Nakano Note (Nakano wa Kangaeru noda) NK 4796 P/PANSTARRS (2015 X1 = 2008 Tx = 2022 Qx)
The following improved orbital elements, by S. Nakano, are from 96 observations 2008 to 2022. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.41 arc second. Residuals for the recovery observations were +27" for Right Ascension and +5" for Declination from the prediction in NK 3986 with the delta-T correction = -0.016 day. The comet has passed 0.59 AU from Jupiter on 2005 Jan. 20 UT. See the previous orbits in NK 3031, NK 3087 and NK 3986. The following identical objects in 2008 were found from a linked orbit 2015-2022 which show small residuals. So that delta-T correction was not required. Thus the comet has made three appearaces 8T05073* C2008 10 01.37698 00 22 58.76 -07 32 30.5 20.0 Vr 703 8T05073 C2008 10 01.38512 00 22 58.44 -07 32 35.3 19.9 Vr 703 8T05073 C2008 10 01.39329 00 22 58.08 -07 32 43.6 19.0 Vr 703 8T05073 C2008 10 01.40147 00 22 57.86 -07 32 48.7 19.8 Vr 703 8Y383BC* C2008 12 31.11418 01 02 39.26 -06 16 13.3 18.9 Vr 703 8Y383BC C2008 12 31.12264 01 02 39.76 -06 16 10.2 19.8 Vr 703 8Y383BC C2008 12 31.13120 01 02 40.52 -06 16 04.6 19.5 Vr 703 8Y383BC C2008 12 31.13973 01 02 41.06 -06 16 00.9 19.6 Vr 703 Epoch = 2022 Sept.18.0 TT T = 2022 Sept. 6.59931 +/- 0.00154 (m.e.) TT Peri. = 218.74067 +/- 0.00062 Node = 161.75746 +/- 0.00006 (2000.0) Inc. = 12.15176 +/- 0.00002 q = 2.1120590 +/- 0.0000013 AU e = 0.4192318 +/- 0.0000003 a = 3.6366643 +/- 0.0000032 AU n' = 0.14211806 +/- 0.00000019 P = 6.935 +/- 0.0000090 years T = 2008 Nov. 9.31841 TT Epoch = 2008 Oct. 21.0 TT Peri. = 218.75678 e = 0.4214720 Node = 161.88730 (2000.0) a = 3.6227088 AU Inc. = 12.17604 n'= 0.14294005 q = 2.0958384 AU P = 6.895 years T = 2015 Oct. 10.68105 TT Epoch = 2015 Oct. 25.0 TT Peri. = 219.03191 e = 0.4204003 Node = 161.79100 (2000.0) a = 3.6292942 AU Inc. = 12.16213 n'= 0.14255118 q = 2.1035377 AU P = 6.914 years The predicted orbit for the 2029 return is as follows: T = 2029 Aug. 13.08845 TT Epoch = 2029 Aug. 12.0 TT Peri. = 218.67863 e = 0.4176288 Node = 161.73507 (2000.0) a = 3.6417156 AU Inc. = 12.13959 n'= 0.14182246 q = 2.1208304 AU P = 6.950 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2008/ 151017 G45 1.3- 0.5- 151204 691 0.1- 0.6+ 081001 703 (3.5+ 1.9+) 151017 G45 0.2+ 0.3- 151204 H01 0.3+ 0.2- 081001 703 (2.2+ 2.6+) 151017 G45 0.0 0.6+ 151204 H01 0.5+ 0.0 081001 703 0.2+ 0.2- 151017 G45 0.7- 0.6+ 151204 H01 0.2+ 0.2- 081001 703 0.3+ 0.2+ 151017 G45 0.0 0.6+ 151204 H01 0.4+ 0.3- 081231 703 (2.5+ 3.6+) 151017 G45 0.1- 0.5+ 151204 C10 0.2+ 0.8+ 081231 703 0.1- 1.6+ 151101 G45 0.5- 0.5+ 151204 C10 0.1- 0.6+ 081231 703 (1.2+ 2.1+) 151101 G45 0.2- 0.2+ 151204 C10 0.2- 0.2+ 081231 703 0.8- 0.7+ 151101 G45 0.1- 0.0 151205 568 0.0 0.0 2015/ 151101 G45 0.0 0.2+ 151205 568 0.0 0.0 150812 F51 0.0 0.1+ 151108 G45 0.1- 0.2- 151205 568 0.1+ 0.0 150812 F51 0.0 0.2+ 151108 G45 0.1+ 0.9+ 151206 215 0.4- 0.9+ 150812 F51 0.1+ 0.1- 151108 G45 0.1+ 0.0 151206 215 0.4- 0.5+ 150812 F51 0.4+ 0.0 151108 G45 0.1- 0.2+ 151206 215 0.5- 0.1+ 150915 G45 0.3+ 0.2+ 151201 F51 0.0 0.3- 151206 958 0.0 1.2+ 150915 G45 0.3+ 0.1+ 151201 F51 0.0 0.3- 151206 958 1.0+ 1.6+ 150915 G45 0.3- 0.3+ 151201 F51 0.0 0.3- 151208 372 0.1- 0.6+ 150915 G45 0.1+ 0.4- 151201 F51 0.1+ 0.3- 151208 372 0.6- 1.2+ 150915 G45 0.2- 0.3+ 151202 H01 0.1+ 0.0 151208 372 0.2+ 0.7+ 150915 G45 0.5- 0.2+ 151202 H01 0.2+ 0.0 2016/ 150915 G45 0.2+ 0.3+ 151202 H01 0.3+ 0.1- 160103 F51 0.2+ 0.0 150923 F51 0.0 0.1- 151202 H01 0.2+ 0.1- 160103 F51 0.0 0.1- 150923 F51 0.0 0.2- 151202 H06 0.4+ 0.0 160103 F51 0.0 0.1+ 150923 F51 0.0 0.2- 151202 H06 0.1+ 0.4+ 160103 F51 0.0 0.0 150923 F51 0.1- 0.1- 151202 H06 0.0 0.1+ 160103 F51 0.1- 0.0 151009 703 0.3+ 0.9+ 151202 K51 0.3- 0.3+ 160103 F51 0.0 0.0 151009 703 0.2- 0.4- 151202 K51 0.2- 0.2+ 160103 F51 0.1+ 0.1- 151009 703 0.8- 0.0 151202 K51 0.1- 0.2+ 2022/ 151009 703 0.1- 0.4+ 151203 H01 0.0 0.2- 220823 Z84 0.2+ 0.0 151015 703 0.6- 0.5+ 151203 H01 0.0 0.1- 220823 Z84 0.1+ 0.1- 151015 703 0.0 0.0 151203 H01 0.1+ 0.2- 220823 Z84 0.1+ 0.3+ 151015 703 0.5- 0.4- 151203 H01 0.1+ 0.1- 220824 Z84 0.0 0.1- 151015 703 1.1- 0.0 151204 691 0.2- 0.5+ 220824 Z84 0.0 0.3+ 151017 G45 0.3- 0.2+ 151204 691 0.2- 0.6+ 220824 Z84 0.1- 0.0 151017 G45 0.1- 0.2- 151204 691 0.2+ 1.7+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2022 Aug. 24