Nakano Note (Nakano wa Kangaeru noda) NK 3228 229P/Gibbs
The following improved orbital elements, by S. Nakano, are from 137 observations 2001 to 2016. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.71 arc second. The residuals of re-observations were +20" maily for Right Ascension from the prediction in NK 2716 (= HICQ 2016) by T. Kobayashi with the delta-T correction = +0.05 day. The comet has passed 0.57 AU from Jupiter on 2004 May 1 UT. See the previous orbits in NK 1862 and NK 2716. Epoch = 2017 May 7.0 TT T = 2017 May 20.74510 +/- 0.00050 (m.e.) TT Peri. = 224.14379 +/- 0.00017 Node = 157.90941 +/- 0.00004 (2000.0) Inc. = 26.06787 +/- 0.00002 q = 2.4558647 +/- 0.0000028 AU e = 0.3760874 +/- 0.0000006 a = 3.9362322 +/- 0.0000015 AU n' = 0.12620687 +/- 0.00000007 P = 7.809 +/- 0.0000046 years T = 2001 Sept.24.26367 TT Epoch = 2001 Sept. 8.0 TT Peri. = 220.10245 e = 0.3594568 Node = 160.27632 (2000.0) a = 3.8914634 AU Inc. = 27.34868 n'= 0.12839102 q = 2.4926506 AU P = 7.677 years T = 2009 Aug. 4.16813 TT Epoch = 2009 July 28.0 TT Peri. = 224.00010 e = 0.3780010 Node = 157.98177 (2000.0) a = 3.9231740 AU Inc. = 26.11070 n'= 0.12683751 q = 2.4402104 AU P = 7.771 years The predicted orbit for the 2025 return is as follows: T = 2025 Mar. 5.76890 TT Epoch = 2025 Feb. 14.0 TT Peri. = 224.21132 e = 0.3779230 Node = 157.88383 (2000.0) a = 3.9229141 AU Inc. = 26.09732 n'= 0.12685012 q = 2.4403548 AU P = 7.770 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2001/ 090927 213 0.1- 0.3- 091118 703 (0.8- 3.3+) 010823 608 (0.7+ 2.3-) 090927 213 0.4- 0.4- 091118 703 (1.7- 4.1+) 010824 608 0.2- 1.4- 090927 A77 0.1+ 0.4- 091119 900 (0.2- 2.0+) 010924 644 0.1- 1.3- 090927 A77 0.3- 0.8- 091119 900 (0.7+ 4.3+) 010924 644 0.0 0.9- 090927 A77 0.1- 0.9- 091120 I10 0.1- 0.8+ 011027 644 0.8+ 0.1- 090928 H06 0.5- 1.4- 091120 I10 0.5+ 0.5+ 011027 644 0.0 0.1- 090928 H06 1.1- 0.7- 091120 H10 0.2+ 0.1+ 011027 644 0.1+ 0.1+ 090928 585 (2.3- 1.2-) 091120 H10 0.2+ 0.9+ 2009/ 090928 585 (2.8- 0.9-) 091120 H10 0.3- 1.4+ 090920 703 0.8- 0.7- 090929 204 0.1+ 0.4- 091124 A77 0.6+ 0.5+ 090920 703 1.4- 0.8- 090929 850 0.6- 0.3+ 091125 I10 0.6- 0.6+ 090920 703 (2.4- 0.2-) 090929 850 1.3- 1.3- 091125 I10 0.1- 0.4+ 090920 703 1.7- 0.2- 090929 850 (2.9- 0.5-) 091201 900 (0.4- 3.5+) 090920 703 1.2- 0.8- 090930 A77 0.8- 0.1+ 091201 900 1.0+ 1.4+ 090920 703 0.7- 0.0 090930 A77 0.2+ 1.0- 091205 I10 (2.9+ 0.9+) 090920 703 0.0 0.7- 091010 474 0.3+ 0.4- 091205 I10 (4.3+ 1.2-) 090920 703 0.4- 0.1- 091010 474 0.0 0.4- 091205 I10 (4.6+ 0.7-) 090920 D90 0.3- 0.7- 091010 474 0.2+ 0.3- 091205 I10 0.8- 0.2+ 090920 D90 0.6- 0.4- 091010 474 0.3+ 0.0 091205 I10 1.0+ 0.6+ 090921 I21 1.5+ 1.3- 091014 372 0.7- 0.4- 091205 I10 