Nakano Note (Nakano wa Kangaeru noda) NK 4868 P/2021 J3 (ATLAS)

The following improved orbital elements, by S. Nakano, are from 138 observations 2021 May 13 to Sept. 9. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.46 arc second. See the previous orbits in CBET 4974 and NK 4513. Epoch = 2019 June 6.0 TT T = 2019 June 17.03258 +/- 0.07148 (m.e.) TT Peri. = 123.82715 +/- 0.00343 Node = 111.32923 +/- 0.00071 (2000.0) Inc. = 14.59146 +/- 0.00059 q = 4.8770625 +/- 0.0004350 AU e = 0.4363212 +/- 0.0001485 a = 8.6522020 +/- 0.0024072 AU n' = 0.03872702 +/- 0.00001616 P = 25.450 +/- 0.0106209 years (+/- 3.88 days) The predicted orbit for the 2045 return is as follows: T = 2045 Nov. 19.79635 TT Epoch = 2045 Dec. 6.0 TT Peri. = 125.86356 e = 0.4481948 Node = 110.46634 (2000.0) a = 8.8465739 AU Inc. = 14.53187 n'= 0.03745773 q = 4.8815858 AU P = 26.313 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2021/ 210603 G40 0.1+ 0.3- 210720 T08 0.2- 0.5+ 210513 T08 0.4- 0.1- 210604 A77 0.1+ 0.6+ 210720 T08 0.8- 0.3+ 210513 T08 0.1+ 0.3+ 210604 A77 0.1- 1.1+ 210720 T08 0.6- 0.4+ 210513 T08 0.1- 0.1- 210607 Q11 0.0 0.8+ 210730 T05 0.1- 0.5- 210513 T08 0.4+ 0.9- 210607 Q11 0.1+ 0.9+ 210730 T05 0.1+ 0.5- 210514 J04 0.2- 0.0 210607 Q11 0.1+ 0.8+ 210730 T05 0.3+ 0.8- 210514 J04 0.5- 0.6- 210608 Q11 0.0 0.4+ 210730 T05 0.3- 0.5+ 210514 J04 0.0 0.1- 210608 Q11 0.3- 0.3+ 210730 T05 0.8+ 0.3+ 210514 807 0.2+ 0.2- 210608 Q11 0.2- 0.4+ 210730 T05 0.5+ 0.6+ 210514 807 0.1+ 0.2- 210611 F51 0.4+ 0.3+ 210802 L27 1.9+ 0.5+ 210514 I52 0.8- 0.3- 210611 F51 0.1- 0.2- 210802 L27 0.2+ 0.6+ 210514 807 0.0 0.2- 210611 F51 0.4+ 0.3+ 210805 T08 0.8- 0.4+ 210514 I52 0.0 0.5- 210611 F51 0.1- 0.2- 210805 T08 0.1- 0.8+ 210514 I52 0.7+ 0.5- 210612 T05 0.6+ 0.3- 210805 T08 1.0- 0.1- 210514 F51 0.0 0.0 210612 T05 0.8+ 0.0 210805 T08 0.3+ 0.6- 210514 F51 0.1+ 0.1- 210612 T05 0.1- 0.8- 210805 T08 0.2+ 1.1- 210514 F51 0.0 0.1- 210614 215 0.4- 0.1+ 210806 X03 0.2+ 0.2+ 210514 F51 0.2+ 0.1- 210614 215 0.1- 0.2- 210806 X03 0.1+ 0.1+ 210515 T12 0.1- 0.1- 210614 215 (2.3+ 0.1-) 210806 X03 0.1+ 0.3- 210515 T12 0.0 0.1- 210614 T08 0.4+ 0.4+ 210807 T05 0.1+ 0.2- 210515 T12 0.1+ 0.0 210614 T08 0.3+ 0.1- 210807 T05 0.0 0.0 210515 T12 0.1+ 0.0 210614 T08 0.4+ 0.1+ 210807 T05 0.5- 0.5- 210516 I52 0.7- 0.0 210614 T08 1.3- 1.3+ 210807 T05 0.2+ 1.0+ 210516 I52 0.3+ 0.1- 210615 L27 0.0 0.3+ 210813 T08 0.1- 0.1- 210516 I52 0.5+ 0.7- 210615 L27 0.1+ 0.3+ 210813 T08 0.3- 0.4- 210516 I52 0.2- 0.1+ 210615 L27 0.0 0.3+ 210813 T08 0.0 0.0 210518 E94 0.0 0.4+ 210620 T05 0.5+ 0.6- 210813 T08 0.2+ 0.4+ 210518 E94 0.2- 0.0 210620 T05 0.3- 0.2- 210815 T05 0.3+ 0.4+ 210518 E94 0.1- 0.0 210620 T05 0.0 0.3+ 210815 T05 1.3- 0.4+ 210518 E94 0.0 0.3+ 210620 T05 (3.4- 3.4+) 210815 T05 0.2- 1.8- 210518 Q62 0.4+ 0.3- 210704 T08 1.6- 0.9- 210815 T05 1.0- 0.1+ 210518 Q62 0.3+ 0.1- 210704 T08 0.0 0.1+ 210815 E94 0.5- 0.4- 210519 Y00 0.1+ 0.3- 210704 T08 1.4- 0.5- 210815 E94 0.0 0.3+ 210519 Y00 0.3- 0.6- 210704 T08 0.4- 0.4- 210815 E94 0.1- 0.6+ 210519 Y00 0.0 0.3- 210704 T08 0.5+ 0.1+ 210828 F51 0.2+ 0.1- 210526 L81 0.1+ 0.0 210704 T08 0.2- 0.3+ 210828 F51 0.3- 0.2- 210526 L81 0.3+ 0.2- 210704 T08 0.4- 0.5+ 210828 F51 0.1+ 0.0 210526 L81 0.2+ 0.1+ 210704 T08 0.7+ 0.2+ 210828 F51 0.1- 0.1- 210602 G40 0.1- 0.4+ 210713 F51 0.2+ 0.1+ 210904 B74 0.7+ 0.4- 210602 G40 0.5- 0.0 210713 F51 0.3+ 0.2+ 210904 B74 1.1+ 0.2+ 210602 691 0.3- 0.7+ 210713 F51 0.3+ 0.1+ 210904 B74 1.6+ 0.2- 210602 691 0.1- 0.4+ 210713 F51 0.2+ 0.1+ 210907 F51 0.3+ 0.1- 210602 T08 0.2+ 0.3- 210716 T08 0.4- 0.5- 210907 F51 0.1+ 0.1+ 210602 T08 0.0 0.2- 210716 T08 0.0 0.2+ 210907 F51 0.4- 0.1+ 210602 T08 0.4+ 0.2- 210716 T08 0.3- 0.3- 210909 Q11 0.3- 0.2- 210602 T08 0.7+ 0.6- 210716 T08 0.1+ 0.3+ 210909 Q11 0.2- 0.3- 210603 G40 0.3- 0.2+ 210720 T08 0.2+ 0.3- 210909 Q11 0.1- 0.3- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2022 Dec. 11

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