OAA computing section circular NK 973 P/2003 L1 (Scotti)
The following improved orbital elements, by S. Nakano, are from 69 observations 2002 Apr. 5 to 2003 June 20. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.43 arc second. Epoch = 2003 Mar. 22.0 TT T = 2003 Mar. 7.69271 +/- 0.27528 (m.e.) TT Peri. = 355.19433 +/- 0.02650 Node = 226.03860 +/- 0.00025 (2000.0) Inc. = 9.02419 +/- 0.00006 q = 5.0097109 +/- 0.0001074 AU e = 0.2519997 +/- 0.0000478 a = 6.6974720 +/- 0.0000675 AU n' = 0.05686404 +/- 0.00000086 P = 17.333 +/- 0.0002620 years (+/- 0.10 day) The predicted orbit for the 2020 return is as follows: T = 2020 July 11.47108 TT Epoch = 2020 July 10.0 TT Peri. = 355.00102 e = 0.2527536 Node = 226.05959 (2000.0) a = 6.7133946 AU Inc. = 9.02191 n'= 0.05666186 q = 5.0165603 AU P = 17.395 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2002/ 030605 G90 0.6+ 0.1+ 030607 926 0.3- 0.3- 020405 644 0.4+ 0.3- 030605 291 0.4- 0.1- 030607 620 0.2- 0.4- 020405 644 0.1+ 0.7- 030605 291 0.2+ 0.1- 030608 673 0.3+ 0.4+ 020414 644 0.2+ 0.2+ 030605 291 0.3- 0.1- 030608 673 0.4+ 0.1+ 020414 644 1.2- 0.1- 030606 G90 0.6+ 0.4- 030608 673 0.5+ 0.0 020430 644 0.3+ 0.5- 030606 G90 0.1- 0.1- 030608 291 0.0 0.2+ 020430 644 1.1+ 1.0+ 030606 G90 0.1- 0.5+ 030608 291 0.7- 0.3+ 020430 644 0.8- 0.6+ 030606 291 0.5- 0.0 030608 291 0.3- 0.4+ 2003/ 030606 926 0.3- 0.0 030608 926 1.1+ 0.2- 030429 608 0.5- 0.5+ 030606 926 0.1- 0.1+ 030608 926 0.7- 0.2+ 030429 608 0.2- 0.8- 030606 291 0.2- 0.1+ 030608 926 0.8+ 0.2- 030429 608 0.2+ 0.4- 030606 926 0.2- 0.3- 030608 673 0.6+ 0.1+ 030604 691 0.5- 0.0 030606 291 0.2- 0.1+ 030608 673 0.7+ 0.1- 030604 691 0.6- 0.1- 030606 651 0.7- 0.2+ 030608 673 0.6+ 0.2- 030604 691 0.8- 0.1+ 030606 651 1.1- 0.3- 030608 673 0.3+ 0.1+ 030604 474 0.7- 0.8- 030606 651 0.0 0.1- 030608 673 0.2+ 0.0 030604 474 0.5+ 0.7+ 030607 673 0.5+ 0.0 030608 673 0.3+ 0.1- 030604 474 0.3+ 0.4- 030607 673 0.3+ 0.2+ 030618 620 0.5- 0.1- 030604 474 0.1- 1.2- 030607 291 0.0 0.2+ 030618 620 0.5- 0.1+ 030604 474 0.2+ 0.0 030607 673 0.2+ 0.3+ 030618 620 0.3+ 0.0 030604 474 0.2+ 0.0 030607 926 0.0 0.6- 030620 360 0.3- 0.0 030604 474 0.3+ 0.3+ 030607 291 0.3+ 0.9+ 030620 360 0.0 0.3+ 030605 G90 0.3+ 0.0 030607 291 0.8+ 0.7+ 030620 360 0.1- 0.2+ 030605 G90 0.6- 0.2- 030607 673 0.2+ 0.3+ ( ) -------- Rejected Obs.
Director, Computing Section Late edition Syuichi Nakano 2003 Aug. 10