Nakano Note (Nakano wa Kangaeru noda) NK 3900 313P/Gibbs
The following improved orbital elements, by S. Nakano, are from 108 observations 2003 to 2019. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.67 arc second. Residuals on re-observations in 2018/2019 were +7" mainly for Right Ascension from the prediction by T. Kobayashi in NK 3403 (= HICQ 2019) with the delta-T correction = -0.008 day. See the previous orbits in NK 2789 and NK 3403. Epoch = 2020 Apr. 21.0 TT T = 2020 Apr. 15.16815 +/- 0.00058 (m.e.) TT Peri. = 254.60760 +/- 0.00032 Node = 105.97126 +/- 0.00027 (2000.0) Inc. = 10.98331 +/- 0.00002 q = 2.4188887 +/- 0.0000033 AU e = 0.2347724 +/- 0.0000010 a = 3.1610054 +/- 0.0000060 AU n' = 0.17537440 +/- 0.00000050 P = 5.620 +/- 0.0000161 years T = 2003 June 19.63032 TT Epoch = 2003 June 10.0 TT Peri. = 253.50337 e = 0.2480751 Node = 106.69241 (2000.0) a = 3.1475763 AU Inc. = 10.96276 n'= 0.17649795 q = 2.3667411 AU P = 5.584 years [ T = 2009 Jan. 18.35497 TT Epoch = 2009 Jan. 9.0 TT Peri. = 253.19599 e = 0.2433266 Node = 106.54706 (2000.0) a = 3.1519553 AU Inc. = 10.97070 n'= 0.17613027 q = 2.3850007 AU P = 5.596 years ] T = 2014 Aug. 28.49599 TT Epoch = 2014 Aug. 11.0 TT Peri. = 253.50390 e = 0.2419485 Node = 106.49672 (2000.0) a = 3.1549813 AU Inc. = 10.96655 n'= 0.17587693 q = 2.3916382 AU P = 5.604 years The predicted orbit for the 2025 return is as follows: T = 2025 Dec. 2.78422 TT Epoch = 2025 Nov. 21.0 TT Peri. = 254.99874 e = 0.2343108 Node = 105.92490 (2000.0) a = 3.1626181 AU Inc. = 10.98107 n'= 0.17524028 q = 2.4215826 AU P = 5.624 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2003/ 140925 595 1.2- 0.4+ 141011 E07 0.5+ 0.3+ 030922 699 1.4- 0.0 140925 958 1.0- 0.4- 141014 703 0.3+ 1.4+ 030922 699 (2.7- 0.2-) 140926 I93 0.9- 0.0 141014 703 0.1- 1.7+ 030922 699 1.8- 0.0 140926 958 0.6- 0.4+ 141014 703 0.2+ 0.6+ 030922 699 (3.1- 0.6-) 140926 595 0.8- 0.5+ 141014 703 1.4- 1.6+ 030930 645 1.0+ 0.4- 140926 I93 0.6- 0.4+ 141018 215 0.9+ 0.4+ 031023 645 1.0+ 0.2- 140926 958 0.4- 0.1+ 141018 215 0.9+ 0.1+ 031024 645 1.0+ 0.2- 140926 I93 0.1- 0.0 141018 215 0.8+ 0.3- 031123 699 0.1- 1.3+ 140926 W96 0.0 0.2- 141022 372 0.0 0.8+ 031123 699 0.2- 0.5+ 140926 W96 0.1+ 0.6- 141022 372 0.1- 0.9+ 031123 699 1.6- 1.3+ 140926 W96 0.0 0.2+ 141023 G45 0.2+ 0.1+ 031123 699 (1.3- 2.4+) 140926 W96 0.0 0.0 141023 G45 0.0 0.4+ 031128 645 1.1+ 0.1- 140926 W96 0.4+ 0.2- 141023 G45 1.0+ 0.4+ 2004/ 140926 W96 0.0 0.5- 141023 G45 0.4+ 0.4+ 040916 568 0.3- 0.7- 140926 W96 0.3+ 0.2- 141110 F51 0.5+ 0.2- 040916 568 0.1+ 0.4- 140926 Q62 0.2- 0.3- 141110 F51 0.8+ 0.3- 040916 568 0.0 0.4- 140926 Q62 0.3- 0.8+ 141110 F51 0.9+ 0.1- 040916 568 0.1- 0.5- 140926 Q62 0.1+ 0.1+ 141128 G96 1.4+ 1.2+ 2014/ 140926 Q62 0.3- 0.0 141128 G96 0.3+ 0.4+ 140806 F51 0.2- 0.0 140926 Q62 0.5- 0.0 141128 G96 0.2+ 0.5+ 140806 F51 0.1+ 0.1- 140927 B04 0.0 0.4- 2018/ 140806 F51 0.1+ 0.0 140927 B04 0.1+ 0.0 180615 T08 0.0 0.9+ 140818 F51 0.0 0.2- 140927 B04 0.3- 0.3- 180615 T08 0.4- 1.0+ 140818 F51 0.1+ 0.3- 140929 585 0.7- 1.4- 180615 T08 0.5+ 1.6+ 140818 F51 0.3+ 0.4- 140929 585 0.2- 0.7- 180615 T08 0.3+ 0.6+ 140903 F51 0.2+ 0.5- 140929 585 0.4- 0.7- 180617 T05 0.1+ 1.4+ 140903 F51 0.1+ 0.5- 140929 585 0.2+ 0.4- 180617 T05 0.4- 0.6+ 140914 703 1.0- 1.0- 140930 G96 1.2- 0.2+ 180617 T05 0.1+ 0.2+ 140914 703 0.0 0.3+ 140930 G96 0.6- 0.2+ 180617 T05 0.2- 1.3+ 140914 703 1.0- 0.7- 140930 G96 1.1- 0.2+ 180711 D29 (2.5+ 0.5+) 140914 703 1.6- 1.3- 141002 G96 1.0- 0.3+ 180711 D29 1.5+ 0.7+ 140924 703 0.8+ 0.8+ 141002 G96 0.6- 0.2+ 180711 D29 (2.1+ 0.6+) 140924 703 0.1- 1.1+ 141002 G96 0.7- 0.1+ 180731 Q62 1.4+ 0.2+ 140924 703 0.3- 0.4+ 141002 G96 0.9- 0.3+ 180731 Q62 1.5+ 0.1+ 140924 703 1.9- 0.4+ 141002 G96 1.0- 0.3+ 180731 Q62 0.9+ 0.5+ 140925 G96 0.8- 0.4- 141002 G96 1.3- 0.6+ 2019/ 140925 G96 0.9- 0.1- 141002 G96 0.8- 0.2+ 190919 Q62 0.1+ 0.6+ 140925 G96 0.0 0.0 141002 G96 0.9- 0.3+ 190919 Q62 0.2+ 0.3+ 140925 G96 0.5- 0.2- 141002 G96 0.9- 0.5+ 140925 595 0.2- 0.4+ 141011 E07 0.7+ 0.6+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2019 Oct. 1