Nakano Note (Nakano wa Kangaeru noda) NK 4453 P/2019 V2 (Groeller)
The following improved orbital elements, by S. Nakano, are from 81 observations 2019 Nov. 3 to 2021 Apr. 6. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.38 arc second. See the previous orbit in NK 4064 (= HICQ 2021). Epoch = 2020 Nov. 7.0 TT T = 2020 Oct. 20.05971 +/- 0.03668 (m.e.) TT Peri. = 336.03300 +/- 0.00361 Node = 189.18166 +/- 0.00007 (2000.0) Inc. = 11.80222 +/- 0.00003 q = 5.0206744 +/- 0.0000100 AU e = 0.3321505 +/- 0.0000107 a = 7.5176737 +/- 0.0001218 AU n' = 0.04781662 +/- 0.00000116 P = 20.612 +/- 0.0005007 years (+/- 0.18 day) The predicted orbit for the 2041 return is as follows: T = 2041 May 4.37165 TT Epoch = 2041 May 1.0 TT Peri. = 335.24766 e = 0.3354765 Node = 189.05944 (2000.0) a = 7.5759601 AU Inc. = 11.78212 n'= 0.04726586 q = 5.0344033 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/ 191125 K88 0.5+ 0.1- 200227 G96 0.2- 0.0 191103 G96 0.0 0.6- 191125 K88 0.8+ 0.2- 200227 G96 0.0 0.2+ 191103 G96 0.4+ 0.5- 191129 Q62 0.3+ 0.1+ 200227 G96 0.2- 0.2+ 191103 G96 0.3+ 0.2- 191129 Q62 0.4+ 0.2- 200301 Q62 0.2- 1.3- 191103 G96 0.7- 0.7- 2020/ 200301 Q62 0.1- 1.0- 191103 G96 0.4- 0.4+ 200103 213 0.5- 0.9+ 200315 G96 0.1+ 0.0 191103 G96 0.3- 0.0 200103 213 0.5+ 0.6+ 200315 G96 0.2- 0.1+ 191103 G96 0.4- 0.1+ 200103 213 0.7+ 0.7+ 200315 G96 0.0 0.2- 191104 G96 0.1+ 0.1+ 200105 213 0.2- 0.2+ 200315 G96 0.1- 0.0 191104 G96 0.0 0.1- 200105 213 1.9- 0.2+ 2021/ 191104 G96 0.1- 0.1- 200105 213 0.2+ 1.0- 210315 F52 0.0 0.4- 191104 G96 0.2+ 0.2+ 200117 215 0.9+ 0.5- 210315 F52 0.1- 0.1- 191108 G96 0.7+ 0.4- 200117 215 0.6+ 0.5- 210315 F52 0.1+ 0.0 191108 G96 0.1- 0.3- 200117 215 0.7+ 0.3- 210315 F52 0.2+ 0.0 191108 G96 0.8+ 0.1- 200201 G96 0.9+ 0.2- 210317 J04 0.1+ 0.6+ 191108 G96 0.7- 0.4+ 200201 G96 0.2+ 0.2+ 210317 J04 1.2- 0.5+ 191118 V00 0.3+ 0.1- 200201 G96 0.3+ 0.2+ 210317 J04 0.5+ 0.3+ 191118 V00 0.5+ 0.2- 200201 G96 0.4- 0.1+ 210317 J04 0.2- 0.2+ 191122 L01 0.6- 0.3+ 200214 L27 0.4- 0.6+ 210403 G96 0.4- 0.2- 191122 L01 0.8- 0.5+ 200214 L27 0.6- 0.5+ 210403 G96 0.2+ 0.1+ 191122 L01 0.6- 0.1- 200214 L27 0.6- 0.4+ 210403 G96 0.3- 0.6+ 191122 L01 0.5- 0.0 200215 157 0.2+ 0.2- 210403 G96 0.6+ 0.3+ 191123 V06 0.3+ 0.3- 200215 157 0.2+ 0.2+ 210404 Q62 0.3+ 0.0 191123 V06 0.4+ 0.1- 200216 G96 0.1+ 0.0 210404 Q62 0.5+ 0.2- 191123 V06 0.3+ 0.1- 200216 G96 0.0 0.2+ 210406 F51 0.1- 0.0 191124 I52 0.2- 0.3+ 200216 G96 0.2- 0.2+ 210406 F51 0.0 0.0 191124 I52 1.1- 0.4+ 200216 G96 0.0 0.3+ 210406 F51 0.1+ 0.1- 191124 I52 0.3+ 0.1+ 200227 G96 0.0 0.2+ 210406 F51 0.1- 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2021 May 9