OAA computing section circular NK 760 C/1999 J3 (LINEAR)

The following improved orbital elements, by S. Nakano, are from 170 observations 1999 May 12 to 2000 Feb. 28. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.71 arc second. Epoch = 1999 Sept.19.0 TT T = 1999 Sept.20.16598 +/- 0.00016 (m.e.) TT Peri. = 161.97929 +/- 0.00017 Node = 228.97892 +/- 0.00008 (2000.0) Inc. = 101.65610 +/- 0.00007 q = 0.9768097 +/- 0.0000032 AU e = 0.9993695 +/- 0.0000140 1/a = +0.0006454 +/- 0.0000144 1/AU origin = +0.001139 (Q= 6) future = +0.000919 A1 = +2.298 +/- 0.099 A2 = -0.56860 +/- 0.09466 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1999/ 990808 118 0.2- 0.5+ 991017 867 0.5+ 0.3+ 990512 704 1.4+ 0.1+ 990818 349 (2.1- 2.1+) 991017 349 0.0 0.4+ 990512 704 (0.8- 2.3+) 990828 352 (0.6- 2.3+) 991017 867 0.6+ 0.1+ 990512 704 0.4+ 0.0 990828 352 0.6- 1.1+ 991018 629 (0.6- 2.8-) 990512 704 (2.1+ 0.9+) 990828 352 0.6- 1.3+ 991018 629 (0.1+ 2.0-) 990513 046 0.6+ 0.8+ 990831 897 0.8- 0.6+ 991018 629 0.1+ 0.5- 990513 046 (0.7- 2.0+) 990831 897 0.5- 0.5+ 991018 629 1.0- 1.4- 990513 046 0.4+ 1.5+ 990904 349 0.4- 1.7+ 991018 629 1.5+ 1.9- 990514 784 0.6- 0.5+ 990904 349 1.3- 0.8+ 991018 629 0.6+ 1.1- 990514 784 0.3- 0.4+ 990904 540 (2.3- 2.8+) 991018 834 0.4+ 1.0- 990514 704 1.6- 0.1+ 990904 540 (0.3+ 2.8+) 991018 392 (2.8- 0.3+) 990514 704 0.8- 0.9- 990904 540 (1.3- 2.1+) 991018 392 (4.4- 0.9-) 990514 704 0.3- 0.1- 990904 540 (1.3- 2.0+) 991018 392 (4.1- 0.3+) 990514 704 0.4- 0.2- 990905 349 0.7- 0.2+ 991020 834 1.3+ 0.1+ 990514 704 0.2- 0.3- 990905 349 0.0 0.5+ 991020 349 0.7+ 0.4+ 990514 704 0.1+ 0.5+ 990905 349 0.1+ 1.6+ 991020 349 0.6+ 0.2- 990514 704 0.7- 0.2- 990911 355 0.8- 0.6+ 991020 349 0.1+ 0.4+ 990514 704 1.0- 0.7+ 990911 355 0.8- 0.8+ 991020 372 0.1- 0.8- 990514 704 0.2- 0.1- 990911 355 1.2- 0.7+ 991020 402 0.3+ 0.1- 990514 704 0.1+ 1.0- 990911 349 0.0 1.4+ 991020 402 0.1+ 0.7+ 990514 704 0.2- 0.5- 990913 106 1.0- 0.6- 991020 402 0.3+ 0.5- 990514 704 0.3+ 1.4- 990913 106 1.1- 0.7- 991020 360 0.3+ 0.2- 990514 704 0.2+ 0.5- 990913 106 0.3- 0.1- 991020 360 0.1+ 0.2- 990514 704 0.3+ 0.4- 990919 349 0.3- 0.2+ 991020 360 0.5+ 0.2+ 990514 360 0.1- 0.2+ 990919 349 0.2+ 0.4+ 991022 349 0.8+ 0.5+ 990514 360 0.2- 0.0 990919 349 0.1- 0.3+ 991022 349 0.2- 1.0+ 990514 360 0.2- 0.3+ 990920 349 0.4- 0.3+ 991022 349 0.5+ 0.5+ 990514 867 0.2- 0.4- 990920 349 0.6- 0.3+ 991023 351 (3.4- 1.4-) 990514 867 0.3+ 1.0- 990920 349 0.2- 0.7+ 991023 351 (2.7- 0.5-) 990514 867 0.1- 0.0 990926 349 0.4- 0.0 991024 349 0.7+ 0.4+ 990514 372 (2.1- 0.2-) 990926 349 0.7- 0.2- 991024 897 0.7- 1.5+ 990516 367 1.7- 0.6+ 990926 349 0.6- 0.2+ 991024 897 (1.0- 2.2+) 990516 367 0.4- 0.2+ 990927 349 0.1- 0.0 991024 897 1.1- 1.3+ 990516 367 0.0 0.6- 990927 349 0.1- 0.6+ 991024 349 0.1+ 0.1- 990516 367 0.4+ 0.4- 990927 349 0.5- 0.1+ 991024 349 1.3+ 0.8+ 990520 402 0.9- 0.8+ 990928 349 0.5+ 0.1+ 991026 834 1.4+ 0.1+ 990520 402 1.2- 0.5- 990928 349 0.5- 0.6+ 991031 467 0.6+ 0.4- 990520 402 1.2- 0.9- 990928 349 0.1+ 0.8+ 991031 467 1.5- 1.5+ 990520 897 1.4- 0.9+ 991004 897 0.3+ 0.4+ 991031 467 1.3- 1.0+ 990520 897 0.1+ 0.2- 991004 897 0.2- 0.1+ 991107 428 0.7+ 0.0 990520 897 (3.8- 0.4-) 991005 903 0.8- 1.0- 991107 428 0.3+ 0.1+ 990520 360 0.9- 0.9+ 991005 903 0.3- 0.9- 991107 428 0.3+ 0.0 990520 360 0.7- 0.8+ 991005 903 0.1- 0.4- 991109 834 0.3+ 0.1- 990520 360 0.5- 0.5+ 991005 372 1.1+ 0.8- 991109 834 0.9+ 0.5- 990520 372 0.6- 0.0 991008 349 0.5+ 0.2+ 991112 474 0.2- 1.7+ 990529 402 0.7- 0.8- 991008 349 0.3+ 0.3- 991112 474 0.7- 1.8+ 990529 402 0.5- 0.6- 991008 349 0.5+ 0.0 991112 474 (0.1+ 2.0+) 990529 402 1.2- 0.7- 991008 372 0.4+ 0.4+ 991115 474 1.5+ 1.6+ 990531 402 1.6- 0.3- 991010 355 0.0 0.1- 991115 474 (0.4+ 4.6+) 990531 402 0.4- 1.1- 991010 355 0.2- 0.4- 991117 834 0.6+ 0.5- 990609 360 1.0- 0.5- 991010 355 0.1- 0.2- 991117 834 0.8- 0.4- 990609 360 1.3- 0.7- 991010 349 0.2+ 0.4- 991120 834 0.3+ 0.4- 990609 360 1.2- 0.6- 991010 349 0.4+ 0.6- 991120 834 0.8+ 1.3- 990715 402 0.7+ 0.5- 991010 349 0.2- 0.0 991201 808 0.7+ 0.6+ 990715 402 0.3+ 0.9- 991011 897 1.2- 0.4- 991201 808 0.7- 0.3+ 990729 349 1.5+ 0.6+ 991011 897 1.1- 0.3- 991204 808 0.9- 0.2+ 990731 349 1.0+ 0.0 991014 834 1.7+ 0.6+ 991204 808 (2.7+ 1.3-) 990731 349 0.3+ 1.1+ 991014 834 0.3+ 0.1- 991205 808 0.9- 0.0 990803 402 0.1+ 0.5+ 991014 834 0.9+ 0.2- 991205 808 1.4- 0.7+ 990803 402 0.8+ 0.9+ 991016 629 (5.5- 7.8-) 991205 428 0.5+ 0.1- 990803 402 0.5+ 0.5+ 991016 629 (1.4- 9.5-) 991206 808 0.2- 0.2+ 990804 118 0.5- 0.7+ 991016 629 (2.4- 7.5-) 991206 808 1.6+ 0.8+ 990804 118 0.4- 0.1+ 991016 834 0.2+ 0.8- 2000/ 990804 118 0.2- 0.2- 991017 349 0.2+ 0.0 000228 413 1.6+ 0.0 990808 118 0.3- 0.8+ 991017 372 (0.2+ 3.3+) 000228 413 1.3+ 0.3- 990808 118 0.3+ 0.6+ 991017 349 0.0 0.5+ 000228 413 1.1+ 0.1- ( ) -------- Rejected Obs.

Director, Computing Section Syuichi Nakano 2000 Dec. 21

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