Nakano Note (Nakano wa Kangaeru noda) NK 2292 42P/Neujmin 3

The following improved orbital elements, by S. Nakano, are from 128 observations 1929 to 2004, 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 +/- 0.94 arc second. See the previous orbits in NK 540, NK 788 and NK 1018 (= HICQ 2004). Epoch = 2004 July 14.0 TT T = 2004 July 15.94750 +/- 0.00056 (m.e.) TT Peri. = 147.16110 +/- 0.00046 Node = 150.38545 +/- 0.00037 (2000.0) Inc. = 3.98554 +/- 0.00004 q = 2.0148564 +/- 0.0000036 AU e = 0.5850713 +/- 0.0000009 a = 4.8559105 +/- 0.0000028 AU n' = 0.09210815 +/- 0.00000008 P = 10.701 +/- 0.0000092 years A1 = +1.225 +/- 0.028 A2 = +0.03537 +/- 0.00029 T = 1929 June 28.61343 TT Epoch = 1929 July 8.0 TT Peri. = 140.76434 e = 0.5846302 Node = 159.16787 (2000.0) a = 4.9159471 AU Inc. = 3.67921 n'= 0.09042599 q = 2.0419358 AU P = 10.900 years [ T = 1940 May 13.87189 TT Epoch = 1940 May 11.0 TT Peri. = 141.03471 e = 0.5851500 Node = 159.07539 (2000.0) a = 4.8933993 AU Inc. = 3.68699 n'= 0.09105171 q = 2.0300268 AU P = 10.825 years ] T = 1951 May 26.83813 TT Epoch = 1951 June 3.0 TT Peri. = 144.81049 e = 0.5879711 Node = 156.84009 (2000.0) a = 4.9307349 AU Inc. = 3.75482 n'= 0.09001950 q = 2.0316054 AU P = 10.949 years [ T = 1961 Dec. 1.25803 TT Epoch = 1961 Dec. 7.0 TT Peri. = 147.65293 e = 0.5911828 Node = 151.29235 (2000.0) a = 4.8163456 AU Inc. = 3.84976 n'= 0.09324544 q = 1.9690050 AU P = 10.570 years ] T = 1972 May 16.52528 TT Epoch = 1972 May 3.0 TT Peri. = 146.96230 e = 0.5897107 Node = 150.85962 (2000.0) a = 4.8167730 AU Inc. = 3.88106 n'= 0.09323303 q = 1.9762705 AU P = 10.571 years [ T = 1982 Dec. 6.05128 TT Epoch = 1982 Dec. 17.0 TT Peri. = 145.19485 e = 0.5813410 Node = 150.34878 (2000.0) a = 4.9191508 AU Inc. = 3.93142 n'= 0.09033767 q = 2.0594465 AU P = 10.910 years ] T = 1993 Nov. 13.07370 TT Epoch = 1993 Nov. 29.0 TT Peri. = 147.01404 e = 0.5860308 Node = 150.42576 (2000.0) a = 4.8344678 AU Inc. = 3.98689 n'= 0.09272163 q = 2.0013210 AU P = 10.630 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1929/ 720912 691 1.5- 0.3- 040710 130 0.5+ 0.5+ 290804 024 2.7- 0.4+ 720912 691 1.4- 0.6- 040710 048 0.5- 0.8+ 290805 029 (3.4- 3.0+) 1993/ 040710 130 0.4- 0.7+ 290806 094 (4.6- 1.8-) 930525 691 (4.5- 1.8+)S 040710 048 0.1- 0.0 290806 024 2.0- 2.0+ 930525 691 (5.4- 0.7+)S 040713 360 0.1- 0.0 290811 754 1.4+ 2.3- 930526 691 (5.4- 0.2+)S 040713 360 0.2- 0.0 290812 662 0.2+ 0.4- 930526 691 (4.9- 1.5+)S 040714 415 0.1- 0.3- 290812 662 1.6+ 0.3+ 930526 691 (5.0- 1.1+)S 040714 415 0.2+ 0.4- 290812 662 1.5+ 1.7+ 930623 691 1.6- 0.3+ S 040714 415 0.3- 0.4- 290813 662 0.9+ 2.0+ 930623 691 (3.3- 0.8+)S 040714 213 0.3- 1.0- 290813 024 1.5- 0.3- 930623 691 (4.3- 0.7+)S 040714 213 1.0- 0.3+ 290814 754 (3.9+ 0.3+) 930721 691 