Nakano Note (Nakano wa Kangaeru noda) NK 4920 P/2022 P2 (ZTF)
The following improved orbital elements, by S. Nakano, are from 113 observations 2022 Aug. 15 to 2023 Jan. 19. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.62 arc second. 2023 January observations show the residuals of about -20" for mainly Right Ascension from an orbit in NK 4890. See the previous orbits in CBET 5165 and NK 4890. Epoch = 2022 June 30.0 TT T = 2022 July 10.77594 +/- 0.00277 (m.e.) TT Peri. = 137.58564 +/- 0.00128 Node = 291.23111 +/- 0.00012 (2000.0) Inc. = 12.44325 +/- 0.00005 q = 1.9822821 +/- 0.0000163 AU e = 0.5579465 +/- 0.0000341 a = 4.4842581 +/- 0.0003481 AU n' = 0.10379302 +/- 0.00001208 P = 9.496 +/- 0.0011056 years (+/- 0.40 day) The predicted orbit for the 2032 return is as follows: T = 2032 Jan. 21.30432 TT Epoch = 2032 Jan. 9.0 TT Peri. = 137.68003 e = 0.5568981 Node = 291.20122 (2000.0) a = 4.5052479 AU Inc. = 12.42728 n'= 0.10306852 q = 1.9962839 AU P = 9.563 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2022/ 220825 L01 0.2- 0.1+ 220928 970 0.1- 0.8- 220815 I41 0.2+ 0.1+ 220825 L01 0.2- 0.3- 220929 A77 0.6- 1.0- 220815 I41 0.3+ 0.3- 220825 L01 0.1- 1.0- 220929 A77 0.1+ 1.0- 220815 I41 0.0 0.1+ 220826 A77 0.5+ 1.3+ 220929 A77 (3.2- 1.2+) 220815 I41 0.0 0.2- 220826 A77 0.3- 1.3+ 221002 G00 (5.0- 2.1+) 220816 I41 0.2+ 0.1- 220826 A77 0.6- 1.0+ 221002 G00 (6.3- 2.4+) 220816 I41 0.2+ 0.4- 220826 T05 (2.2- 0.4+) 221002 G00 (4.2- 2.0+) 220816 I41 0.3+ 0.1+ 220826 T05 (2.6- 0.7+) 221021 703 (8.8- 3.8+) 220817 I41 0.4+ 0.1- 220826 T05 (2.8- 1.1+) 221021 703 (4.4- 1.2+) 220817 I41 0.1- 0.4- 220827 K83 0.1+ 0.4+ 221021 703 (4.6- 0.6-) 220817 I41 0.5+ 0.1+ 220827 K83 0.0 0.1+ 221023 Q11 0.7+ 0.2+ 220817 I41 0.0 0.5- 220827 K83 0.2- 0.1- 221023 Q11 0.7+ 0.2+ 220817 I41 0.6+ 0.0 220829 K74 0.9+ 0.2+ 221026 D95 (1.2- 2.7+) 220818 I41 0.2- 0.3+ 220829 K74 0.1+ 0.8+ 221026 D95 0.8- 1.0+ 220818 I41 0.1- 0.5+ 220831 585 1.4- 0.8+ 221026 D95 0.6- 0.4- 220818 I41 0.0 0.6- 220831 585 0.2- 1.2+ 221103 X03 0.1+ 0.2- 220818 I41 0.2- 0.2+ 220831 585 1.0- 0.7+ 221103 X03 0.1- 0.3- 220818 I41 0.6+ 0.4+ 220831 585 (2.1- 1.2+) 221103 X03 1.8- 1.0- 220819 I41 0.6- 0.0 220831 585 1.3- 1.1+ 221125 G00 0.0 0.3- 220819 I41 1.1- 0.0 220831 G00 0.9- 0.2- 221125 G00 1.1- 0.4+ 220819 U69 0.1+ 0.3+ 220831 G00 0.5- 0.2- 221125 G00 0.5- 0.4+ 220819 I41 1.1- 0.1- 220831 G00 0.7- 0.1+ 221126 Q11 0.2+ 0.5- 220819 U69 0.0 0.3+ 220831 G00 0.2- 0.4+ 221126 Q11 0.5+ 0.4- 220819 I41 (2.3- 0.3-) 220831 349 1.4- 0.5+ 221126 Q11 0.5+ 0.5- 220820 204 0.5- 0.2- 220831 349 1.8- 0.0 221130 G96 0.4- 0.2+ 220820 204 1.4- 0.2+ 220901 A77 0.4- 0.5+ 221130 G96 0.2+ 0.5- 220820 L06 0.4+ 0.7+ 220901 A77 0.6- 0.4- 221130 G96 0.5+ 1.5- 220820 L06 0.3+ 0.8+ 220901 A77 0.6+ 0.5- 221130 G96 0.4+ 0.1- 220820 L06 0.4+ 0.5+ 220902 215 0.2+ 1.4+ 221219 213 0.4- 0.1+ 220820 L06 0.1+ 0.8+ 220902 215 1.7- 0.0 221219 213 0.7+ 1.7+ 220820 950 (2.1- 0.6+) 220903 G00 0.9- 0.4+ 221220 Q62 0.3- 0.1+ 220820 950 (2.1- 0.3+) 220903 G00 1.4- 0.2+ 221220 Q62 (1.0+ 2.2-) 220820 950 1.7- 1.0+ 220903 G00 0.6- 0.3+ 2023/ 220821 L51 1.3- 0.2- 220903 G00 0.6- 0.5+ 230104 349 (2.1+ 0.9-) 220821 L51 0.3- 0.2+ 220903 G00 0.2- 0.2+ 230104 349 1.5+ 0.1- 220821 L51 0.2+ 0.1+ 220905 H06 0.5- 0.4+ 230114 G96 0.2+ 0.0 220823 Z28 0.6- 0.1- 220905 H06 0.7- 0.3+ 230114 G96 0.7- 0.4+ 220823 Z28 0.6- 0.4- 220908 A77 0.2- 0.2+ 230114 G96 0.2- 0.1- 220824 L06 0.3- 0.4+ 220908 A77 0.6- 0.3+ 230114 G96 0.6- 0.2+ 220824 L06 0.2- 0.0 220908 A77 0.7- 0.7- 230118 F52 0.4+ 0.3- 220824 L06 0.5- 0.3+ 220912 A77 0.2- 0.5+ 230118 F52 0.3+ 0.2- 220824 L06 0.3- 0.3+ 220912 A77 0.8- 1.5+ 230118 F52 0.2+ 0.1+ 220824 G40 (2.0- 1.0+) 220919 703 (2.9- 0.9-) 230118 F52 0.3+ 0.3- 220824 G40 (2.3- 0.3+) 220919 703 (2.5- 0.7-) 230119 D29 1.3- 0.3+ 220825 L01 0.5+ 0.3- 220919 703 (4.0- 1.8-) 230119 D29 1.6- 0.6+ 220825 L01 0.5+ 0.4- 220928 970 0.2+ 0.2- 230119 D29 (3.2- 0.6+) ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2023 Jan. 29