200213 B74 0.1- 0.5- 191204 K88 0.1- 0.2+ 191205 K51 0.1+ 0.1- 200213 B74 0.2- 0.6- 191204 K88 0.0 0.4+ 191205 K51 0.1+ 0.1+ 200218 Q11 0.3+ 0.3- 191204 K88 0.1- 0.4+ 191205 K51 0.1- 0.2+ 200218 Q11 0.3+ 0.2- 191204 K61 0.9- 0.1- 191205 204 0.3- 0.7+ 200218 Q11 0.3+ 0.2- 191204 K61 0.3+ 0.4- 191205 246 0.6- 0.1+ 200224 215 0.1- 0.5+ 191204 K61 0.5- 0.7- 191205 246 0.0 0.9+ 200224 215 0.1- 0.4+ 191204 C10 0.7- 0.1- 191205 246 0.7- 0.7+ 200224 215 1.1- 0.5+ 191204 C10 0.2- 0.3+ 191205 204 0.1+ 0.0 200227 Q11 1.0+ 0.1- 191204 C10 0.7- 0.2- 191206 204 0.0 0.1+ 200227 Q11 0.9+ 0.1+ 191204 587 0.1- 0.2+ 191206 204 0.3- 0.1- 200505 G96 0.7+ 0.1- 191204 587 0.0 0.2+ 191206 B49 0.8+ 0.0 200505 G96 0.0 0.1- 191204 587 0.3- 0.2+ 191206 B49 0.2+ 1.0+ 200505 G96 0.0 0.2- 191204 595 0.3- 0.2- 191207 I52 0.5- 0.6+ 200505 G96 0.6- 0.4- 191204 595 0.6- 0.0 191207 I52 0.2+ 0.2- 191204 595 0.1- 0.9- 191207 I52 0.0 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2020 Aug. 10