OAA computing section circular NK 1457 104P/Kowal 2
The following improved orbital elements, by S. Nakano, are from 458 observations 1991 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 +/- 1.02 arc seconds. See previous orbits in NK 621, NK 784, NK 960 ( = HICQ 2004) and NK 1023. Epoch = 2004 Apr. 25.0 TT T = 2004 May 9.16015 +/- 0.00166 (m.e.) TT Peri. = 192.04071 +/- 0.00042 Node = 246.08548 +/- 0.00009 (2000.0) Inc. = 15.48941 +/- 0.00001 q = 1.3958895 +/- 0.0000016 AU e = 0.5853884 +/- 0.0000015 a = 3.3667399 +/- 0.0000038 AU n' = 0.15954740 +/- 0.00000027 P = 6.178 +/- 0.0000105 years A1 = +0.607 +/- 0.061 A2 = -0.51651 +/- 0.00119 T = 1991 Nov. 4.43065 TT Epoch = 1991 Oct. 31.0 TT Peri. = 189.55847 e = 0.5642855 Node = 247.78367 (2000.0) a = 3.4421919 AU Inc. = 15.82971 n'= 0.15433039 q = 1.4998130 AU P = 6.386 years T = 1998 Mar. 2.16498 TT Epoch = 1998 Mar. 8.0 TT Peri. = 191.90422 e = 0.5852812 Node = 246.14734 (2000.0) a = 3.3674739 AU Inc. = 15.48917 n'= 0.15949524 q = 1.3965548 AU P = 6.180 years The predicted orbit for the 2010 return is as follows: T = 2010 May 4.63517 TT Epoch = 2010 May 4.0 TT Peri. = 200.55466 e = 0.6381482 Node = 235.51626 (2000.0) a = 3.2600350 AU Inc. = 10.26843 n'= 0.16744442 q = 1.1796494 AU P = 5.886 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1991/ 970809 897 0.2- 0.9- 971022 360 0.7+ 0.7+ 911212 875 2.1- 0.2+ 970809 897 1.8- 1.4- 971022 360 0.5+ 0.7+ 911213 875 0.6- 0.6+ 970809 046 0.7- 0.9- 971022 118 1.4+ 0.4+ 911213 875 (3.3- 1.9-) 970810 046 0.7- 0.8- 971022 118 0.9+ 1.0+ 911213 875 1.8- 0.6+ 970810 046 0.9- 0.9- 971023 867 0.6+ 0.6+ 911215 411 (1.5- 2.8+) 970810 118 0.9- 0.9- 971023 867 0.5+ 0.5+ 911215 411 0.1+ 0.8- 970810 118 0.9- 0.8- 971023 867 0.7+ 0.5+ 911215 411 (4.0- 1.6+) 970810 118 1.4- 0.9- 971026 897 2.0+ 0.0 911215 411 1.8- 0.3- 970810 118 1.3- 1.0- 971026 897 1.7+ 0.6+ 911215 411 0.6+ 0.7+ 970810 557 0.5- 0.8- 971026 897 1.4+ 0.5+ 911216 381 0.9+ 1.2+ 970810 557 0.8- 0.8- 971027 605 1.9+ 0.6+ 911216 896 (3.7- 1.4-) 970810 557 0.7- 0.8- 971027 605 2.0+ 0.1- 911216 896 (3.3- 1.5+) 970811 402 0.6- 0.8- 971027 605 1.4+ 0.2- 911216 411 1.4- 0.2- 970811 402 1.1- 1.1- 971028 352 1.7+ 0.4+ 911216 896 (2.2+ 7.8-) 970811 402 0.7- 1.0- 971028 352 1.5+ 0.4+ 911216 411 (4.1- 3.8+) 970814 118 0.6- 0.4- 971028 352 2.4+ 0.4+ 911216 897 1.2+ 0.5+ 970815 118 0.9- 0.9- 971029 402 1.3+ 0.7+ 911216 411 (2.7- 0.8+) 970815 118 0.5- 0.8- 971029 402 1.4+ 0.5+ 911216 411 1.5- 0.2+ 970817 402 0.8- 