OAA computing section circular NK 703 C/1998 J1 (SOHO)

The following improved orbital elements, by S. Nakano, are from 196 observations 1998 May 20 to Aug 5. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.70 arc second. Epoch = 1998 May 27.0 TT T = 1998 May 8.61891 +/- 0.00016 (m.e.) TT Peri. = 110.55824 +/- 0.00134 Node = 351.64718 +/- 0.00176 (2000.0) Inc. = 62.93174 +/- 0.00015 q = 0.1532151 +/- 0.0000005 AU e = 1.0001785 +/- 0.0000133 1/a = -0.0011652 +/- 0.0000866 1/AU origin = -0.000446 (Q= 5) future = -0.001015 The following residuals in seconds of arc are from the above orbital elements: 1998/ 980525 422 0.2+ 0.3+ 980604 860 (2.9+ 3.6-) 980520 422 1.0+ 0.2- 980525 426 0.4+ 0.5+ 980604 834 1.2+ 0.1- 980520 422 0.4+ 0.0 980525 426 0.7+ 0.4+ 980604 860 (4.5+ 3.3-) 980520 422 0.3+ 0.3- 980525 426 0.5+ 0.5+ 980604 834 1.6+ 0.1- 980520 422 1.2- 1.5+ 980525 426 1.0+ 0.4+ 980606 426 0.4+ 0.1+ 980520 422 0.6+ 0.3- 980526 415 1.7- 0.1- 980606 426 0.4+ 0.1+ 980520 422 1.5+ 0.1- 980526 422 0.0 0.4+ 980606 426 0.2+ 0.0 980520 422 (2.2+ 0.0 ) 980526 422 0.5+ 0.5+ 980606 426 0.0 0.1+ 980520 422 (3.6+ 1.9-) 980526 422 0.6+ 0.2+ 980607 860 0.9+ 1.5- 980520 422 (5.8+ 3.7-) 980526 422 0.4+ 0.4+ 980607 860 (2.3+ 1.8-) 980520 426 0.9+ 0.5- 980526 422 0.0 0.6+ 980607 860 (2.7+ 2.4-) 980520 426 0.3+ 0.8+ 980526 426 0.1- 0.6+ 980610 428 0.6+ 0.6+ 980520 426 0.2- 0.6- 980526 426 0.1- 0.5+ 980610 428 0.7+ 0.6+ 980520 426 0.3+ 0.2+ 980526 426 0.0 0.2+ 980611 834 0.1- 0.6+ 980520 426 0.4+ 0.2+ 980526 426 0.1+ 0.5+ 980614 422 1.0- 1.7+ 980520 426 0.2+ 0.0 980528 426 0.4- 0.2- 980614 422 0.9- 1.5+ 980520 426 1.0+ 0.7- 980528 422 0.6- 0.1- 980614 426 0.8+ 0.1- 980520 426 (2.4+ 1.2-) 980528 422 0.3- 0.5- 980614 426 0.9+ 0.5- 980520 426 1.8+ 0.8- 980528 422 0.5- 0.4- 980614 426 0.9+ 0.0 980520 426 1.7+ 0.4- 980528 422 0.7- 0.1- 980614 860 (2.3+ 1.2-) 980521 422 0.6+ 0.4+ 980528 426 0.3- 0.4- 980614 860 1.8+ 1.5- 980521 422 0.6+ 0.0 980528 426 0.0 0.5- 980614 860 (3.1+ 0.4-) 980521 422 0.2+ 0.1+ 980528 426 0.3- 0.2- 980617 422 0.6+ 0.5+ 980521 422 1.0+ 0.0 980528 860 1.4+ 1.7- 980617 422 0.6+ 0.3+ 980521 422 1.0+ 0.1+ 980528 860 (2.8+ 1.9-) 980617 422 0.7+ 0.3+ 980521 422 0.4+ 0.0 980528 860 (2.0+ 2.6-) 980618 422 0.9+ 0.0 980521 422 0.2+ 0.4+ 980528 860 (2.9+ 1.4-) 980618 422 0.8+ 0.2- 980521 422 0.8+ 0.1- 980528 834 1.7- 1.2+ 980618 422 0.8+ 0.3- 980521 422 0.6+ 0.0 980528 860 (2.9+ 2.3-) 980619 844 0.5+ 0.2+ 980521 426 0.0 0.0 980528 860 (3.4+ 3.1-) 980619 844 0.1+ 0.4+ 980521 422 1.1- 1.6+ 980528 834 (0.5- 2.0+) 980620 844 0.3- 0.0 980521 426 0.1+ 0.1+ 980529 428 0.9- 0.4+ 980621 844 0.7+ 0.5- 980521 426 0.6+ 0.3- 980529 428 1.0- 0.5+ 980621 844 0.0 0.5- 980521 426 0.5+ 