Nakano Note (Nakano wa Kangaeru noda) NK 4519 P/Scotti (2015 Q1 = 2021 P5)
The following improved orbital elements, by S. Nakano, are from 359 observations 2015 to 2021. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.59 arc second. Residuals of the recovery observations on 2021 Aug. 2 were +6'.7 for Right Ascension and +1'.2 for Declination from the prediction in NK 3984 (= HICQ 2020/2021) with the delta-T correction = -0.25 day. The comet has passed 0.58 AU and 1.54 AU from Jupiter on 2005 Dec. 2 and 2017 Dec. 8 UT, respectively. See the previous orbits in NK 3042, NK 3149 and NK 3984. Epoch = 2022 Mar. 2.0 TT T = 2022 Feb. 13.36971 +/- 0.00066 (m.e.) TT Peri. = 199.85708 +/- 0.00012 Node = 202.84617 +/- 0.00004 (2000.0) Inc. = 22.39210 +/- 0.00001 q = 1.8136808 +/- 0.0000017 AU e = 0.4776878 +/- 0.0000004 a = 3.4724074 +/- 0.0000041 AU n' = 0.15232040 +/- 0.00000027 P = 6.471 +/- 0.0000116 years T = 2015 Sept. 9.15697 TT Epoch = 2015 Sept.15.0 TT Peri. = 198.96564 e = 0.4892177 Node = 203.30987 (2000.0) a = 3.4294019 AU Inc. = 22.64890 n'= 0.15519456 q = 1.7516777 AU P = 6.351 years The predicted orbit for the 2028 return is as follows: T = 2028 Aug. 9.23999 TT Epoch = 2028 Aug. 17.0 TT Peri. = 199.98110 e = 0.4766256 Node = 202.79593 (2000.0) a = 3.4790925 AU Inc. = 22.36759 n'= 0.15188158 q = 1.8208679 AU P = 6.489 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2015/ 151017 585 0.5- 0.2- 151218 W96 0.1- 0.3+ 150818 691 1.9- 0.4+ 151017 585 0.6- 0.1- 151222 900 0.3- 1.0+ 150818 691 1.7- 0.2+ 151017 585 0.4- 0.1- 151222 900 0.6- 0.1+ 150818 691 (2.2- 0.1-) 151017 585 0.6- 0.1- 151224 T05 0.1+ 0.3+ 150818 Q62 0.2+ 0.1+ 151017 585 0.5- 0.1- 151224 T05 1.3- 0.3+ 150818 Q62 0.4+ 0.2- 151017 585 0.6- 0.2- 151224 T05 0.7- 0.5+ 150818 Q62 0.5+ 0.5+ 151017 585 0.6- 0.1- 151224 T05 0.9- 0.0 150818 Q62 0.4- 0.5+ 151017 585 0.6- 0.1- 151229 I40 0.1- 0.1+ 150819 C10 1.1- 0.1+ 151017 585 0.5- 0.1- 151229 I40 0.1+ 0.1+ 150819 C10 0.7+ 0.1+ 151017 585 0.6- 0.0 151229 I40 0.1+ 0.0 150819 C10 1.9- 0.2+ 151017 585 0.5- 0.5- 151229 I40 0.0 0.1+ 150819 958 0.2+ 0.3- 151017 585 0.5- 0.2- 151229 W96 0.4- 0.1- 150819 958 0.4+ 0.1- 151017 585 0.5- 0.0 151229 W96 (0.7- 2.0+) 150819 C10 1.4- 0.0 151017 J22 0.7- 0.0 151229 Q68 0.1+ 0.2+ 150819 958 0.4+ 0.2+ 151017 J22 0.7- 0.4- 151229 Q68 0.3+ 0.1- 150819 W96 0.2- 0.4+ 151017 J22 0.4- 0.3- 151229 C10 0.4- 0.7+ 