Nakano Note (Nakano wa Kangaeru noda) NK 4063 C/2019 V1 (Borisov)

The following improved orbital elements, by S. Nakano, are from 99 observations 2019 Nov. 1 to 2020 Feb. 26. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.71 arc second. See an orbit in HICQ 2020. Epoch = 2020 July 10.0 TT T = 2020 July 16.57802 +/- 0.00552 (m.e.) TT Peri. = 51.20394 +/- 0.00262 Node = 83.20556 +/- 0.00010 (2000.0) Inc. = 61.86303 +/- 0.00157 q = 3.0970561 +/- 0.0001042 AU e = 0.9987044 +/- 0.0000543 1/a = +0.0004183 +/- 0.0000175 1/AU origin = +0.000264 (Q= 7) future = +0.000464 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2019/ 191105 L51 0.1- 0.1- 191201 H45 (2.0+ 1.6+) 191101 L51 1.6+ 1.3- 191106 850 0.7+ 1.9+ 191201 H45 (2.7+ 0.6+) 191102 L51 0.3+ 1.0- 191106 850 0.5- 0.1- 191206 215 1.3- 1.6+ 191102 L51 (0.1+ 2.0+) 191106 850 0.5- 1.0+ 191206 215 0.7- 0.6+ 191102 L51 0.8- 0.4+ 191106 850 0.0 0.8+ 191206 215 0.1- 0.3+ 191102 L51 1.0+ 1.0- 191106 Q11 0.6- 0.2+ 191207 L27 1.5+ 0.4- 191102 L51 0.8- 0.8- 191106 Q11 0.4- 0.2+ 191207 L27 0.1- 0.1+ 191102 L51 0.8+ 0.3- 191106 Q11 0.6- 0.2+ 191222 I81 1.4- 0.8- 191103 I47 0.2- 0.8+ 191107 B96 0.0 0.7- 191222 I81 0.1+ 1.3+ 191103 I47 1.0- 0.7+ 191108 B96 0.3- 1.4+ 191222 I81 0.9- 1.2+ 191103 I47 1.4- 0.4- 191108 B96 0.7- 1.4+ 191228 Q11 1.3+ 0.3- 191103 850 0.3- 0.1- 191108 970 (2.7- 2.3-) 191228 Q11 1.4+ 0.2- 191103 850 0.2+ 0.5- 191108 970 0.3- 0.7+ 191228 Q11 1.2+ 0.2- 191103 850 0.4- 0.4- 191108 970 0.2+ 0.6+ 191229 A77 0.1+ 1.1+ 191103 850 0.2+ 0.7- 191108 W76 1.9- 0.1- 191229 A77 0.4- 0.6+ 191103 Q11 0.2+ 0.3+ 191108 W76 0.5- 0.7+ 191229 461 0.6+ 0.6+ 191103 Q11 0.2- 0.2+ 191108 W76 (0.2- 2.0+) 191229 461 0.3+ 0.3+ 191103 Q11 0.1+ 0.2+ 191125 461 0.0 0.3- 191229 461 0.0 0.3+ 191104 C95 1.3+ 1.4- 191125 461 0.1- 0.3+ 191230 130 1.5- 0.1+ 191104 C95 1.5+ 0.0 191126 A77 1.0- 1.3+ 191230 130 0.5+ 0.1- 191104 C95 0.7+ 0.6+ 191126 A77 1.0- 1.0+ 2020/ 191104 A77 (2.1- 0.6+) 191126 D95 1.0+ 0.0 200104 G96 0.7- 0.8+ 191104 A77 0.7- 0.5+ 191126 D95 0.2+ 0.4- 200104 G96 0.2- 0.1+ 191104 A77 (3.1- 0.5-) 191127 G40 0.6+ 0.3+ 200104 G96 0.4+ 0.4+ 191104 H06 0.0 0.3+ 191127 G40 0.2- 0.4+ 200104 G96 0.3+ 0.2+ 191104 H06 0.5- 0.5+ 191127 G40 0.0 0.6+ 200106 118 1.6- 0.1+ 191104 Q11 0.0 0.4+ 191128 568 0.1+ 0.6- 200106 118 0.6+ 0.3- 191104 Q11 0.2+ 0.5+ 191128 568 0.1+ 0.6- 200120 Q11 0.1- 1.0+ 191104 Q11 0.1+ 0.5+ 191128 568 0.1+ 0.6- 200120 Q11 0.2- 1.0+ 191105 H06 0.6+ 0.6- 191129 204 0.8+ 1.4+ 200129 A77 (0.9+ 2.8-) 191105 H06 0.5+ 0.2- 191129 204 0.1- 0.1- 200129 A77 0.8+ 0.2- 191105 H06 0.4+ 0.1- 191129 Q11 0.5- 0.1+ 200129 A77 1.1+ 0.3+ 191105 Q11 0.3- 0.1+ 191129 Q11 0.3- 0.1- 200218 A77 0.0 1.5+ 191105 Q11 0.1- 0.2+ 191129 Q11 0.3- 0.0 200218 A77 1.0- 0.9+ 191105 Q11 0.3- 0.3+ 191130 K77 (2.0+ 1.4+) 200218 A77 0.1- 0.4- 191105 L51 1.1- 1.6- 191130 K77 0.2- 0.7+ 200226 568 0.0 0.2- 191105 L51 1.0+ 0.7+ 191201 H45 (1.2+ 2.4+) 200226 568 0.1- 0.3- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2020 Mar. 15

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