Nakano Note (Nakano wa Kangaeru noda) NK 4722 89P/Russell 2
The following improved orbital elements, by S. Nakano, are from 187 observations 1980 to 2017, including planetary perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas, Vesta, and non-gravitational effect of style II. The mean residual is +/- 0.72 arc second. See the previous orbits in NK 392, NK 474, NK 522, NK 694, NK 1322 (= MPC 56804) and NK 2528. Epoch = 2016 Nov. 28.0 TT T = 2016 Dec. 14.69426 +/- 0.00105 (m.e.) TT Peri. = 250.15145 +/- 0.00026 Node = 41.44540 +/- 0.00005 (2000.0) Inc. = 12.07654 +/- 0.00001 q = 2.2204843 +/- 0.0000012 AU e = 0.4080240 +/- 0.0000002 a = 3.7509701 +/- 0.0000024 AU n' = 0.13567151 +/- 0.00000013 P = 7.265 +/- 0.0000069 years A1 = +0.903 +/- 0.053 A2 = -0.03634 +/- 0.00071 T = 1980 May 19.03457 TT Epoch = 1980 May 1.0 TT Peri. = 245.19051 e = 0.4167891 Node = 45.18685 (2000.0) a = 3.7010621 AU Inc. = 12.53082 n'= 0.13842500 q = 2.1584996 AU P = 7.120 years T = 1987 July 3.74657 TT Epoch = 1987 June 14.0 TT Peri. = 245.39308 e = 0.4178121 Node = 45.11015 (2000.0) a = 3.6953035 AU Inc. = 12.53412 n'= 0.13874870 q = 2.1513610 AU P = 7.104 years T = 1994 Oct. 27.31571 TT Epoch = 1994 Oct. 15.0 TT Peri. = 249.17163 e = 0.3996760 Node = 42.53772 (2000.0) a = 3.7919879 AU Inc. = 12.04153 n'= 0.13347615 q = 2.2764214 AU P = 7.384 years T = 2002 Mar. 22.91392 TT Epoch = 2002 Mar. 27.0 TT Peri. = 249.21782 e = 0.3979088 Node = 42.48404 (2000.0) a = 3.8035312 AU Inc. = 12.02775 n'= 0.13286898 q = 2.2900727 AU P = 7.418 years T = 2009 Aug. 17.15376 TT Epoch = 2009 Sept. 6.0 TT Peri. = 249.32343 e = 0.3995025 Node = 42.38521 (2000.0) a = 3.7967444 AU Inc. = 12.03138 n'= 0.13322540 q = 2.2799354 AU P = 7.398 years The predicted orbit for the 2024 return is as follows: T = 2024 Mar. 26.60681 TT Epoch = 2024 Mar. 31.0 TT Peri. = 250.40129 e = 0.4077743 Node = 41.34571 (2000.0) a = 3.7516835 AU Inc. = 12.07202 n'= 0.13563282 q = 2.2218435 AU P = 7.267 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1980/ 020820 644 0.3+ 0.5- 160426 C10 0.6- 1.3- 800809 413 0.4- 0.9- 020820 644 0.3+ 0.4- 160426 C10 1.2+ 1.5- 800928 413 1.9- 1.1- 020830 349 0.4- 0.8+ 160427 C10 2.2+ 1.0- 801002 413 1.1- 1.7+ 020830 349 0.6- 0.6- 160427 G96 0.2- 0.0 801003 413 3.0- 0.6+ 020830 349 1.2- 0.2+ 160427 G96 0.3- 0.3+ 801006 413 3.4- 0.4+ 020901 644 0.0 0.6- 160427 G96 0.4- 0.2+ 801006 323 0.2+ 1.6+ 020901 644 0.4+ 0.8- 160427 G96 0.2+ 0.2+ 801007 323 (9.0+ 12.2-) 020901 644 1.0- 1.7- 160428 C10 1.8- 0.6+ 1987/ 020912 360 0.1+ 0.6- 160428 C10 1.1- 1.9+ 870701 323 0.9+ 1.5+ 020912 360 0.0 0.7- 160508 G96 0.1+ 0.1+ 870702 323 1.5+ 2.8+ 020913 699 0.6+ 0.8+ 160508 G96 0.2+ 0.0 870702 323 1.2+ 0.7- 020913 699 0.8+ 0.6+ 160508 G96 0.1- 0.1- 870704 413 0.5- 0.2+ 020913 699 0.2- 1.0+ 160508 G96 0.0 0.0 870706 323 1.0+ 1.6+ 020913 699 0.6- 1.6+ 160510 G45 0.4- 0.2- 870718 323 1.9+ 0.7- 020914 608 0.5- 0.5+ 160510 G45 0.3- 0.4+ 870724 323 2.9+ 0.6- 020914 608 0.6- 0.5+ 160510 G45 0.2- 0.5+ 870731 323 (4.8+ 1.5-) 020914 608 0.7- 0.5+ 160510 G45 0.0 0.1+ 870818 323 