0.5- 971029 402 1.3+ 0.6+ 911216 411 1.7- 2.2+ 970817 402 0.7- 0.6- 971030 504 1.7+ 0.6+ 911216 897 0.4- 2.2+ 970819 118 0.1+ 0.4- 971030 504 1.3+ 0.7+ 911217 372 (3.1- 1.4+) 970819 118 0.7+ 0.6- 971030 504 1.2+ 0.8+ 911217 372 2.0- 1.7+ 970821 118 1.2- 1.0- 971030 504 0.9+ 0.3+ 911217 372 1.7- 1.9+ 970821 118 1.0- 1.0- 971030 504 1.1+ 0.4+ 911217 372 (4.1- 0.8+) 970822 118 0.4- 0.3- 971030 504 1.1+ 0.8+ 911218 411 1.9- 1.3+ 970822 118 0.5- 0.4- 971030 504 1.0+ 0.6+ 911218 411 0.4+ 1.5+ 970822 118 0.3- 0.2- 971030 504 1.2+ 0.7+ 911218 411 (1.4- 3.0+) 970823 108 0.3- 0.1+ 971030 504 1.0+ 0.8+ 911218 411 0.1+ 2.1+ 970823 108 0.1+ 0.4+ 971031 605 2.1+ 0.1+ 911218 411 (3.2- 2.8+) 970823 108 0.2- 0.4+ 971031 605 (2.6+ 0.1+) 911218 411 (3.0- 2.3+) 970824 402 0.6- 0.9- 971031 605 1.3+ 0.5+ 911219 411 (0.8- 4.9+) 970824 402 0.3- 0.3- 971103 402 1.2+ 0.1+ 911219 411 1.0- 1.4+ 970824 402 0.4- 0.3- 971103 402 1.0+ 0.0 911219 411 (2.9- 0.2+) 970824 118 0.5- 0.7- 971104 900 0.7+ 0.2+ 911219 411 0.3- 0.4+ 970824 118 0.8- 0.5- 971104 900 1.3+ 0.8+ 911219 411 0.0 0.6+ 970824 118 0.8- 0.6- 971104 046 0.9+ 0.3+ 911221 413 0.8+ 0.3- 970825 118 1.4- 0.8- 971104 046 0.8+ 0.0 911221 413 1.0+ 0.6- 970825 118 1.5- 0.6- 971104 046 1.2+ 0.2+ 911229 372 0.2- 0.6- 970826 360 0.5- 0.0 971105 360 0.9+ 0.0 911229 372 0.8- 2.0- 970826 360 0.7- 0.0 971105 360 1.1+ 0.1+ 911230 411 0.1- 0.1+ 970827 118 1.4- 0.5- 971105 402 0.9+ 0.1+ 911230 411 0.2- 1.8+ 970827 118 1.5- 0.8- 971105 402 1.4+ 0.1+ 911230 411 1.5- 0.2+ 970827 118 1.5- 0.5- 971105 402 0.8+ 0.1+ 911230 411 0.6- 0.7- 970827 118 1.8- 0.6- 971106 897 0.6+ 0.3+ 911230 411 1.3- 2.3+ 970828 352 1.1- 0.9- 971106 897 1.8+ 0.5+ 911230 411 0.5+ 0.0 970828 352 1.5- 0.8- 971109 352 2.1+ 1.5+ 911230 372 0.8- 2.4- 970828 352 1.8- 0.5- 971109 352 1.7+ 0.3- 1992/ 970828 360 0.4- 0.1+ 971109 352 2.0+ 0.8+ 920101 801 1.1+ 1.9- 970828 360 0.5- 0.1+ 971112 658 0.7+ 0.0 920101 801 1.3- 1.0- 970828 867 0.8- 0.3- 971112 658 0.7+ 0.1- 920102 411 0.4- 0.1+ 970828 867 1.2- 0.6- 971112 658 0.4+ 0.1- 920102 411 0.5+ 0.6+ 970831 118 1.6- 1.1- 971118 897 (2.2+ 2.6+) 920102 411 0.4+ 0.2- 970831 118 1.5- 1.2- 971118 897 1.8+ 2.3+ 920102 411 1.0- 0.6- 970831 605 1.2- 1.3- 971118 347 2.1+ 0.8+ 920102 411 0.4- 0.9+ 970831 605 1.4- 1.2- 971118 347 2.0+ 1.7+ 920102 411 0.5+ 0.5- 970901 605 1.3- 1.5- 971119 900 2.4+ 1.5+ 920102 897 0.7+ 0.1- 970901 605 1.7- 0.9- 971119 900 (2.8+ 1.2+) 920102 897 (1.3+ 2.5-) 970901 118 0.6- 0.5- 971120 360 1.5+ 1.0+ 920103 372 