0.7- 980529 422 1.3- 0.1- 980621 844 0.1+ 1.3- 980521 426 0.6- 0.1+ 980529 422 1.1- 0.1- 980624 834 1.2- 0.9+ 980522 422 0.0 0.0 980529 422 0.4- 0.1+ 980624 834 0.1+ 0.5+ 980522 422 0.4- 0.2+ 980529 422 1.2- 0.4- 980624 834 0.8- 0.7+ 980522 422 0.0 0.0 980530 422 0.7- 0.5+ 980624 844 0.3+ 1.4- 980522 422 0.0 0.0 980530 422 0.3- 0.4+ 980624 844 0.5+ 1.5- 980522 422 0.1+ 0.2+ 980530 422 0.5- 0.6+ 980624 834 0.1- 0.8+ 980522 422 0.4- 0.3+ 980530 422 0.4- 0.5+ 980624 844 0.6+ 1.2- 980522 422 0.0 0.1+ 980530 422 0.4- 0.4+ 980625 426 0.3- 0.3- 980522 422 0.2+ 0.3- 980530 422 0.3- 0.4+ 980625 426 0.4- 0.4- 980523 422 1.1- 0.5- 980531 428 0.7- 0.0 980625 426 0.5- 0.2- 980523 422 1.0- 0.5- 980531 428 0.4- 0.2- 980702 422 0.4- 0.2- 980523 422 0.7- 0.5- 980531 422 0.8- 0.1+ 980702 422 0.2- 0.3- 980523 422 0.9- 0.3- 980531 422 0.6- 0.3+ 980702 422 0.2- 0.0 980523 422 1.1- 0.3- 980531 422 0.8- 0.3+ 980702 422 0.1- 0.0 980523 422 0.9- 0.3- 980531 422 0.5- 0.2+ 980702 860 1.6+ 0.4+ 980523 422 1.0- 0.3- 980531 422 0.8- 0.3+ 980702 860 1.3+ 0.2+ 980523 426 1.0- 0.5- 980531 426 0.9- 0.3+ 980704 860 0.6+ 0.8- 980523 426 0.7- 0.5- 980531 426 0.8- 0.1+ 980704 860 1.8+ 1.5- 980523 426 0.8- 0.9- 980531 426 0.8- 0.5+ 980707 834 1.0- 0.2+ 980523 426 0.7- 0.7- 980531 860 (2.1+ 0.6+) 980708 834 0.8- 0.1+ 980523 426 0.3- 0.4- 980531 860 1.9+ 0.3- 980709 834 1.5- 0.5+ 980523 426 1.2- 0.1- 980531 860 0.8+ 1.2- 980710 426 1.2- 0.8+ 980523 426 1.0- 0.4- 980601 422 0.5- 0.2+ 980710 426 1.4- 1.0+ 980524 422 0.5- 0.2+ 980601 422 0.4- 0.0 980710 426 1.2- 1.0+ 980524 422 0.2- 0.1+ 980601 422 0.5- 0.1- 980710 834 0.9- 1.5+ 980524 422 0.2+ 0.3- 980601 422 0.2- 0.0 980712 844 0.1+ 0.3+ 980524 422 0.2- 0.3+ 980601 422 0.4- 0.2- 980712 844 1.4- 0.7+ 980524 422 0.2- 0.3+ 980601 834 0.5+ 0.5- 980713 834 0.2+ 0.5+ 980524 422 0.1- 0.2+ 980601 834 0.7+ 0.4+ 980719 422 0.4- 0.2+ 980524 426 0.3- 0.4- 980602 834 1.0+ 0.1- 980719 422 0.2- 0.4+ 980524 422 0.4- 0.1+ 980602 834 1.9- 1.0- 980719 422 0.2- 0.2+ 980524 426 0.3- 0.0 980603 834 (0.6+ 4.4+) 980719 422 0.2- 0.0 980524 426 0.3- 0.1+ 980604 428 (2.1+ 0.2+) 980719 834 0.1- 0.8- 980524 426 0.7- 0.4+ 980604 428 1.7+ 0.3+ 980729 844 (3.5+ 1.6-) 980524 426 0.6- 0.1+ 980604 422 (2.0+ 0.2-) 980729 844 (0.5+ 2.4-) 980525 415 0.5- 1.4- 980604 422 1.9+ 0.1- 980729 844 0.4- 0.8- 980525 422 0.9+ 0.3+ 980604 428 1.9+ 0.1- 980805 426 0.7+ 0.9- 980525 422 0.8+ 0.4+ 980604 422 1.9+ 0.1- 980805 426 1.0+ 0.8- 980525 422 1.0+ 0.1+ 980604 860 (3.2+ 1.7-) 980805 426 0.3+ 0.9- 980525 422 0.4+ 0.3+ 980604 860 (2.4+ 2.7-) ( ) -------- Rejected Obs.

Director, Computing Section Computed date Syuichi Nakano 1998 Sept. 8

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