OAA computing section circular NK 679 86P/Wild 3
The following improved orbital elements, by S. Nakano, are from 71 observations 1980-1997, 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 +/- 0.93 arc second. Epoch = 1994 July 27.0 TT T = 1994 July 21.22764 +/- 0.00097 (m.e.) TT Peri. = 179.27079 +/- 0.00025 Node = 72.62604 +/- 0.00015 (2000.0) Inc. = 15.45312 +/- 0.00006 q = 2.2994642 +/- 0.0000032 AU e = 0.3660818 +/- 0.0000009 a = 3.6273832 +/- 0.0000020 AU n' = 0.14266384 +/- 0.00000012 P = 6.909 +/- 0.0000056 years A1 = +0.290 +/- 0.155 A2 = +0.14630 +/- 0.00294 T = 1980 Oct. 5.18487 TT Epoch = 1980 Oct. 8.0 TT Peri. = 179.35767 e = 0.3681238 Node = 72.72443 (2000.0) a = 3.6201395 AU Inc. = 15.46253 n'= 0.14309225 q = 2.2874801 AU P = 6.888 years T = 1987 Sept. 1.05542 TT Epoch = 1987 Sept. 2.0 TT Peri. = 179.59174 e = 0.3674651 Node = 72.66935 (2000.0) a = 3.6233141 AU Inc. = 15.45597 n'= 0.14290424 q = 2.2918724 AU P = 6.897 years The predicted orbit for the 2001 return is as follows: T = 2001 June 18.60221 TT Epoch = 2001 June 20.0 TT Peri. = 179.16203 e = 0.3644767 Node = 72.61290 (2000.0) a = 3.6352542 AU Inc. = 15.43866 n'= 0.14220075 q = 2.3102886 AU P = 6.931 years The following residuals in seconds of arc are from the above orbital elements: 1980/ 800617 323 0.3+ 0.7- 940213 691 2.1- 0.6+ 800411 026 (0.3+ 2.8+) 800708 323 0.1- 1.1+ 940213 691 0.4- 1.9+ 800411 026 0.6+ 2.2+ 800710 474 1.1- 1.9- 940413 360 0.5+ 0.1+ 800412 026 0.2+ 1.0+ 800710 474 0.7+ 0.7- 940413 360 0.1+ 0.0 800507 026 0.5+ 0.6+ 800807 323 0.0 0.7+ 940501 691 0.6- 0.2- 800507 026 0.6- 0.2+ 800811 323 0.3- 0.9+ 940501 691 0.7- 0.4- 800509 688 (0.1+ 2.9-) 1987/ 940501 691 0.8- 0.5- 800509 372 (3.2- 0.8-) 870129 691 1.7+ 0.3+ 940506 372 (4.2- 1.8+) 800509 372 (3.5- 1.7-) 870129 691 1.6+ 0.4+ 940508 360 1.0+ 0.9- 800510 688 (0.7+ 2.7-) 870201 691 0.5- 1.6- 940508 360 0.3- 0.6- 800511 026 1.6+ 1.9- 870201 691 0.2+ 1.6- 940516 360 0.4- 0.6- 800512 026 0.9+ 0.3- 870201 691 0.0 1.0- 940516 360 0.0 1.1- 800514 801 0.9+ 2.1+ 870228 691 0.1- 0.1+ 940601 360 1.2+ 0.1+ 800517 801 0.8- 1.4- 870228 691 0.3- 0.1- 940601 360 1.4+ 0.6- 800518 372 1.2+ 1.9+ 870228 691 0.5- 0.2- 940615 691 0.4- 0.3+ 800519 323 1.2- 1.4+ 870302 691 0.8- 0.0 940615 691 0.0 0.6- 800520 026 1.7+ 0.7- 870302 691 0.8- 0.2+ 940615 691 0.5- 0.1- 800604 026 1.1- 0.3- 870622 707 0.7- 1.7- 940704 360 0.5+ 0.1+ 800606 801 (2.7+ 2.1-) 870622 707 0.1+ 0.3+ 940704 360 1.8+ 0.3- 800606 381 (0.3- 4.4+) 870721 691 1.5+ 0.4+ 940706 691 0.5- 0.3+ 800609 046 1.8- 2.2- 870722 691 (0.5- 2.6+) 940706 691 0.5- 0.6+ 800609 046 0.6- 0.1+ 870722 691 0.1- 2.0+ 940706 691 0.7- 0.2- 800611 323 0.4- 0.3- 870722 691 0.3- 2.0+ 940710 691 0.4- 0.1- 800611 046 (3.1- 2.3-) 1988/ 940710 691 0.4- 0.1- 800611 046 (2.9- 1.3-) 880911 568 0.0 0.8- 940710 691 1.0- 0.0 800611 026 (0.1- 2.8-) 1994/ 940713 360 0.7+ 0.4- 800612 801 (3.4+ 0.0 ) 940210 691 1.5- 0.4+ 940713 360 1.6+ 0.1- 800612 046 0.1- 0.0 940210 691 (2.5- 0.2+) 940713 360 1.2+ 0.2- 800612 046 (2.5- 4.7+) 940210 691 0.9- 1.0+ 1997/ 800614 046 0.1+ 0.1+ 940210 691 (2.6- 1.0+) 971230 568 0.7+ 0.7- 800614 046 (3.0- 0.2+) 940210 691 1.7- 0.6+ 971230 568 0.5+ 0.9- ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1998 May 1