1.1- 0.9- 970901 118 0.8- 0.3- 971120 360 1.4+ 1.0+ 920103 372 1.2- 0.7+ 970902 897 1.2- 0.4- 971120 402 1.5+ 0.9+ 920104 373 1.2+ 1.3- 970902 897 1.1- 0.7- 971120 402 1.8+ 1.0+ 920104 373 0.8+ 1.3- 970903 118 0.6- 0.2- 971120 402 1.9+ 1.0+ 920104 411 0.9+ 0.8- 970903 118 0.6- 0.3- 971120 118 2.4+ 1.1+ 920104 411 0.6- 1.2- 970903 118 0.7- 0.5- 971120 118 (3.1+ 1.6+) 920104 411 0.0 0.2- 970903 118 0.7- 0.4- 971124 403 0.8+ 1.1+ 920104 411 2.3- 1.5- 970904 118 0.9- 0.7- 971124 403 1.0+ 1.9+ 920104 411 0.3- 1.1- 970904 118 0.9- 0.5- 971124 403 (2.7+ 1.7+) 920104 411 1.5- 1.6- 970905 118 0.2- 0.7- 971130 347 1.7+ 0.0 920104 411 0.4- 2.1- 970905 118 0.2- 0.6- 971130 347 2.3+ 1.1+ 920106 801 1.0- 1.7- 970905 118 0.3- 0.6- 971202 897 1.6+ 1.4+ 920106 801 0.4+ 1.6- 970906 605 1.0- 0.5- 971202 897 1.9+ 1.6+ 920107 657 (0.6+ 2.5-) 970906 605 0.0 0.9+ 971202 897 1.5+ 1.3+ 920107 657 1.3+ 2.0- 970906 605 1.0- 0.7- 971204 360 1.6+ 1.5+ 920107 657 1.4+ 2.1- 970907 118 0.4- 0.5- 971204 360 1.7+ 1.5+ 920110 411 0.8- 0.2- 970907 118 0.2- 0.4- 971216 605 (1.3+ 3.0+) 920110 411 1.5- 0.7+ 970909 360 0.2- 0.1- 971216 605 (3.3+ 4.5+) 920110 411 0.1+ 0.8- 970909 360 0.2- 0.2- 971216 605 (0.8+ 4.7+) 920205 801 0.5+ 1.9- 970910 658 0.9- 0.3- 971220 426 (2.5+ 1.9+) 920205 801 0.4+ 1.9- 970910 658 0.6- 0.3- 971220 426 (2.6+ 1.6+) 920207 801 0.8+ 2.3- 970910 046 0.1+ 0.3- 971220 426 1.3+ 1.5+ 920207 801 0.7+ 2.4- 970910 046 0.5- 0.2- 971221 347 (2.6+ 1.6+) 920207 658 (0.1- 3.6-) 970910 046 0.3- 0.6- 971221 347 2.0+ 1.7+ 920207 658 0.4- 2.4- 970910 605 2.0- 1.0- 971221 347 (2.5+ 2.6+) 920210 897 0.4+ 1.8- 970910 605 1.7- 1.4- 971221 897 1.4+ 1.3+ 920222 411 2.0+ 2.3- 970910 605 1.0- 1.5- 971221 897 1.9+ 1.7+ 920222 411 2.2+ 2.0- 970910 605 1.7- 0.8- 971221 897 1.8+ 2.2+ 920222 411 1.3+ 1.8- 970910 118 0.4- 0.4- 971224 360 1.7+ 0.5+ 920222 411 1.5+ 2.4- 970910 118 0.2- 0.2- 971224 360 1.8+ 0.5+ 920301 801 (2.5+ 0.3-) 970910 118 0.7- 0.6- 971231 897 1.4+ 1.6+ 920301 801 2.3+ 0.3+ 970912 046 0.0 0.1- 971231 897 2.1+ 2.2+ 920306 411 0.5+ 0.5+ 970912 046 0.2+ 0.3- 971231 046 1.2+ 0.9+ 920312 658 0.7+ 1.4- 970912 046 0.2+ 0.3- 971231 046 0.8+ 0.9+ 920312 658 0.9+ 1.3- 970915 118 0.3- 0.8- 971231 046 0.9+ 1.0+ 920312 658 0.7+ 1.3- 970915 118 0.4- 0.9- 1998/ 920313 658 1.2+ 1.3- 970916 118 0.1- 0.2- 980108 118 2.2+ 0.8+ 920313 658 1.3+ 1.3- 970916 118 0.3- 0.6- 980108 118 (2.8+ 1.2+) 920313 658 1.3+ 1.1- 970916 118 0.3- 0.5- 980109 143 (1.4- 2.9-) 920322 897 (1.7+ 2.9-) 970917 118 