OAA computing section circular NK 1507 C/1998 K1 (Mueller)

The following improved orbital elements, by S. Nakano, are from 166 observations 1998 Apr. 4 to Dec. 27. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.56 arc second. See an orbit on MPC 33451. Epoch = 1998 Aug. 15.0 TT T = 1998 Sept. 1.01571 +/- 0.00268 (m.e.) TT Peri. = 165.24563 +/- 0.00055 Node = 18.25563 +/- 0.00009 (2000.0) Inc. = 35.63667 +/- 0.00010 q = 3.4166567 +/- 0.0000149 AU e = 0.9451852 +/- 0.0000403 1/a = +0.0160434 +/- 0.0000118 1/AU a = 62.3309 AU P = 492.1 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1998/ 980520 402 0.6- 0.1- 980526 402 0.5- 0.1+ 980404 G91 0.4- 0.3+ 980520 402 0.5- 0.1+ 980526 402 0.2- 0.1+ 980404 696 0.1- 0.2+ 980520 372 0.0 0.4- 980526 900 1.0+ 0.4+ 980404 G91 0.2- 0.2+ 980520 355 0.9+ 0.4+ 980526 900 0.1+ 0.1+ 980422 699 0.1+ 0.5+ 980520 372 0.3+ 0.1+ 980527 402 0.1+ 0.1+ 980422 699 1.0+ 0.3- 980520 355 0.2+ 0.4+ 980527 402 0.1+ 0.3+ 980422 699 1.1+ 0.2- 980520 900 0.9+ 0.0 980527 402 0.3- 0.1- 980423 699 0.6+ 0.0 980520 900 0.3+ 1.1- 980527 360 0.1- 0.0 980423 699 0.1- 0.1- 980520 046 0.5+ 0.2+ 980527 360 0.3- 0.1+ 980423 699 0.7+ 0.0 980520 046 0.7- 0.1+ 980527 372 0.4+ 0.3+ 980510 G91 1.1- 0.1+ 980520 046 0.5- 0.3- 980527 046 0.3- 0.3+ 980510 696 1.1- 0.1+ 980520 046 0.7- 0.2- 980527 046 0.4- 0.3+ 980516 675 1.4- 0.4- 980521 402 0.3- 0.1- 980527 046 0.4- 0.1+ 980517 675 0.7- 0.9- 980521 402 0.3- 0.1- 980527 118 0.4+ 0.7+ 980517 046 0.5+ 0.0 980521 402 0.5- 0.1- 980527 118 0.2+ 0.8+ 980517 046 0.0 0.0 980521 372 0.1+ 0.5+ 980528 860 (0.7+ 3.6-) 980517 046 0.5- 0.9+ 980521 372 0.3+ 0.6+ 980528 860 (3.1+ 2.0-) 980517 046 0.2+ 0.3+ 980521 360 0.6- 0.1- 980528 860 (2.9+ 0.4-) 980517 046 0.2+ 0.6+ 980521 360 0.4- 0.2- 980530 755 1.0- 0.7+ 980518 696 0.7- 0.2- 980521 360 0.3- 0.1- 980530 755 0.4- 0.5- 980518 675 (2.0- 1.8+) 980521 143 1.2+ 0.3+ 980531 670 0.3+ 0.5+ 980518 696 0.8- 0.5- 980521 143 1.5+ 1.3+ 980531 670 0.1+ 0.2- 980518 696 0.9- 0.0 980521 143 1.4+ 0.1+ 980531 897 0.2- 0.8+ 980518 504 0.6- 0.7+ 980522 402 0.3- 0.0 980531 897 0.5- 0.3- 980518 504 0.0 1.8+ 980522 402 0.4- 0.2- 980531 860 (1.0+ 2.1+) 980518 504 0.5+ 1.0+ 980522 