0.3+ 0.6- 090921 I21 0.9+ 1.8- 091015 900 0.2+ 0.5- 091208 A77 (0.7+ 2.2+) 090921 I20 0.7- 0.4+ 091015 900 0.2- 0.2+ 091208 A77 0.8+ 1.7+ 090921 I20 0.8- 0.3+ 091015 585 (1.0+ 2.8+) 091208 A77 (1.2+ 3.6+) 090921 I20 1.1- 0.5+ 091015 585 (0.5+ 4.2+) 091214 J01 0.8+ 0.7+ 090921 H06 0.5- 0.1+ 091018 585 1.0+ 0.2- 091214 J01 0.6+ 1.5+ 090921 H36 0.4- 0.6- 091019 349 0.2- 0.3- 091217 900 0.2- 1.7+ 090921 H36 0.9- 0.3- 091019 349 0.8- 0.4+ 091217 900 1.4+ 1.3+ 090921 H36 0.1+ 0.9- 091020 H45 0.3+ 0.2+ 091218 900 (1.6+ 3.4+) 090921 H06 0.2+ 0.5- 091020 H45 0.2- 0.6+ 091218 900 (4.1+ 7.2+) 090921 H36 0.3+ 0.4- 091020 H45 0.5- 1.1+ 091220 H23 1.9+ 0.7+ 090921 H06 0.6- 0.1- 091020 H45 0.5- 0.1+ 091220 H23 0.7+ 0.2- 090921 H36 0.2- 0.8- 091020 H45 0.0 0.8+ 091220 H23 (0.9+ 2.2+) 090921 H06 0.7- 0.2+ 091020 900 (2.1- 2.7+) 2010/ 090921 H06 1.3- 0.5+ 091020 900 (3.0+ 0.2+) 100115 A77 (2.1+ 0.9+) 090921 F65 0.6+ 0.5- 091020 E16 0.0 0.1+ 100115 A77 (3.2+ 1.1+) 090921 F65 0.4+ 0.6- 091020 E16 0.2+ 0.1- 100115 A77 (2.3+ 1.5+) 090921 F65 1.0+ 0.4- 091021 215 1.6- 0.5+ 100115 204 0.6+ 0.7+ 090921 F65 0.9+ 0.6- 091021 215 0.9- 0.4+ 100115 204 0.9+ 0.3+ 090922 204 0.2- 0.5- 091021 215 1.0- 1.2+ 100204 C51 (2.1+ 0.3-) 090922 204 0.3- 0.6- 091026 204 0.1- 0.1+ 100204 C51 (2.3+ 2.4+) 090922 854 0.2+ 0.1- 091026 130 1.0- 0.9+ 100204 C51 1.4+ 1.6+ 090922 854 0.4- 0.1- 091026 130 0.3+ 0.4+ 100204 C51 (2.0+ 2.8+) 090922 854 0.5- 0.1+ 091026 130 0.7- 1.3+ 100205 C51 (2.8+ 3.0+) 090922 673 0.2+ 1.0- 091026 130 1.6+ 0.4- 100205 C51 (3.0+ 1.9+) 090922 673 0.5- 0.0 091026 204 0.1- 0.3+ 100205 C51 (1.0+ 2.4+) 090922 673 0.2- 0.4- 091030 E85 0.3+ 0.3+ 100205 C51 1.8+ 1.9+ 090922 673 0.5+ 0.9- 091030 E85 0.6- 0.6+ 100205 C51 (2.4+ 1.6+) 090924 585 0.2+ 1.5- 091030 E85 0.2+ 0.5+ 100205 C51 (0.6+ 3.4+) 090924 585 0.7+ 0.9- 091108 D90 0.1+ 0.1- 100205 C51 (1.5+ 2.3+) 090924 585 (0.2+ 2.6-) 091108 D90 0.4+ 0.0 100205 C51 1.9+ 1.5+ 090924 585 (1.3+ 2.3-) 091108 D90 0.6+ 0.4+ 100205 C51 1.0+ 1.4+ 090924 585 (1.2+ 2.5-) 091109 204 0.3+ 0.5+ 100205 C51 0.8+ 0.8+ 090924 585 1.3+ 1.8- 091110 204 0.2+ 0.6+ 100205 C51 (2.9+ 3.0+) 090925 H06 1.7- 0.3+ 091116 A77 0.4+ 0.4+ 100212 204 1.2+ 0.6+ 090925 H06 (2.3- 0.3-) 091116 A77 0.3- 0.4+ 2016/ 090925 H06 (2.9- 1.0-) 091116 A77 0.2- 1.0+ 160708 F51 0.2+ 0.1+ 090925 H10 0.3+ 0.8- 091117 I10 0.2- 0.1+ 160708 F51 0.2+ 0.2+ 090925 H10 0.9- 0.3- 091117 I10 0.2- 0.1+ 160708 F51 0.1- 0.1+ 090925 H10 0.1- 1.6+ 091118 I10 0.8+ 1.1- 160709 F51 0.0 0.1+ 090925 349 (3.2- 0.6+) 091118 I10 0.1+ 0.5+ 160709 F51 0.1- 0.4+ 090925 349 (2.7- 0.1-) 091118 703 (0.8+ 2.5+) 160709 F51 0.1- 0.2+ 090927 213 0.2- 0.5- 091118 703 (1.6- 3.6+) ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2016 Sept. 1