0.3- 0.8- 980109 143 1.9+ 0.2+ 920322 411 (2.5+ 2.1-) 970917 118 0.6- 0.8- 980109 143 1.1- 1.3+ 920322 411 (2.6+ 1.1-) 970918 118 1.1- 0.4- 980109 143 (2.1- 3.9-) 920322 897 (3.2+ 2.3-) 970918 118 1.0- 0.6- 980109 143 0.4- 0.8- 920322 411 (2.7+ 1.2-) 970919 118 1.1- 0.7- 980111 046 1.0+ 0.5+ 920401 801 (3.4+ 1.4-) 970919 118 1.1- 0.7- 980111 046 1.1+ 1.0+ 920401 801 (2.7+ 1.6-) 970919 897 1.3- 0.6- 980111 046 0.8+ 1.0+ 920430 801 (3.3+ 1.6-) 970919 897 0.4- 0.4- 980119 355 1.7+ 1.4+ 920430 801 (3.7+ 2.8-) 970919 897 0.4- 0.4- 980119 355 2.0+ 1.6+ 1997/ 970919 108 0.0 0.9+ 980120 402 0.7+ 0.9+ 970514 696 0.1+ 0.7+ 970919 108 1.6+ 0.5+ 980120 402 0.5+ 0.8+ 970514 696 0.5- 1.1+ 970920 118 0.3+ 0.6- 980120 402 0.3+ 0.7+ 970514 696 1.1- 0.7+ 970920 118 0.4+ 0.6- 980120 897 1.5+ 1.2+ 970515 696 0.3- 1.5- 970920 118 0.3+ 0.5- 980120 897 0.7+ 1.1+ 970515 696 0.5- 1.9- 970920 605 0.7- 0.5- 980125 347 (0.3+ 2.8+) 970515 696 0.7- 1.7- 970920 605 0.5+ 0.0 980125 347 0.6+ 2.3+ 970531 402 0.4- 0.0 970920 605 0.2+ 0.8- 980126 897 1.6+ 0.9+ 970531 402 0.6- 0.1- 970921 118 0.0 0.4- 980126 897 (3.4+ 1.7+) 970531 402 2.0- 1.5+ 970921 118 0.2+ 0.5- 980126 897 0.9+ 1.4+ 970607 402 0.1- 0.9+ 970921 118 0.1+ 0.6- 980126 118 1.9+ 0.0 970607 402 0.6- 0.6+ 970922 046 0.1+ 0.5- 980126 118 1.2+ 0.6+ 970607 402 0.2- 0.8+ 970922 046 0.2+ 0.5- 980129 360 0.5+ 1.3+ 970612 402 0.0 0.3+ 970922 046 0.3+ 0.6- 980129 360 0.3+ 1.3+ 970612 402 0.8- 0.1+ 970925 605 0.2- 1.0- 980131 355 0.6- 1.3+ 970612 402 1.1- 0.7+ 970925 605 0.3+ 1.0- 980131 355 0.5- 1.0+ 970629 402 0.2- 0.9+ 970925 605 0.6- 1.2- 980204 118 0.9- 1.0+ 970629 402 0.7- 0.1+ 970926 118 0.3- 0.3+ 980204 118 0.9- 1.0+ 970629 402 0.4- 0.3- 970926 118 0.1- 0.2+ 980205 046 0.5- 0.7+ 970629 360 0.9- 0.2+ 970927 118 0.3- 0.0 980205 046 0.2- 1.0+ 970629 360 0.3- 0.5+ 970927 118 0.2- 0.2- 980205 046 0.0 0.9+ 970703 402 0.0 1.0+ 970928 900 0.1- 0.5- 980218 605 (2.2+ 2.8+) 970703 402 0.6- 0.3+ 970928 900 0.0 0.2+ 980218 605 1.0- 1.7+ 970703 402 0.2- 0.5+ 970928 352 0.4+ 0.7- 980218 605 (1.2+ 2.7+) 970704 867 1.5- 0.6- 970928 352 1.0+ 0.1+ 980220 118 1.4- 1.1+ 970704 867 2.1- 0.9- 970928 352 0.4+ 0.0 980220 118 1.2- 1.0+ 970705 360 0.2- 0.5+ 970928 402 0.2- 0.2- 980222 118 1.2- 0.7+ 970705 360 0.4- 0.6+ 970928 402 0.0 0.3- 980227 118 2.1- 1.8+ 970711 696 0.3+ 1.0+ 970928 402 0.1+ 0.3- 980227 118 1.1- 1.1+ 970711 696 0.2+ 0.5+ 970929 360 0.1- 0.3+ 980302 897 0.6+ 2.4+ 970711 696 0.0 0.9+ 970929 360 0.3- 0.1- 980302 897 1.3- 0.9+ 970711 