Nakano Note (Nakano wa Kangaeru noda) NK 4064 P/2019 V2 (Groeller)
The following improved orbital elements, by S. Nakano, are from 56 observations 2019 Nov. 3 to 2020 Mar. 1. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.46 arc second. See an orbit in HICQ 2020. Epoch = 2020 Nov. 7.0 TT T = 2020 Oct. 19.98374 +/- 0.36163 (m.e.) TT Peri. = 336.02437 +/- 0.03974 Node = 189.18164 +/- 0.00134 (2000.0) Inc. = 11.80224 +/- 0.00021 q = 5.0208300 +/- 0.0004312 AU e = 0.3321309 +/- 0.0000866 a = 7.5176858 +/- 0.0011688 AU n' = 0.04781650 +/- 0.00001115 P = 20.612 +/- 0.0048069 years (+/- 1.76 days) The predicted orbit for the 2041 return is as follows: T = 2041 May 4.32035 TT Epoch = 2041 May 1.0 TT Peri. = 335.23910 e = 0.3354570 Node = 189.05945 (2000.0) a = 7.5759690 AU Inc. = 11.78214 n'= 0.04726578 q = 5.0345573 AU P = 20.852 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2019/ 191122 L01 0.6- 0.1- 200201 G96 0.3+ 0.1+ 191103 G96 0.0 0.5- 191122 L01 0.5- 0.0 200201 G96 0.4+ 0.1+ 191103 G96 0.3+ 0.5- 191123 V06 0.3+ 0.3- 200201 G96 0.2- 0.1+ 191103 G96 0.2+ 0.2- 191123 V06 0.4+ 0.1- 200214 L27 0.3- 0.5+ 191103 G96 0.8- 0.7- 191123 V06 0.4+ 0.1- 200214 L27 0.5- 0.5+ 191103 G96 0.5- 0.4+ 191124 I52 0.2- 0.3+ 200214 L27 0.5- 0.4+ 191103 G96 0.3- 0.0 191124 I52 1.0- 0.4+ 200215 157 0.3+ 0.2- 191103 G96 0.5- 0.1+ 191124 I52 0.4+ 0.1+ 200215 157 0.3+ 0.1+ 191104 G96 0.1+ 0.2+ 191125 K88 0.5+ 0.2- 200216 G96 0.2+ 0.0 191104 G96 0.0 0.0 191125 K88 0.8+ 0.2- 200216 G96 0.1+ 0.1+ 191104 G96 0.1- 0.1- 191129 Q62 0.3+ 0.1+ 200216 G96 0.1- 0.1+ 191104 G96 0.1+ 0.2+ 191129 Q62 0.4+ 0.3- 200216 G96 0.1+ 0.3+ 191108 G96 0.6+ 0.3- 2020/ 200227 G96 0.0 0.1+ 191108 G96 0.2- 0.2- 200103 213 0.4- 0.8+ 200227 G96 0.2- 0.1- 191108 G96 0.7+ 0.1- 200103 213 0.7+ 0.5+ 200227 G96 0.0 0.2+ 191108 G96 0.8- 0.5+ 200103 213 0.8+ 0.6+ 200227 G96 0.2- 0.2+ 191118 V00 0.3+ 0.1- 200105 213 0.0 0.1+ 200301 Q62 0.2- 1.3- 191118 V00 0.5+ 0.2- 200105 213 1.8- 0.2+ 200301 Q62 0.1- 1.1- 191122 L01 0.6- 0.3+ 200105 213 0.4+ 1.0- 191122 L01 0.8- 0.5+ 200201 G96 1.0+ 0.3- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2020 Mar. 15