Nakano Note (Nakano wa Kangaeru noda) NK 4021 A/2019 Q1
The following improved orbital elements, by S. Nakano, are from 116 observations 2019 Aug. 28 to Dec. 3. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.49 arc second. The object will pass 2.28 AU from Jupiter on 2021 Apr. 1 UT. Epoch = 2020 July 10.0 TT T = 2020 July 19.74181 +/- 0.06099 (m.e.) TT Peri. = 55.92968 +/- 0.00601 Node = 42.33776 +/- 0.00095 (2000.0) Inc. = 155.72155 +/- 0.00084 q = 4.9969362 +/- 0.0002356 AU e = 1.0009124 +/- 0.0002689 1/a = -0.0001826 +/- 0.0000538 1/AU origin = +0.000004 (Q= 6) future = -0.000102 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2019/ 190903 I52 0.3+ 0.1+ 191019 G96 0.1+ 0.0 190828 G96 0.1+ 0.1- 190903 H06 0.6+ 0.3+ 191019 G96 0.5+ 0.3- 190828 G96 0.1- 0.1- 190903 H06 0.1+ 0.1+ 191019 L01 0.2- 0.3- 190828 G96 0.3+ 0.2+ 190904 K87 0.7+ 1.1+ 191019 L01 0.1- 0.2- 190828 G96 0.2- 0.6- 190904 K87 0.7+ 0.6+ 191019 L01 0.2- 0.5- 190828 G96 0.3+ 0.0 190904 K87 1.2+ 1.3+ 191019 L01 0.4+ 0.2+ 190828 I52 0.5+ 0.8- 190904 711 0.1+ 1.3+ 191020 I52 0.3- 1.5+ 190828 G96 0.4+ 0.2- 190904 711 0.3+ 0.9+ 191020 I52 0.5+ 0.5- 190828 I52 0.3- 0.6- 190904 711 0.1+ 1.1+ 191020 I52 0.7- 0.8- 190828 G96 0.5+ 0.6- 190904 I52 0.4+ 0.1- 191023 461 0.2- 0.1+ 190828 G96 0.3+ 0.0 190904 I52 0.4+ 0.3- 191023 461 0.2- 0.3+ 190828 L01 0.1+ 0.5+ 190904 I52 0.0 0.0 191023 461 0.1- 0.2+ 190829 L01 0.2+ 0.4- 190904 I52 0.2+ 0.1- 191023 461 0.1+ 0.2+ 190829 L01 0.1- 0.4- 190905 711 0.4- 0.3+ 191024 G96 0.1- 0.0 190829 J04 0.2+ 0.3- 190905 711 0.3- 0.2+ 191024 G96 0.5+ 0.2+ 190829 J04 0.2+ 0.2- 190905 711 1.0+ 0.3- 191024 G96 0.2+ 0.2- 190829 J04 0.1- 0.3+ 190905 658 0.5+ 0.0 191024 G96 0.1+ 0.0 190829 J04 0.3- 0.2- 190905 658 0.1- 0.0 191029 C95 0.8+ 0.4+ 190829 J04 0.2- 0.1- 190905 658 0.1+ 0.2- 191029 C95 1.4+ 0.1- 190829 J04 0.1- 0.2+ 190905 658 0.5+ 0.1- 191029 C95 0.1+ 0.3- 190830 I52 0.2+ 0.3- 190905 658 0.1- 0.0 191102 850 0.2+ 0.1- 190830 I52 0.5- 0.3- 190905 K88 0.1+ 0.7+ 191102 850 0.0 0.1- 190830 I52 0.0 0.0 190905 K88 0.3- 0.4+ 191103 850 0.3- 0.6+ 190830 I52 0.5+ 0.1+ 190906 691 0.2+ 0.2+ 191103 850 0.2+ 0.7+ 190830 I93 0.6- 0.2+ 190906 691 0.3- 0.0 191103 850 0.5+ 0.4+ 190830 I93 0.0 0.8- 190906 691 0.2+ 0.1+ 191124 461 0.2+ 0.1+ 190830 I93 0.3+ 0.2- 190907 711 1.7- 0.1- 191124 461 0.6+ 0.7+ 190831 L51 1.3- 0.2- 190907 711 1.6- 0.2- 191124 461 0.1- 0.6+ 190901 L51 0.7+ 0.3- 190907 711 1.7- 0.2- 191128 568 0.0 0.0 190901 L51 1.6+ 0.6+ 190908 157 0.3- 0.0 191128 568 0.1- 0.1- 190902 H36 0.4+ 0.0 190908 157 0.1- 0.1+ 191128 568 0.1- 0.1- 190902 H36 0.5+ 0.3- 190930 461 1.0- 0.8+ 191128 568 0.1- 0.0 190902 H36 0.2+ 0.8- 190930 461 0.6- 0.4+ 191201 B74 0.6+ 0.8+ 190902 I52 0.2- 0.1- 190930 461 0.3- 0.5+ 191201 B74 0.6+ 0.3+ 190902 I52 1.1- 0.2- 191008 A77 0.1- 0.0 191201 B74 0.5+ 0.1- 190902 I52 0.6- 0.3+ 191008 A77 0.7- 0.0 191203 568 0.0 0.1- 190902 I52 0.1- 0.0 191008 A77 1.4- 0.0 191203 568 0.0 0.0 190903 I52 0.4+ 0.1+ 191019 G96 0.1- 0.0 191203 568 0.0 0.0 190903 I52 0.5+ 0.1+ 191019 G96 0.9+ 0.5- 191203 568 0.1+ 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2019 Dec. 30