Nakano Note (Nakano wa Kangaeru noda) NK 4565 C/2021 L3 (Borisov)

The following improved orbital elements, by S. Nakano, are from 136 observations 2021 June 8 to Oct. 24. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.50 arc second. See an orbit in CBET 4985. Epoch = 2022 Mar. 2.0 TT T = 2022 Feb. 13.70735 +/- 0.18405 (m.e.) TT Peri. = 91.59731 +/- 0.01052 Node = 344.96886 +/- 0.00105 (2000.0) Inc. = 78.57996 +/- 0.00015 q = 8.4576521 +/- 0.0002071 AU e = 1.0013971 +/- 0.0001140 1/a = -0.0001652 +/- 0.0000135 1/AU origin = +0.000102 (Q= 7) future = +0.000004 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2021/ 210612 H06 0.3+ 0.4+ 210622 204 0.1- 0.1- 210608 L51 0.9- 0.2- 210612 L51 0.0 0.1- 210622 204 0.3- 0.2- 210608 L51 0.2- 0.1+ 210612 L51 0.5- 0.5- 210622 H36 0.1+ 0.4+ 210608 L51 0.7- 0.6- 210612 L51 0.5- 0.4- 210622 H36 0.4+ 0.3- 210610 L51 0.8- 0.2- 210613 970 0.2+ 0.4+ 210622 H36 0.5- 0.3- 210610 L51 1.8- 1.3- 210613 B96 0.3- 0.0 210627 Z10 0.5+ 0.3+ 210610 L51 0.4- 0.9- 210613 970 0.8+ 0.3+ 210627 Z10 0.0 0.7+ 210610 L01 0.3- 0.6- 210613 B96 0.6- 0.2+ 210701 G40 0.4+ 0.2+ 210610 L51 1.0- 0.1+ 210613 B96 0.9- 0.5+ 210701 G40 0.3+ 0.6- 210610 L01 0.2- 0.3- 210613 J57 0.4+ 0.8+ 210701 L51 0.8- 0.4+ 210610 L01 0.8- 0.3- 210613 L51 0.2- 0.9- 210701 L51 0.6- 0.8+ 210610 L01 0.6- 0.1+ 210613 J57 0.8+ 0.1+ 210701 L51 0.6- 0.7+ 210611 095 0.2+ 0.3+ 210613 L51 0.1- 0.5- 210701 L51 0.8- 1.4+ 210611 095 0.2+ 0.3+ 210613 L51 0.0 0.0 210701 L51 (0.5- 2.2+) 210611 095 0.2+ 0.3+ 210613 587 0.0 0.1- 210705 215 0.3- 0.3- 210611 095 0.2+ 0.1+ 210613 A71 0.0 0.3+ 210705 215 0.1- 0.9+ 210611 095 0.3+ 0.1+ 210613 A71 0.5+ 1.5- 210705 215 0.5+ 0.8+ 210611 095 0.3+ 0.2+ 210613 A71 0.7+ 0.3- 210729 L51 0.2- 0.7- 210611 095 0.3+ 0.0 210613 J95 0.2- 0.2- 210729 L51 0.2- 0.1- 210611 095 0.1+ 0.2+ 210613 B96 0.4+ 0.4- 210729 L51 0.2- 0.0 210611 095 0.0 0.2+ 210614 J95 0.2+ 0.3- 210731 L59 0.2+ 0.8- 210611 095 0.1- 0.4+ 210614 587 0.4- 0.6- 210731 L59 0.2- 0.2- 210611 095 0.0 0.3+ 210614 B96 0.9+ 0.7+ 210731 L59 0.0 0.2- 210611 095 0.2+ 0.2+ 210614 B96 0.9- 0.6- 210731 L59 0.1+ 0.1+ 210611 095 0.2+ 0.2+ 210614 L27 0.5+ 0.6+ 210807 157 1.0+ 1.2- 210611 095 0.3+ 0.1+ 210614 L27 0.2+ 0.5+ 210807 157 0.3+ 0.5- 210611 095 0.1+ 0.2+ 210614 L27 0.3- 0.5+ 210807 157 0.6+ 1.0- 210611 L06 0.0 0.4- 210615 157 0.5- 0.2+ 210827 L51 (0.4- 3.7+) 210611 L51 0.3- 0.4+ 210615 157 0.1+ 0.2+ 210827 L51 0.4- 1.8+ 210611 L06 0.4+ 0.4- 210615 L27 0.1- 0.5+ 210827 L51 0.5+ 0.0 210611 L51 0.4+ 0.2- 210615 L27 0.0 0.1+ 210909 B18 0.3- 0.1+ 210611 L51 0.1- 0.4+ 210615 L27 0.0 0.1- 210909 B18 0.0 0.4+ 210611 L06 0.5+ 0.5- 210616 A71 0.4+ 0.7- 210909 B18 0.3- 0.5+ 210611 095 0.2+ 0.2+ 210616 A71 0.9+ 1.0- 210909 B18 0.3- 0.3+ 210611 095 0.2+ 0.2+ 210617 L02 0.9+ 0.7- 210909 B18 0.2- 0.2- 210611 095 0.0 0.5+ 210617 L02 0.2+ 0.9+ 210909 B18 0.3- 0.2+ 210611 095 0.1- 0.7+ 210618 W62 0.0 0.4- 210909 B18 0.2+ 0.2- 210611 B49 0.1+ 0.1- 210618 W62 0.1- 0.3+ 211009 A98 0.4+ 0.2+ 210612 095 0.5+ 0.0 210618 W62 1.3+ 0.6+ 211009 A98 0.6+ 0.6- 210612 095 0.4+ 0.1+ 210618 204 0.3- 0.3- 211009 A98 (2.3+ 2.3-) 210612 095 0.2+ 0.1+ 210619 204 0.3+ 0.0 211010 L27 0.4+ 0.2- 210612 B49 1.4+ 0.4- 210620 L51 0.7- 1.7+ 211010 L27 0.1+ 0.3- 210612 095 0.1+ 0.1- 210620 L51 0.5- 0.2+ 211024 F52 0.3- 0.2- 210612 204 0.2- 0.0 210620 L51 0.8- 1.5- 211024 F52 0.2- 0.1- 210612 204 0.3+ 0.2- 210620 J57 0.5+ 0.1+ 211024 F52 0.3- 0.0 210612 204 0.2+ 0.3- 210620 J57 0.0 0.2+ 211024 F52 0.1- 0.3+ 210612 H06 0.5+ 0.1+ 210620 J57 0.5- 0.6- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2021 Nov. 19

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