0.4+ 0.8- S 040715 704 1.2+ 1.5+ 290815 754 2.3+ 1.0- 930721 691 1.1- 0.3+ S 040715 704 0.2- 0.4- 290815 662 1.3- 2.0+ 930721 691 0.1+ 0.8+ S 040715 704 0.7- 1.0- 290815 662 2.7- 0.3+ 930724 691 0.5- 0.7- S 040715 415 0.0 0.4- 290828 754 (5.7- 1.7+) 930724 691 0.2- 0.6- S 040715 415 0.0 0.5- 290831 024 1.6+ 0.5- 930724 691 0.5- 0.5- S 040715 415 0.2+ 0.7- 290903 754 0.5+ 0.1+ 930725 691 (1.0- 2.5-)S 040716 704 0.8+ 1.7+ 290904 662 1.4- 1.8+ 930725 691 0.4- 0.2+ S 040716 704 1.4+ 0.3- 290909 754 (2.1+ 3.5+) 930725 691 0.3- 0.5- S 040716 704 0.4- 1.4+ 1951/ 930816 691 1.7+ 0.9- S 040716 704 1.8- 1.9- 510505 672 0.3+ 0.1- 930816 691 1.3+ 1.1- S 040716 215 0.1- 0.5- 510505 672 0.2- 0.9- 930816 691 1.2+ 1.0- S 040716 215 0.1+ 0.6- 510601 662 0.2- 0.3+ 2003/ 040716 215 0.0 0.0 510601 662 0.2- 1.8- 030312 568(19.7- 8.3+) 040717 048 0.0 0.1- 510806 675 0.9+ 0.0 030501 568(18.7- 7.5+) 040717 048 0.5+ 0.2+ 510806 675 (1.9+ 3.1-) 030501 568(19.5- 8.0+) 040718 704 1.5+ 1.8+ 510807 662 0.5- 0.8+ 030527 568(18.0- 6.4+) 040718 704 0.1- 1.8+ 510807 662 1.2- 0.1+ 030528 568(17.9- 6.5+) 040718 704 0.9+ 0.7- 511104 711 0.2- 1.2+ 2004/ 040718 704 0.8+ 0.8- 511104 711 1.6+ 0.9+ 040517 704 (5.6- 1.2+) 040718 704 0.4- 1.5- 1972/ 040517 704 (5.4- 0.1-) 040719 415 0.8+ 0.3- 720417 691 (0.6+ 3.8+)Y 040517 704 (5.9- 0.6-) 040719 415 1.0+ 0.4- 720417 691 0.3+ 1.0- 040625 213 1.9- 0.2+ 040719 415 0.3+ 0.5- 720513 805 1.4+ 0.4+ 040626 213 1.6- 1.0+ 040719 048 (2.2+ 1.0+) 720616 821 0.0 1.0- 040627 213 (2.5- 0.6-) 040719 048 1.4+ 0.9+ 720616 821 0.6+ 1.1- 040627 213 2.1- 0.4+ 040719 048 0.6+ 0.9+ 720617 821 2.0+ 0.4+ 040629 213 1.3- 1.0+ 040719 048 0.2+ 0.5+ 720617 821 0.1- 0.6- 040629 213 0.8- 0.1+ 040720 415 0.7+ 0.6- 720619 821 0.7+ 0.3- 040629 213 1.3- 0.1- 040720 415 0.6+ 0.6- 720619 821 0.4- 0.6- 040706 048 1.2- 0.4+ 040720 415 0.5+ 0.7- 720708 821 0.6- 1.1- 040706 048 0.2- 0.5+ 040721 048 0.6+ 0.1+ 720708 821 0.4+ 1.2- 040706 048 0.4+ 0.6+ 040721 048 0.3- 0.3- 720709 821 0.6+ 0.9- 040706 048 0.2- 0.0 040721 048 0.8- 0.3+ 720709 821 1.1- 0.7- 040707 213 0.4- 0.8+ 040721 048 0.7- 0.4+ 720714 691 1.1+ 1.4- 040707 213 0.9- 0.9+ 040721 048 0.1- 1.0+ 720714 691 1.3+ 1.2- 040707 213 0.0 0.2+ 040721 048 0.2- 0.4+ 720812 801 0.3- 2.1- 040708 213 0.6- 0.1+ 040726 415 0.4+ 0.9- 720814 801 0.0 0.2+ 040708 213 0.3- 0.2+ 040726 415 0.8+ 0.4- 720814 691 0.6- 0.1+ 040708 213 0.2+ 0.4+ 040726 415 0.6+ 0.3- 720814 691 0.7- 0.0 040710 048 0.3- 0.4+ 040727 415 1.6+ 0.4- 720816 801 0.8+ 0.9+ 040710 048 1.4- 0.7+ 040727 415 2.1+ 0.1- 720820 801 1.9+ 0.8- 040710 048 0.5- 0.4+ 040727 415 1.3+ 0.7- ( ) -------- Rejected Obs.

Associate of Central Bureau for Astronomical Telegrams Late edition Syuichi Nakano 2004 Aug. 4

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