OAA computing section circular NK 836 C/1956 R1 (Arend-Roland)

The following improved orbital elements, by S. Nakano, are from 140 observations 1956 Nov. 20 to 1958 Apr. 11 including planetary perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, and non-gravitational effects were taken into account. The mean residual is +/- 1.06 arc seconds. Epoch = 1957 Mar. 23.0 TT T = 1957 Apr. 8.03257 +/- 0.00017 (m.e.) TT Peri. = 308.77979 +/- 0.00028 Node = 215.85552 +/- 0.00007 (2000.0) Inc. = 119.94432 +/- 0.00005 q = 0.3160381 +/- 0.0000024 AU e = 1.0001795 +/- 0.0000030 1/a = -0.0005681 +/- 0.0000096 1/AU origin = -0.000016 (Q= 6) future = -0.000614 A1 = +1.445 +/- 0.138 A2 = +0.12226 +/- 0.01969 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1956/ 570122 012 0.0 0.3- 570526 012 0.5- 0.3- 561108 012 (5.6+ 2.4+) 570123 012 2.3- 0.8+ 570526 012 1.0- 0.8- 561120 056 (3.1+ 0.8-) 570123 012 0.8- 1.0- 570528 780 0.3+ 1.3+ 561120 056 (3.2+ 3.4+) 570123 012 0.9- 0.1- 570528 012 0.0 0.1+ 561120 012 0.1+ 1.1- 570125 012 0.6+ 0.7+ 570528 012 1.3+ 1.2+ 561120 012 0.9- 0.5+ 570131 754 0.4+ 1.0- 570529 780 0.2+ 0.9+ 561121 056 2.7+ 0.2+ 570213 754 1.1- 0.7- 570530 780 0.1- 2.3+ 561121 012 1.3+ 0.6+ 570222 675 0.2- 0.5- 570530 012 1.2- 1.4- 561121 056 1.2+ 0.6- 570224 675 1.0+ 1.7+ 570530 012 0.5- 0.1+ 561122 056 1.3+ 0.7- 570429 012 (4.0+ 2.1+) 570530 012 0.4- 0.2- 561122 056 2.0+ 0.0 570429 012 1.5+ 0.9+ 570530 012 0.6- 0.3+ 561122 012 1.9- 0.9+ 570430 012 0.4- 0.4+ 570531 780 (3.0- 2.1+) 561122 012 (4.4+ 0.5+) 570430 012 0.4+ 0.5- 570531 012 0.2+ 1.3- 561124 056 0.6+ 0.1- 570430 012 2.1+ 0.3- 570531 012 0.8+ 0.9+ 561124 056 0.6- 0.6- 570430 012 0.3- 1.4- 570531 012 0.6- 0.3- 561127 012 1.1+ 1.2+ 570501 689 0.2+ 1.8- 570531 012 1.7- 0.5- 561127 012 0.9+ 1.6- 570501 689 0.0 1.4- 570601 012 1.6+ 0.4+ 561128 012 1.5+ 1.7+ 570501 012 2.4+ 2.6+ 570601 012 0.4- 0.7+ 561130 662 0.3+ 0.0 570501 012 0.6+ 0.2+ 570602 780 0.6- 0.8+ 561130 662 0.4+ 0.4+ 570501 012 1.3+ 1.2- 570602 754 (2.4+ 3.9+) 561130 012 (3.4+ 3.2+) 570501 012 (1.2- 3.1+) 570603 754 1.1+ 0.2+ 561209 056 2.1- 0.2+ 570503 689 0.7+ 1.0+ 570613 012 0.8+ 2.2- 561209 056 1.4- 0.0 570503 689 0.5+ 0.6+ 570617 754 0.4+ 1.3+ 561214 662 0.3+ 0.8- 570503 012 0.1- 0.2- 570617 754 1.2+ 1.4+ 561214 662 0.5+ 0.8- 570503 012 1.5- 0.5- 570620 689 1.1- 0.9+ 561214 662 0.2- 0.4- 570503 012 1.4- 1.1- 570620 689 1.0- 0.9+ 561214 662 0.0 0.4- 570503 012 1.2+ 1.9+ 570622 754 0.3+ 1.0+ 561216 056 2.3+ 0.6+ 570504 689 0.7+ 0.3+ 570628 662 1.1- 0.4+ 561216 056 (2.9+ 0.2+) 570504 689 (3.1+ 3.6+) 570628 662 0.3- 0.6+ 561216 056 1.2- 1.1- 570504 012 1.5- 0.6- 570629 754 2.1+ 0.5+ 561217 056 0.6- 1.2- 570504 012 0.1+ 1.3- 570702 689 0.8+ 0.6+ 561219 056 0.4+ 1.4- 570504 012 0.9- 0.2- 570702 689 0.5+ 0.4+ 561219 056 (4.6+ 1.7+) 570504 012 0.0 0.1- 570716 754 2.5+ 1.9+ 561219 056 0.6+ 0.9+ 570506 012 (3.9+ 1.6+) 570719 754 0.1+ 1.6+ 561220 056 0.2+ 1.0+ 570506 012 2.4+ 0.3+ 570724 754 1.4+ 0.7+ 561220 056 0.4+ 0.6- 570506 012 1.5+ 0.2+ 570822 711 1.0+ 0.4+ 561227 754 0.7+ 0.4+ 570506 012 (4.4+ 1.2+) 570823 711 0.9+ 1.0+ 1957/ 570506 012 0.2+ 1.1- 570825 711 1.6+ 0.8- 570101 754 0.2+ 0.7- 570506 012 0.4+ 0.6- 570919 689 1.9+ 1.1- 570103 012 1.6- 1.8+ 570506 012 0.0 0.9- 570919 689 2.1+ 1.0- 570103 012 0.7- 0.8+ 570506 012 0.3+ 0.9+ 571130 689 0.0 0.8- 570105 754 0.0 0.5- 570508 012 0.7- 1.9- 571130 689 1.0+ 0.3- 570117 754 0.0 1.6+ 570508 012 1.6+ 2.6- 571203 662 2.3+ 1.6- 570117 056 (0.4- 3.0+) 570513 012 1.1- 0.1- 571203 662 (3.1+ 1.8-) 570117 056 (0.4- 5.0+) 570513 012 0.4- 0.1- 1958/ 570117 012 1.2- 0.5+ 570513 012 (3.0+ 0.6-) 580120 689 0.3+ 2.0+ 570118 056 0.8- 1.4+ 570516 012 1.9- 0.4+ 580120 689 0.1+ 1.7+ 570118 056 0.8- 0.9+ 570519 012 1.6+ 0.5+ 580121 711 0.8- 1.9+ 570119 056 0.4+ 0.0 570519 012 0.4+ 0.2+ 580122 711 0.4+ 0.6+ 570119 056 0.1+ 0.4+ 570522 662 0.1+ 0.6- 580125 711 1.4- 1.6+ 570120 012 0.9- 0.5- 570522 662 0.2- 1.1- 580310 689 0.8- 1.4- 570120 012 1.5- 0.9- 570525 012 2.7- 0.1+ 580411 689 1.6+ 1.0- 570122 012 0.3+ 0.8- 570525 012 0.6+ 0.5- 580411 689 1.8+ 0.2+ 570122 012 0.0 0.5- 570526 780 0.3- 0.2- ( ) -------- Rejected Obs.

Director, Computing Section Late edition Syuichi Nakano 2002 Feb. 16

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