696 0.3+ 1.1+ 970929 118 0.2- 0.3- 980302 897 1.9- 2.2+ 970714 696 0.2+ 0.4+ 970929 118 0.5- 0.2- 980302 360 (2.8- 1.2+) 970714 696 0.4+ 0.5+ 971001 867 0.2+ 0.4- 980302 897 (0.6+ 2.9+) 970714 696 0.1+ 0.5+ 971001 867 0.2- 0.2- 980302 360 (3.4- 0.9+) 970714 696 0.1+ 0.4+ 971001 867 0.1- 0.6- 980309 046 (3.1- 1.0+) 970714 696 0.2+ 0.4+ 971003 108 1.3+ 0.8- 980309 046 (3.6- 0.8+) 970718 402 0.7- 0.2- 971003 108 1.2+ 1.6- 980309 046 (3.4- 0.1-) 970718 402 0.8- 0.5- 971003 108 0.1+ 0.8- 980311 118 (3.7- 1.6+) 970718 402 1.1- 0.2+ 971004 046 0.4+ 0.0 980311 118 (3.1- 1.3+) 970723 118 0.8- 0.4- 971004 046 0.1- 0.1+ 980318 360 (5.3- 0.6+) 970723 118 0.2- 0.1- 971004 046 0.3+ 0.1+ 980318 360 (5.4- 0.6+) 970726 118 0.9- 0.3- 971005 469 0.4- 1.1- 980322 118 (4.3- 1.2+) 970727 118 0.7- 0.5- 971005 469 0.5+ 0.3+ 980322 118 (4.7- 0.7+) 970728 118 0.9- 0.7- 971005 616 (3.1- 0.9-) 2003/ 970728 118 1.1- 0.7- 971005 616 1.6- 0.5- 030831 291 1.0- 1.0- 970728 691 0.2- 1.1- 971005 616 1.2- 1.1- 030831 291 0.8- 1.1- 970728 691 0.3- 0.9- 971006 118 0.6+ 0.2+ 030831 291 0.9- 2.2- 970801 360 0.5- 1.0- 971006 118 0.7+ 0.0 030921 291 0.1+ 0.9- 970801 360 0.5- 0.9- 971013 118 0.4+ 0.6+ 030921 291 0.2+ 0.7- 970802 118 1.1- 1.3- 971013 118 0.6+ 0.1- 030921 291 0.8+ 1.0- 970802 118 1.1- 1.3- 971013 118 0.2+ 0.4+ 030928 291 1.1+ 0.5- 970802 402 0.6- 0.8- 971016 118 0.6+ 1.6+ 030928 291 0.5+ 0.4- 970802 402 0.5- 1.1- 971016 118 1.1+ 1.6+ 030928 291 0.8+ 1.1- 970804 118 1.1- 1.1- 971017 118 1.0+ 1.0+ 031117 360 1.5+ 0.1+ 970804 118 0.8- 1.1- 971017 118 0.6+ 0.8+ 031117 360 1.9+ 0.9+ 970804 118 0.5- 1.5- 971017 118 0.9+ 0.7+ 031117 360 0.9+ 0.4+ 970804 118 0.1- 0.9- 971017 046 0.8+ 1.1+ 031123 360 0.1+ 1.3+ 970804 118 0.6- 1.0- 971017 046 1.1+ 0.9+ 031123 360 0.7- 0.1+ 970804 118 0.4- 1.4- 971017 046 0.8+ 1.3+ 031123 360 1.2+ 0.7+ 970805 118 0.9- 1.2- 971018 108 (0.5- 2.9+) 031208 204 1.1+ 1.6+ 970805 118 0.9- 1.3- 971018 108 0.4- 2.0+ 031208 204 0.3- 0.6+ 970805 118 1.0- 0.9- 971018 108 0.1+ 0.6- 031214 360 0.5+ 0.2+ 970806 118 1.0- 1.2- 971018 118 1.2+ 0.6+ 031214 360 0.1+ 0.5+ 970806 118 1.2- 1.4- 971018 118 1.3+ 0.7+ 031214 360 1.4- 0.9+ 970808 118 1.2- 1.9- 971018 108 1.6+ 1.4+ 2004/ 970808 118 1.3- 2.2- 971018 605 0.8+ 1.3+ 040105 204 1.8- 0.9+ 970808 118 0.3- 0.8- 971018 605 1.4+ 0.9+ 040218 A33 (9.4- 2.8-) 970808 118 0.6- 0.8- 971019 118 0.7+ 0.4+ 040220 A33 (8.0- 1.6-) 970808 118 0.4- 0.7- 971019 118 1.1+ 0.6+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2007 Apr. 10