150819 W96 1.1+ 0.4- 151017 G45 0.6- 0.0 151229 C10 0.8- 1.1+ 150819 W96 0.1- 1.0+ 151017 G45 0.8- 0.1- 151231 G45 (0.4- 2.1+) 150819 H01 0.3+ 0.2+ 151017 G45 0.8- 0.2- 151231 G45 0.5- 1.2+ 150819 291 0.9+ 0.4+ 151017 G45 0.1+ 0.3- 151231 G45 (1.8- 2.0+) 150819 291 0.9+ 0.4+ 151020 160 0.9- 0.4- 151231 G45 0.5- 0.8+ 150819 H01 0.6+ 0.2+ 151020 160 0.1- 0.0 151231 G45 1.1- 1.7+ 150819 291 0.8+ 0.3+ 151020 160 0.1- 0.1- 151231 G45 0.2- 1.1+ 150819 H01 0.4+ 0.2+ 151025 J22 0.0 0.2- 2016/ 150819 H06 0.5+ 0.2+ 151025 J22 0.2- 0.3- 160101 Q68 0.2- 0.4+ 150819 H06 0.2+ 0.5+ 151025 J22 0.3- 0.2- 160101 Q68 0.3- 0.6+ 150820 A77 1.8- 0.1+ 151031 B83 0.1+ 0.3- 160101 Q68 0.4+ 0.0 150820 A77 1.5- 0.4+ 151031 B83 0.1+ 0.6- 160101 Q68 0.1+ 0.4+ 150820 291 0.7+ 0.2+ 151101 G45 0.7- 0.3- 160102 349 0.4- 0.8- 150820 291 0.9+ 0.3+ 151101 G45 0.2- 0.2- 160102 349 0.0 0.5- 150820 291 0.8+ 0.3+ 151101 G45 0.3- 0.0 160103 T05 0.7- 1.1+ 150823 A71 0.8- 0.1- 151101 G45 1.4- 0.2- 160103 T05 (0.2- 3.3+) 150823 A71 0.9- 0.1- 151102 160 0.8- 0.2- 160103 T05 0.4- 1.2+ 150824 W96 1.2+ 0.2- 151102 160 0.4- 0.1+ 160103 T05 0.5- 0.8+ 150824 W96 0.2+ 0.2+ 151102 160 0.0 0.2- 160104 T05 (0.6+ 2.6+) 150826 215 0.2- 0.0 151105 J22 0.2+ 0.0 160104 T05 0.2- 1.8+ 150826 215 0.1- 0.0 151105 J22 0.2+ 0.0 160104 T05 (0.5- 2.4+) 150826 215 0.0 0.0 151105 J22 0.0 0.3- 160104 T05 0.5+ 0.4+ 150826 J22 0.3+ 0.2- 151106 C47 0.4- 0.0 160110 I40 0.4+ 0.0 150826 J22 0.2+ 0.3- 151106 C47 0.1+ 0.2+ 160110 I40 0.3+ 0.1+ 150826 J22 0.2- 0.1+ 151106 C47 0.3+ 0.3- 160110 I40 0.4+ 0.1+ 150826 N55 0.0 0.3- 151106 C47 0.0 0.4+ 160110 I40 0.4+ 0.0 150826 N55 0.7+ 0.0 151106 C47 0.6+ 0.4- 160110 E07 0.4+ 0.1- 150826 N55 0.1- 0.0 151106 C47 0.4+ 0.8- 160110 E07 0.2- 0.0 150827 N55 0.1- 0.3- 151106 C47 0.5+ 0.3- 160110 474 0.2+ 0.4+ 150827 N55 1.1+ 0.1- 151106 291 1.1- 0.2- 160110 474 0.6+ 0.2+ 150827 N55 0.8+ 0.2- 151106 291 0.3+ 0.2- 160110 474 0.3+ 1.4+ 150827 N55 0.7+ 0.2- 151106 291 0.6- 0.2- 160111 T05 0.1+ 0.9+ 150908 160 0.1+ 0.1+ 151107 B83 1.7- 0.7+ 160111 T05 (1.0+ 2.2+) 150908 160 0.1+ 0.0 151107 B83 (2.2- 0.1+) 160111 T05 (0.0 2.5+) 150908 160 0.0 0.2- 151107 B83 0.9- 0.4- 160111 T05 0.8- 0.7+ 150909 J22 0.0 0.1+ 151108 B83 0.5- 0.2+ 160111 T05 0.9- 1.7+ 150909 J22 0.4+ 0.4+ 151108 157 0.1+ 0.6- 160113 K25 0.5+ 0.0 150909 J22 0.3- 0.3+ 151108 157 0.4+ 0.3- 160113 K25 0.0 0.2- 150910 585 0.1+ 0.4- 151108 