Nakano Note (Nakano wa Kangaeru noda) NK 4455 C/2020 K5 (PANSTARRS)

The following improved orbital elements, by S. Nakano, are from 67 observations 2020 Apr. 3 to 2021 Apr. 5. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.54 arc second. The comet has passed 3.73 AU from Jupiter on 2020 Dec. 30 UT. See the previous orbits in CBET 4785 and HICQ 2021. Epoch = 2021 May 26.0 TT T = 2021 June 5.56956 +/- 0.00035 (m.e.) TT Peri. = 249.58835 +/- 0.00031 Node = 86.16450 +/- 0.00009 (2000.0) Inc. = 67.15208 +/- 0.00011 q = 1.5356297 +/- 0.0000080 AU e = 1.0015362 +/- 0.0000047 1/a = -0.0010004 +/- 0.0000031 1/AU origin = +0.000052 (Q= 8) future = -0.000154 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2020/ 200526 204 0.3- 0.5+ 200813 G96 0.3- 0.1+ 200403 F51 0.5+ 0.1- 200526 L27 0.6+ 0.4+ 200813 568 0.3+ 0.0 200403 F51 0.4+ 0.2- 200526 568 0.5+ 0.1- 200813 568 0.2+ 0.1- 200403 F51 0.2- 0.1- 200526 568 0.6+ 0.1- 200814 F52 0.4+ 0.1+ 200403 F51 0.3+ 0.5- 200526 568 0.5+ 0.1- 200814 F52 0.2+ 0.1+ 200418 F52 0.5- 0.2- 200526 Z84 0.3- 0.4- 200814 F52 0.7- 0.4+ 200418 F52 0.7- 0.1+ 200526 Z84 0.6- 0.3+ 200814 F52 0.7- 0.2+ 200418 F52 0.3- 0.2- 200526 Z84 0.3- 0.0 200819 F52 0.3- 0.2- 200418 F52 0.0 0.0 200526 Z84 0.6- 0.1- 200819 F52 0.2+ 0.1+ 200518 F52 0.5- 0.4+ 200527 L01 0.2- 0.2- 200819 F52 0.2+ 0.2+ 200518 F52 0.7+ 0.2- 200528 L01 1.0- 0.7+ 200819 F52 0.1+ 0.3- 200518 F52 0.0 0.6+ 200528 L01 0.2+ 0.7+ 2021/ 200518 F52 0.0 0.2- 200528 L01 1.1- 0.3+ 210322 474 0.4+ 0.3- 200525 F51 0.2- 0.1+ 200611 215 0.2- 0.8+ 210322 474 0.3+ 0.3- 200525 F51 0.1+ 0.0 200611 215 0.3- 1.2+ 210322 474 0.4+ 0.3- 200525 F51 0.1+ 0.0 200611 215 0.7- 1.7+ 210403 Q62 0.3- 0.5- 200525 F51 0.0 0.1- 200714 G96 1.7- 0.2- 210403 Q62 0.1+ 0.2- 200525 118 0.5- 0.3+ 200714 G96 0.3- 0.5+ 210403 Q62 0.3- 0.3- 200525 118 1.5- 0.6- 200714 G96 1.4- 0.0 210403 Q62 0.4- 0.3- 200525 L27 1.1- 0.3+ 200714 G96 1.3- 0.3+ 210405 X03 1.4- 0.4- 200526 204 1.1- 0.7+ 200813 G96 0.6- 0.3+ 210405 X03 0.3+ 0.4+ 200526 L27 0.4- 0.4+ 200813 G96 0.4- 0.6+ 210405 X03 0.2+ 0.7+ 200526 L27 1.1- 0.9+ 200813 G96 0.5- 0.2+ 210405 X03 0.6+ 0.5+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2021 May 9

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