Nakano Note (Nakano wa Kangaeru noda) NK 4523 C/2021 Q6 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 48 observations 2021 Jan. 2 to Sept. 7. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.18 arc second. The comet will pass 2.03 AU from Saturn on 2024 Aug. 24 UT. See an orbit in CBET 5032 (same orbit). Epoch = 2024 Mar. 31.0 TT T = 2024 Mar. 24.83612 +/- 0.08185 (m.e.) TT Peri. = 140.99738 +/- 0.01123 Node = 133.53668 +/- 0.00050 (2000.0) Inc. = 161.84654 +/- 0.00001 q = 8.7098434 +/- 0.0009528 AU e = 1.0005490 +/- 0.0002347 1/a = -0.0000630 +/- 0.0000269 1/AU origin = +0.000091 (Q= 7) future = +0.000055 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2021/ 210820 F51 0.1- 0.0 210825 F51 0.1- 0.1- 210102 F51 0.1- 0.0 210820 F51 0.0 0.1- 210903 G96 0.2+ 0.0 210103 F51 0.0 0.0 210820 F51 0.0 0.1+ 210903 G96 0.3+ 0.1+ 210109 F51 0.1- 0.2+ 210820 F51 0.3+ 0.1- 210903 G96 0.1+ 0.3+ 210109 F51 0.1- 0.1+ 210822 F51 0.2- 0.3+ 210903 G96 0.0 0.4- 210109 F51 0.0 0.0 210822 F51 0.3- 0.1- 210903 568 0.1- 0.0 210109 F51 0.1- 0.0 210822 F51 0.1- 0.0 210903 568 0.1- 0.0 210130 F51 0.0 0.2+ 210822 F51 0.1- 0.0 210903 568 0.1- 0.0 210131 F51 0.0 0.5- 210823 F51 0.0 0.0 210905 F51 0.2+ 0.1+ 210131 F51 0.5+ 0.0 210823 F51 0.1- 0.0 210905 F51 0.2- 0.0 210728 F51 0.1+ 0.0 210823 F51 0.0 0.1- 210905 F51 0.2+ 0.3- 210728 F51 0.2+ 0.1+ 210823 F51 0.2+ 0.0 210905 F51 0.1- 0.1- 210819 F51 0.0 0.1- 210823 F51 0.5+ 0.2+ 210907 L01 0.6+ 0.4+ 210819 F51 0.1- 0.1+ 210824 F51 0.1- 0.1+ 210907 L01 0.2+ 0.6- 210819 F51 0.1- 0.1+ 210824 F51 0.1+ 0.2+ 210907 L01 0.2+ 0.2- 210819 F51 0.0 0.2- 210824 F51 0.0 0.0 210820 F51 0.1+ 0.3+ 210825 F51 0.1- 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2021 Sept. 9