402 0.4- 0.1+ 980531 860 0.9- 1.2+ 980519 816 0.4- 0.2- 980522 143 0.3+ 0.8+ 980531 860 0.2+ 0.7+ 980519 816 0.1- 0.4- 980522 143 0.2+ 0.3+ 980604 750 (2.1+ 0.7+) 980519 816 0.1- 0.3- 980522 143 0.7- 0.7+ 980604 750 1.7+ 1.1+ 980519 670 0.5+ 0.1+ 980522 046 0.7- 0.0 980604 750 1.0+ 0.2+ 980519 670 0.2+ 1.3- 980522 046 0.6- 0.3- 980606 046 0.9+ 0.1- 980519 670 0.3- 0.5+ 980522 046 0.5- 0.2- 980606 046 0.9+ 0.3- 980519 402 0.0 0.8- 980522 046 0.7- 0.1- 980606 046 0.6+ 0.0 980519 402 0.4- 0.5- 980523 670 1.1- 0.3- 980608 750 0.6+ 0.8- 980519 402 0.5- 0.4- 980523 670 (2.0- 0.1+) 980608 750 0.9+ 0.6+ 980519 360 0.3- 0.5- 980523 670 0.4+ 0.6- 980609 046 0.3- 0.2+ 980519 360 0.5- 0.6- 980523 355 0.2- 0.4+ 980609 046 0.7+ 0.1+ 980519 360 0.4- 0.7- 980523 355 0.0 0.1- 980609 046 0.4+ 0.1+ 980519 900 0.7+ 0.1- 980523 355 0.9- 0.4- 980615 670 1.2+ 1.0- 980519 900 0.5+ 0.1+ 980523 504 0.0 0.9- 980615 670 0.7- 0.2- 980519 557 0.2- 0.7- 980523 504 0.3+ 1.2- 980615 670 1.3+ 0.8- 980519 557 0.1- 0.4- 980523 504 0.4+ 1.5- 980617 360 0.0 0.2+ 980519 557 0.3- 0.5- 980523 965 0.6- 0.4- 980617 360 0.2- 0.2+ 980519 504 0.3+ 0.3- 980523 965 0.3- 0.7+ 980620 402 0.3- 0.1+ 980519 504 0.8+ 0.2- 980523 965 0.7+ 0.8- 980620 402 0.4+ 0.3+ 980519 504 1.1+ 1.0+ 980523 965 0.5- 0.2- 980620 402 0.3- 0.2- 980519 504 0.5+ 0.2+ 980524 755 0.4+ 0.4+ 980624 104 1.2- 0.1- 980519 046 0.3- 0.1- 980524 755 0.0 0.1+ 980624 104 0.6- 0.1+ 980519 046 0.0 0.1+ 980524 755 0.5+ 0.1+ 981218 402 0.1- 1.3+ 980519 046 0.1+ 0.4- 980525 700 0.5- 0.1+ 981218 402 1.3- 1.1+ 980520 696 0.6- 0.1- 980525 700 0.5- 0.2- 981218 402 0.6- 0.4- 980520 696 0.5- 0.5- 980526 700 0.1+ 0.2+ 981218 402 0.9- 0.1- 980520 696 0.5- 0.2- 980526 700 0.3+ 0.3+ 981224 360 0.0 0.1- 980520 897 0.2+ 0.4- 980526 867 0.3+ 0.0 981224 360 0.4+ 0.0 980520 897 0.7+ 0.2- 980526 867 0.3+ 0.1+ 981227 402 1.7+ 0.6- 980520 897 0.7+ 0.8- 980526 867 0.5+ 0.2- 981227 402 1.1+ 0.3+ 980520 897 0.3+ 0.2+ 980526 402 0.2+ 0.2+ 981227 402 0.4- 0.7- 980520 402 0.2+ 0.1- 980526 867 0.2+ 0.0 981227 402 0.2- 0.7- ( ) -------- Rejected Obs.

Director, Computing Section Syuichi Nakano 2007 July 13

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