157 0.2+ 0.1- 160114 W88 0.3+ 0.6+ 150910 585 0.3+ 0.4- 151108 B83 0.8- 0.3- 160114 W88 0.4+ 0.5+ 150910 585 0.4+ 0.5- 151108 B83 0.5- 0.2- 160114 W88 0.1+ 0.9+ 150910 585 0.4+ 0.5- 151108 W96 0.1- 0.2- 160115 I40 0.3+ 0.0 150910 585 0.5+ 0.4- 151108 W96 0.3- 0.4- 160115 I40 0.3+ 0.0 150910 585 0.4+ 0.1- 151108 W96 0.1- 0.3- 160115 I40 0.4+ 0.0 150910 585 0.1+ 0.1+ 151109 H45 0.5- 0.5- 160115 I40 0.5+ 0.0 150910 585 0.1+ 0.2+ 151109 H45 0.3- 0.4- 160116 F51 0.4+ 0.2- 150910 585 0.9- 0.4+ 151109 H45 0.2- 0.3- 160116 F51 0.4+ 0.1- 150910 585 0.0 0.0 151109 H45 0.2+ 0.5- 160116 F51 0.4+ 0.2- 150910 160 0.0 0.0 151110 W96 1.1- 1.0- 160116 F51 0.4+ 0.1+ 150910 160 0.4+ 0.0 151110 W96 0.9- 0.5- 160118 G45 (0.1+ 2.0+) 150910 160 0.3+ 0.4- 151115 J01 1.1- 0.5- 160118 G45 0.4+ 1.7+ 150910 C51 0.4+ 0.8- 151115 J01 0.5- 0.3- 160118 G45 (0.5+ 2.0+) 150911 C51 1.3- 0.4- 151115 J01 1.1- 0.3- 160118 G45 0.1+ 1.6+ 150911 C51 0.3- 0.3+ 151115 Q21 0.4+ 0.1- 160118 Q62 0.3+ 0.3+ 150911 C51 1.1- 0.4- 151115 Q21 0.2+ 0.1- 160118 Q62 0.2+ 0.0 150911 C51 0.2- 0.2- 151115 Q21 0.1- 0.2- 160123 215 0.5+ 0.3+ 150911 C51 0.5+ 0.3+ 151117 J22 0.4+ 0.3- 160123 215 0.0 0.3- 150911 C51 0.1- 0.3- 151117 J22 0.2+ 0.0 160123 215 0.2+ 0.4- 150911 C51 0.1- 0.9+ 151117 J22 0.1- 0.2+ 160124 F51 0.4+ 0.2- 150912 C51 0.4- 0.9+ 151119 H47 0.5- 0.0 160124 F51 0.3+ 0.2- 150912 160 0.2+ 0.3- 151119 H47 0.4- 0.0 160124 F51 0.4+ 0.1- 150912 160 0.3+ 0.3- 151120 367 0.8- 0.0 160124 F51 0.4+ 0.1- 150912 160 0.5+ 0.0 151120 367 0.7- 0.4- 160202 474 0.8+ 0.4- 150912 C51 0.4+ 0.8+ 151120 367 0.7- 0.0 160202 474 1.2+ 0.6- 150912 C51 0.7- 1.2+ 151121 703 (2.2- 1.1+) 160202 474 0.9+ 0.2+ 150912 C51 0.1+ 0.0 151121 703 (2.7- 1.4+) 160202 474 0.7+ 0.2- 150912 C51 0.1- 0.7- 151121 703 (2.2- 0.4+) 160202 474 1.2+ 0.0 150912 C51 0.2+ 0.2+ 151121 703 (6.3- 0.4+) 160203 J22 1.0+ 0.4- 150916 J22 0.1+ 0.1- 151122 H47 0.7- 0.2- 160203 J22 (2.0- 0.2-) 150916 J22 0.2+ 0.1- 151122 H47 0.7- 0.1- 160204 T05 (0.3+ 2.4+) 150916 J22 1.0+ 0.4- 151122 H47 0.7- 0.2+ 160204 T05 0.7+ 0.1- 150919 G38 0.3+ 0.1- 151127 349 0.7- 0.2- 160204 T05 0.5+ 1.5+ 150919 G38 0.1- 0.3- 151127 349 1.0- 0.4- 160204 T05 1.1+ 1.0+ 150921 A71 0.4+ 0.4- 151201 T05 1.2- 0.1+ 160205 J22 0.2+ 0.2- 150921 160 0.3- 0.2- 151201 T05 1.3- 0.8+ 160205 J22 0.0 0.0 150921 A71 0.2- 0.1- 151201 T05 1.2- 0.2- 160205 J22 0.3- 0.1+ 150921 160 0.1- 0.2- 151201 T05 