OAA computing section circular NK 707 P/1992 Q1 (Brewington)
The following improved orbital elements, by S. Nakano, are from 82 observations 1992 Aug. 28 to 1993 Mar. 30. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.97 arc second. See a previous vesion on MPC 22571 (1993). Epoch = 1992 June 27.0 TT T = 1992 June 7.79246 +/- 0.00190 (m.e.) TT Peri. = 47.83602 +/- 0.00064 Node = 343.73580 +/- 0.00030 (2000.0) Inc. = 18.05788 +/- 0.00006 q = 1.6009777 +/- 0.0000122 AU e = 0.6707263 +/- 0.0000216 a = 4.8621489 +/- 0.0000660 AU n' = 0.09193094 +/- 0.00000187 P = 10.721 +/- 0.0002181 years (+/- 0.08 day) The predicted orbit for the 2003 return is as follows: T = 2003 Feb. 18.84304 TT Epoch = 2003 Feb. 10.0 TT Peri. = 48.00581 e = 0.6716236 Node = 343.64352 (2000.0) a = 4.8430848 AU Inc. = 18.05961 n'= 0.09247428 q = 1.5903547 AU P = 10.658 years The following residuals in seconds of arc are from the above orbital elements: 1992/ 920925 801 1.4+ 0.4- 921030 897 (9.7- 4.8-)Y 920828 402 1.7- 1.9+ 920925 372 0.0 0.1- 921030 897 (5.9- 2.8+)Y 920828 402 (3.6- 0.6+) 920925 372 1.4- 0.2- 921030 411 0.8- 1.2+ 920828 897(10.5- 3.7+) 920926 372 1.1- 0.2- 921030 411 1.2+ 0.7- 920828 402 2.2- 0.8+ 920926 897 0.5+ 0.9+ 921030 411 1.3- 0.3+ 920829 372 0.9- 0.1- 920926 372 0.2+ 0.5+ 921121 411 0.3+ 0.3- 920829 372 0.3- 0.5- 920926 894 (3.4- 2.0-) 921121 411 (2.3- 0.1+) 920829 372 0.5- 0.2- 920926 897 1.3- 1.2+ 921128 691 0.2- 0.2- 920831 557 1.4- 0.4+ Y 920926 894 (4.0+ 1.2-) 921128 691 0.1+ 0.0 920831 557 (2.4- 1.3-)Y 920926 410 0.6- 0.1- 921128 691 0.8+ 0.3- 920831 557 (3.3- 2.1-)Y 920926 410 1.1- 0.1+ 921203 658 1.1+ 0.2- 920831 801 1.8- 0.5+ 920926 410 0.2+ 0.1+ 921203 658 1.2+ 0.1+ 920831 801 1.5- 0.6+ 920927 589 0.4+ 2.1+ 921203 658 1.2+ 0.2- 920831 897 1.4- 1.6+ 920927 589 1.0+ 0.2+ 921204 411 0.0 0.7+ 920831 372 1.8+ 0.7+ 920927 589 1.8+ 1.1- 921204 411 0.6+ 0.8+ 920831 372 (3.7+ 0.2-) 920927 411 1.8+ 2.1- 921221 801 1.1- 0.1+ 920831 372 2.1+ 0.8- 920927 411 0.3+ 0.1+ 921221 801 1.2- 0.2+ 920831 894 0.4- 1.8- 920927 411 0.9- 2.0+ 921225 801 0.5- 0.3- 920831 897 (2.5- 0.4+) 921001 801 1.1- 0.8+ 921225 801 0.9- 0.6+ 920901 657 1.4+ 0.3- 921001 801 0.5- 0.5+ 921231 372 (2.3+ 1.3-) 920901 894 1.9+ 0.0 921002 900 1.7- 0.9- 921231 372 0.1+ 0.3+ 920902 657 (0.0 3.0-) 921002 900 0.0 2.1- 1993/ 920903 894 (2.3+ 1.0-) 921002 410 (2.9- 1.2+) 930121 801 0.8+ 0.8- 920904 372 0.8+ 0.5- 921002 410 0.5- 0.1- 930121 801 0.9+ 0.4- 920904 894 1.6+ 2.2- 921005 372 0.2+ 0.9+ 930124 691 0.6- 0.6- 920904 372 0.4+ 0.1- 921006 894 1.4+ 0.6+ 930124 691 0.4- 0.6- 920905 411 1.0+ 0.1+ 921006 894 0.4- 0.8+ 930124 691 0.5- 0.5- 920905 411 1.1+ 0.5- 921020 691 1.1- 0.5- 930131 658 1.3+ 1.1+ 920905 411 0.1+ 0.2- 921020 691 0.7- 0.7- 930131 658 0.6+ 1.0- 920905 372 0.3+ 0.1+ 921020 691 1.0- 0.6- 930131 658 (0.4- 2.7+) 920906 587 2.1+ 0.1+ 921027 372 1.8+ 2.1- 930330 691 0.8+ 0.6+ 920906 587 (2.6+ 0.5+) 921027 372 (4.9- 2.4-) 930330 691 0.6- 1.0+ 920906 587 0.1+ 0.1- 921029 801 0.7- 0.2+ 930330 691 0.2+ 0.3+ 920925 801 1.3- 0.2+ 921029 801 0.7- 0.1+ 930330 691 1.9- 0.1+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2000 May 12