Nakano Note (Nakano wa Kangaeru noda) NK 5407 P/NEAT (2003 QX29 = 2025 H1)
The following improved orbital elements, by S. Nakano, are from 125 observations 2002 to 2025. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.60 arc second. Residuals for the recovery observations were +17'.4 for Right Ascension and +7'.0 for Declination from the prediction in NK 1112 (= from an orbit in HICQ 2004 and CH 2025) with the delta-T correction = -2.25 days. The comet will pass 1.59 AU from Saturn on 2032 Apr. 10 UT. See the previous orbits in YC 2402, NK 1112 (= CH 2025) and CBET 5547 (same orbit). Epoch = 2025 July 24.0 TT T = 2025 Aug. 5.07573 +/- 0.00197 (m.e.) TT Peri. = 37.73967 +/- 0.00030 Node = 264.48500 +/- 0.00011 (2000.0) Inc. = 11.39966 +/- 0.00003 q = 4.2295020 +/- 0.0000041 AU e = 0.4711490 +/- 0.0000005 a = 7.9975302 +/- 0.0000105 AU n' = 0.04357830 +/- 0.00000009 P = 22.617 +/- 0.0000446 years T = 2002 Oct. 27.20171 TT Epoch = 2002 Oct. 13.0 TT Peri. = 37.34641 e = 0.4715670 Node = 264.59035 (2000.0) a = 8.0235859 AU Inc. = 11.39705 n'= 0.04336619 q = 4.2399277 AU P = 22.728 years The predicted orbit for the 2047 return is as follows: T = 2047 Nov. 30.97708 TT Epoch = 2047 Nov. 26.0 TT Peri. = 37.01165 e = 0.4703144 Node = 264.04368 (2000.0) a = 7.9203005 AU Inc. = 11.47389 n'= 0.04421724 q = 4.1952693 AU P = 22.290 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2002/ 030831 807 0.1+ 0.2+ 031009 170 0.9+ 0.3- 020611 644 0.5+ 1.4+ 030831 807 0.4- 1.0+ 031009 170 1.1+ 0.8- 020611 644 0.6- 0.8+ 030831 807 0.0 1.0+ 031009 170 0.9+ 0.5- 020611 644 0.6- 0.4+ 030831 807 0.0 0.5+ 031017 360 0.3+ 0.7+ 2003/ 030901 673 0.6+ 0.1- 031017 360 0.6+ 0.4+ 030823 644 0.5- 0.2+ 030901 673 0.3- 0.3+ 031017 360 0.3+ 0.1+ 030823 644 0.6- 0.5+ 030901 673 0.2+ 0.5+ 031018 715 0.0 0.3+ 030823 644 0.3- 0.6+ 030901 673 1.4+ 0.6+ 031018 715 0.2+ 0.2- 030823 246 0.3- 0.7+ 030901 673 0.8+ 0.7+ 031018 715 0.1+ 0.3- 030823 246 0.3- 0.8+ 030901 673 0.8+ 0.8+ 031019 360 0.5+ 0.5+ 030823 246 1.0- 0.2+ 030901 673 0.2+ 0.4+ 031019 360 0.3+ 0.3+ 030823 246 0.5- 0.4+ 030901 673 0.4+ 0.5+ 031019 360 0.4+ 0.7+ 030823 246 0.8- 0.5+ 030903 215 0.5- 0.1- 031020 213 1.7- 0.7- 030823 587 1.3+ 0.7- 030904 360 0.1- 0.3- 031020 213 0.3- 1.2- 030823 151 0.4+ 0.7+ 030904 360 0.2+ 0.6- 2004/ 030823 151 0.2- 0.6+ 030904 360 0.0 0.1- 040714 T09 0.1- 0.1+ 030823 151 0.3+ 0.5+ 030905 204 1.3+ 1.6- 2024/ 030823 151 0.5+ 1.0+ 030905 246 0.2- 0.4+ 240701 F51 0.2+ 0.1+ 030823 587 1.5- 0.6- 030905 246 0.9- 0.1+ 240701 F51 0.2- 0.3+ 030823 587 1.2- 0.7- 030905 246 0.7- 0.2+ 240701 F51 0.0 0.1- 030823 106 0.6- 0.8- 030905 246 (2.1- 0.7-) 240901 W84 0.1+ 0.1- 030823 106 1.2- 0.6- 030913 715 0.1- 0.5- 2025/ 030823 106 0.1- 0.2- 030913 715 (2.0- 1.1-) 250423 G96 0.3- 0.1- 030824 859 0.7- 0.1+ 030913 715 0.4+ 0.2- 250423 G96 0.5- 0.0 030824 J87 0.6- 0.1+ 030914 213 1.4+ 0.2- 250423 G96 0.2- 0.1+ 030824 J87 (3.2- 3.0-) 030914 213 1.0+ 0.4- 250423 G96 0.4- 0.1- 030824 246 0.7- 0.1+ 030914 213 0.7+ 0.4- 250424 H01 0.2+ 0.2+ 030824 246 0.8- 0.5+ 030914 213 0.3+ 0.3- 250424 I52 0.7+ 0.1+ 030824 246 (2.2- 0.7-) 030916 A03 (9.3- 1.0-) 250424 H01 0.1+ 0.3+ 030824 246 0.5- 0.1+ 030917 A03 (1.0+ 4.4+) 250424 I52 0.3+ 0.2+ 030824 621 1.5- 0.5- 030918 204 0.3+ 0.2- 250424 H01 0.1+ 0.2+ 030824 621 1.1- 0.9+ 030918 204 0.8- 0.1- 250424 H01 0.2+ 0.3+ 030824 621 0.3+ 0.0 030918 204 0.3+ 0.2+ 250424 I52 0.6- 0.3- 030824 621 0.6- 0.5+ 030927 H41 0.9+ 0.1+ 250424 I52 0.6- 1.0- 030824 621 0.9- 0.7+ 030928 691 0.4+ 0.1- 250425 X03 0.0 0.3+ 030825 673 0.6+ 0.7+ 030928 691 0.3+ 0.1- 250425 X03 0.0 0.3+ 030825 673 0.4+ 0.9+ 030928 H41 0.1+ 0.5- 250425 X03 0.0 0.5+ 030825 673 0.6+ 1.0+ 030928 691 0.2+ 0.5+ 250425 X03 0.1- 0.0 030825 673 0.4+ 1.1+ 030928 H41 0.9- 1.3- 250425 I52 0.1+ 0.2+ 030825 621 0.7- 1.5- 030928 118 (0.4+ 2.2+) 250425 I52 0.4+ 0.3+ 030826 621 0.4+ 1.5- 030928 118 0.7- 0.3+ 250426 N56 0.2+ 0.0 030826 621 0.1+ 0.0 030930 360 0.4- 0.3- 250426 N56 0.1- 1.1- 030826 621 1.2+ 1.7- 030930 360 0.8- 0.0 250427 I52 0.7+ 0.1- 030826 621 0.9+ 0.8- 030930 360 0.1+ 0.8- 250427 I52 0.6+ 0.2+ 030831 807 0.1- 0.0 031002 A33 (7.6+ 1.9-) 250427 I52 0.0 0.4- 030831 807 0.1- 0.1- 031009 170 0.6- 0.5- 250427 I52 0.4- 0.1+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2025 Apr. 28