1.4- 0.5+ 160205 W88 0.4+ 0.0 150921 160 0.0 0.2- 151203 T05 1.2- 0.1+ 160205 W88 0.9+ 0.3- 150921 A71 1.6- 0.4+ 151203 T05 1.3- 0.4+ 160209 E07 0.7+ 0.1- 150921 A71 1.6- 0.7+ 151203 T05 1.6- 0.6+ 160209 E07 0.5+ 0.2- 150923 J22 0.1- 0.2- 151203 T05 1.0- 0.2+ 160210 G45 0.7+ 1.7+ 150923 J22 0.1+ 0.1- 151205 H47 0.4+ 0.3+ 160210 G45 (0.4+ 2.2+) 150923 J22 0.2- 0.3- 151205 H47 0.0 0.2+ 160210 G45 1.3+ 1.3+ 150924 291 1.7- 0.0 151205 H47 0.2- 0.1+ 160210 G45 0.2+ 1.3+ 150924 291 0.5- 0.0 151207 D81 0.8+ 0.9- 160211 900 0.6+ 1.1+ 150924 291 0.7- 0.1- 151207 D81 1.1- 1.6+ 160211 900 0.9+ 0.1+ 150928 W96 1.7- 0.9- 151209 D88 1.6- 0.6+ 160217 Q21 0.5+ 0.8+ 150928 W96 (1.2- 2.1-) 151209 D88 1.3- 0.6+ 160217 Q21 (1.8- 2.7+) 151001 C10 (3.5- 2.4-) 151209 D88 0.3- 1.1+ 160225 E85 0.4- 1.0- 151001 C10 (4.8- 1.4-) 151209 E07 0.1- 0.2- 160225 E85 0.1+ 0.2+ 151007 C36 0.7- 0.1+ 151209 E07 0.2- 0.2+ 160225 E85 0.1- 0.6- 151007 C36 0.7- 0.7+ 151210 J22 (1.7+ 2.5-) 160225 E85 0.1+ 0.0 151007 C36 0.2+ 0.1- 151210 J22 0.7- 0.1+ 160302 F51 0.3+ 0.4- 151007 C36 0.8- 0.3+ 151210 J22 (0.5+ 2.6+) 160302 F51 0.4+ 0.4- 151008 J22 0.0 0.0 151213 T05 0.9- 0.7+ 160302 F51 0.4+ 0.3- 151008 J22 0.1- 0.1+ 151213 T05 1.1- 0.4+ 2021/ 151008 J22 0.2+ 0.2- 151213 T05 1.7- 0.1+ 210605 W62 0.5+ 0.0 151008 F51 0.4+ 0.1- 151213 T05 0.9- 0.5+ 210605 W62 0.7- 0.7+ 151008 F51 0.4+ 0.1- 151214 G40 0.3- 0.0 210605 W62 0.2- 0.6+ 151008 F51 0.5+ 0.2- 151214 G40 0.1+ 0.2- 210802 A77 0.5- 0.4+ 151009 F51 0.4+ 0.0 151216 W96 0.8- 1.2+ 210802 A77 0.3- 0.8+ 151009 F51 0.5+ 0.1- 151216 W96 0.9- 0.5+ 210803 A77 0.1- 1.2+ 151009 F51 0.5+ 0.1- 151216 703 0.6- 1.0+ 210805 W62 0.9+ 0.4+ 151009 F51 0.5+ 0.1- 151216 703 (2.9- 2.3+) 210805 W62 0.6+ 0.3+ 151010 585 1.3- 0.2- 151216 703 (5.8- 1.0+) 210805 W62 1.3+ 0.3+ 151010 585 1.5- 0.3- 151217 J22 0.3+ 0.6+ 210807 A77 0.1- 0.7+ 151010 585 1.5- 0.4- 151217 J22 0.2- 0.5+ 210807 A77 0.2- 0.8+ 151012 C23 0.2- 0.1+ 151217 J22 0.1- 0.3+ 210807 A77 0.3- 0.7+ 151012 C23 0.7- 0.2- 151217 130 0.9- 0.4+ 210808 L27 1.5- 1.6+ 151012 C23 0.7- 0.6- 151217 130 0.4- 0.2+ 210808 L27 0.5- 0.4+ 151015 I57 1.2- 1.9+ 151217 130 0.3- 0.4+ 210816 A77 0.3- 0.6+ 151015 I57 1.6- 0.3+ 151217 130 0.4- 0.5+ 210816 A77 0.3- 0.2+ 151015 I57 0.3- 0.4- 151218 W96 0.0 0.1+ 210816 A77 0.0 0.2+ 151017 585 0.4- 0.1- 151218 W96 0.1+ 0.3- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2021 Aug. 29