OAA computing section circular NK 788 42P/Neujmin 3
The following improved orbital elements, by S. Nakano, are from 61 observations 1929-1993, 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. Epoch = 1993 Nov. 29.0 TT T = 1993 Nov. 13.05247 +/- 0.00221 (m.e.) TT Peri. = 147.01093 +/- 0.00052 Node = 150.42555 +/- 0.00039 (2000.0) Inc. = 3.98672 +/- 0.00004 q = 2.0012387 +/- 0.0000095 AU e = 0.5860419 +/- 0.0000016 a = 4.8343991 +/- 0.0000060 AU n' = 0.09272361 +/- 0.00000017 P = 10.630 +/- 0.0000199 years A1 = +1.542 +/- 0.040 A2 = +0.05145 +/- 0.00149 T = 1929 June 28.61183 TT Epoch = 1929 July 8.0 TT Peri. = 140.76288 e = 0.5846315 Node = 159.16854 (2000.0) a = 4.9159281 AU Inc. = 3.67900 n'= 0.09042651 q = 2.0419215 AU P = 10.900 years [ T = 1940 May 13.86703 TT Epoch = 1940 May 11.0 TT Peri. = 141.03269 e = 0.5851518 Node = 159.07605 (2000.0) a = 4.8933872 AU Inc. = 3.68678 n'= 0.09105204 q = 2.0300127 AU P = 10.825 years ] T = 1951 May 26.83397 TT Epoch = 1951 June 3.0 TT Peri. = 144.80779 e = 0.5879742 Node = 156.84075 (2000.0) a = 4.9307239 AU Inc. = 3.75461 n'= 0.09001980 q = 2.0315856 AU P = 10.949 years [ T = 1961 Dec. 1.24792 TT Epoch = 1961 Dec. 7.0 TT Peri. = 147.65039 e = 0.5911866 Node = 151.29203 (2000.0) a = 4.8163285 AU Inc. = 3.84955 n'= 0.09324594 q = 1.9689794 AU P = 10.570 years ] T = 1972 May 16.51852 TT Epoch = 1972 May 3.0 TT Peri. = 146.95924 e = 0.5897155 Node = 150.85927 (2000.0) a = 4.8167615 AU Inc. = 3.88084 n'= 0.09323336 q = 1.9762425 AU P = 10.571 years [ T = 1982 Dec. 6.05397 TT Epoch = 1982 Dec. 17.0 TT Peri. = 145.19176 e = 0.5813495 Node = 150.34850 (2000.0) a = 4.9191178 AU Inc. = 3.93120 n'= 0.09033858 q = 2.0593912 AU P = 10.910 years ] The predicted orbit for the 2004 return is as follows: T = 2004 July 15.86435 TT Epoch = 2004 July 14.0 TT Peri. = 147.15740 e = 0.5850832 Node = 150.38524 (2000.0) a = 4.8558502 AU Inc. = 3.98537 n'= 0.09210987 q = 2.0147739 AU P = 10.700 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1929/ 510806 675 (1.7+ 3.4-) 720820 801 (2.8+ 0.6-) 290804 024 (3.1- 0.6+) 510807 662 0.6- 0.6+ 720912 691 0.1- 0.1- 290805 029 (3.8- 3.1+) 510807 662 1.3- 0.1- 720912 691 0.0 0.4- 290806 094 (5.1- 1.6-) 511104 711 0.5+ 0.7+ 1993/ 290806 024 2.5- 2.1+ 511104 711 2.3+ 0.4+ 930525 691 0.2- 0.7+ 290811 754 1.0+ 2.2- 1972/ 930525 691 1.0- 0.4- 290812 662 0.2- 0.3- 720417 691 (1.0+ 4.3+)Y 930526 691 1.1- 0.9- 290812 662 1.2+ 0.4+ 720417 691 0.7+ 0.4- 930526 691 0.5- 0.4+ 290812 662 1.1+ 1.8+ 720513 805 1.1+ 0.7+ 930526 691 0.7- 0.0 290813 662 0.4+ 2.0+ 720616 821 0.7- 0.9- 930623 691 1.8+ 0.4- 290813 024 1.9- 0.2- 720616 821 0.1- 0.9- 930623 691 0.1+ 0.1+ 290814 754 (3.4+ 0.3+) 720617 821 1.3+ 0.5+ 930623 691 0.9- 0.0 290815 754 1.9+ 0.9- 720617 821 0.8- 0.5- 930721 691 1.5+ 0.7- 290815 662 1.7- 2.1+ 720619 821 0.0 0.1- 930721 691 0.0 0.4+ 290815 662 (3.2- 0.4+) 720619 821 1.1- 0.5- 930721 691 1.2+ 0.9+ 290828 754 (6.2- 1.7+) 720708 821 1.0- 0.9- 930724 691 0.3+ 0.4- 290831 024 1.1+ 0.6- 720708 821 0.0 1.1- 930724 691 0.6+ 0.4- 290903 754 0.0 0.0 720709 821 0.2+ 0.8- 930724 691 0.3+ 0.3- 290904 662 1.8- 1.7+ 720709 821 1.5- 0.5- 930725 691 (0.3- 2.2-) 290909 754 (1.7+ 3.3+) 720714 691 0.9+ 1.3- 930725 691 0.3+ 0.5+ 1951/ 720714 691 1.0+ 1.0- 930725 691 0.4+ 0.2- 510505 672 0.4+ 0.3+ 720812 801 0.3+ 1.9- 930816 691 0.2- 0.1+ 510505 672 0.1- 0.5- 720814 801 0.6+ 0.4+ 930816 691 0.6- 0.0 510601 662 0.5- 0.4+ 720814 691 0.1+ 0.4+ 930816 691 0.7- 0.1+ 510601 662 0.6- 1.6- 720814 691 0.1- 0.2+ 510806 675 0.7+ 0.2- 720816 801 1.5+ 1.2+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2001 Apr. 28