2.5+ 2.2- 020917 644 0.2+ 0.6- 160510 G45 0.0 0.7- 870819 474 0.0 0.2- 020917 644 0.7+ 0.2- 160510 G45 0.1- 0.0 870819 474 0.8+ 0.3- 020917 644 0.2+ 0.1- 160510 G45 0.3- 0.4+ 870828 323 0.3- 2.3- 020917 644 0.1- 0.0 160513 G40 0.0 0.8+ 1994/ 020917 644 0.9+ 0.2+ 160513 G40 0.3- 0.7+ 940405 691 1.0- 0.1+ 020917 644 0.4+ 0.3- 160604 G45 0.1- 0.8- 940405 691 1.0- 0.4+ 020927 704 1.8+ 0.2+ 160604 G45 0.2+ 0.3- 940405 691 1.3- 0.8- 020927 704 1.0+ 1.2- 160604 G45 0.2+ 0.3- 940406 691 0.4- 0.2+ 020927 704 0.7+ 0.6+ 160604 G45 0.2+ 0.3+ 940406 691 0.3+ 0.4+ 021001 608 0.5+ 0.8- 160608 A77 1.5+ 0.0 940406 691 0.9- 0.1+ 021001 608 0.1+ 0.9- 160608 A77 1.5+ 0.6- 940502 691 1.1- 0.1- 021001 608 0.1- 0.7- 160608 A77 0.2+ 0.3- 940502 691 1.3- 0.3- 021001 204 0.7- 0.3+ 160623 215 0.6+ 0.7- 940502 691 1.1- 0.3- 021001 204 0.1+ 0.6- 160623 215 0.8+ 0.7- 940516 360 0.5- 0.3+ 021006 859 1.1+ 0.8+ 160623 215 0.5+ 1.1- 940516 360 0.6- 0.2- 021006 859 1.6- 0.5- 2017/ 940516 360 0.1+ 0.3+ 021006 859 0.4- 0.7- 170704 Q62 0.3+ 0.2- 940601 360 0.2- 0.3- 021009 699 1.9+ 0.3+ 170704 Q62 0.4+ 0.1+ 940601 360 0.0 0.1+ 021009 699 (2.3+ 1.1+) 170704 Q62 0.5+ 0.4+ 940612 691 0.4- 0.2- 021009 699 2.0+ 0.4+ 170823 A71 0.3+ 0.0 940612 691 0.5- 0.3- 021009 699 1.1+ 0.8+ 170824 A71 0.1+ 0.0 940612 691 0.5- 0.0 021011 360 0.9+ 0.4+ 170916 F51 0.1+ 0.1- 940711 360 0.5+ 0.9- 021011 360 1.5+ 0.5+ 170916 F51 0.1- 0.0 940711 360 0.8+ 0.3- 021128 360 0.4- 0.6- 170916 F51 0.2+ 0.0 1995/ 021128 360 0.2- 0.9- 170916 F51 0.0 0.0 950826 950 1.7- 0.9- 021128 360 0.4+ 0.3- 170925 F51 0.1+ 0.0 950826 950 2.0- 0.9- 2009/ 170925 F51 0.2+ 0.1+ 950826 950 2.0- 0.3- 090524 D25 0.8- 0.8- 170925 F51 0.1+ 0.1+ 950903 691 2.1- 0.2- 090524 D25 0.4- 0.2- 170925 F51 0.2+ 0.0 950903 691 2.2- 0.7- 090524 D25 0.1- 1.0- 170928 G96 0.5- 0.0 950903 691 2.1- 0.5- 090525 E16 0.8- 1.0- 170928 G96 0.8- 0.5+ 2001/ 090525 D25 0.4- 0.2- 170928 G96 0.7- 0.1+ 010426 829 1.5- 1.1- 090525 D25 0.1- 0.3+ 170928 G96 0.1- 0.2+ 010426 829 (2.6- 0.3+) 090525 D25 0.2+ 0.8- 170929 F51 0.1+ 0.1+ 010427 829 0.7- 1.0- 090531 E85 0.4- 0.0 170929 F51 0.1+ 0.0 010427 829 1.7- 0.6- 090531 E85 0.7- 0.6- 170929 F51 0.0 0.0 2002/ 090531 E85 0.2- 0.7- 171011 703 0.4- 0.6- 020814 704 2.2+ 0.5- 090603 D25 0.2+ 0.2- 171011 703 0.8- 0.9- 020814 704 0.7- 1.7+ 090719 415 0.7- 1.0- 171011 703 0.5+ 0.2+ 020814 704 0.4- 1.1- 090719 415 0.4- 0.2- 171014 215 0.3- 0.1+ 020814 704 0.0 0.0 090725 E85 0.2- 0.3- 171014 215 0.3- 0.0 020814 704 1.2- 0.1+ 090725 E85 0.3+ 0.5- 171014 215 0.3- 0.2+ 020815 699 0.0 0.5+ 090725 E85 0.6+ 0.4- 171017 G96 0.6+ 0.3- 020815 699 1.8- 0.4- 090919 D90 0.1- 0.3- 171017 G96 0.6+ 0.4+ 020815 699 1.5- 0.0 090919 D90 0.1+ 0.2- 171017 G96 0.6- 0.1+ 020815 699 1.5- 0.2+ 090919 D90 0.0 0.1- 171017 G96 0.2- 0.5+ 020819 360 0.8- 0.3- 091009 H06 0.8+ 0.1- 171026 703 (2.4- 1.7-) 020819 360 0.6- 0.3- 091009 H06 0.9- 0.1- 171026 703 1.9- 2.1- 020819 360 0.4- 0.0 091019 E12 0.2+ 0.6- 171026 703 1.4- 2.2- 020820 644 0.4+ 0.2- 2016/ 171026 703 0.9- 1.6- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2022 June 2