OAA computing section circular NK 624 49P/Arend-Rigaux
The following improved orbital elements, by S. Nakano, are from 206 observations 1951 to 1993. Perturbations by Mercury to Neptune and five minor planets were taken into account. The mean residual is +/- 1.18 arc seconds. Epoch = 1991 Sept.21.0 TT T = 1991 Oct. 2.71858 +/- 0.00009 (m.e.) TT Peri. = 329.07597 +/- 0.00006 Node = 122.13408 +/- 0.00005 (2000.0) Inc. = 17.88388 +/- 0.00002 q = 1.4378248 +/- 0.0000004 AU e = 0.6000511 +/- 0.0000001 a = 3.5950213 +/- 0.0000004 AU n' = 0.14459453 +/- 0.00000003 P = 6.816 +/- 0.0000012 years T = 1950 Dec. 18.92145 TT Epoch = 1950 Dec. 25.0 TT Peri. = 326.28686 e = 0.6102657 Node = 125.39639 (2000.0) a = 3.5573980 AU Inc. = 17.18373 n'= 0.14689445 q = 1.3864401 AU P = 6.710 years T = 1957 Sept. 6.58487 TT Epoch = 1957 Aug. 30.0 TT Peri. = 326.41529 e = 0.6104270 Node = 125.30431 (2000.0) a = 3.5572634 AU Inc. = 17.19592 n'= 0.14690279 q = 1.3858136 AU P = 6.709 years T = 1964 June 5.64942 TT Epoch = 1964 June 14.0 TT Peri. = 328.88923 e = 0.6002627 Node = 122.26897 (2000.0) a = 3.5952066 AU Inc. = 17.84310 n'= 0.14458335 q = 1.4371382 AU P = 6.817 years T = 1971 Apr. 6.01594 TT Epoch = 1971 Mar. 30.0 TT Peri. = 328.95302 e = 0.5990947 Node = 122.23749 (2000.0) a = 3.6027815 AU Inc. = 17.82945 n'= 0.14412761 q = 1.4443742 AU P = 6.838 years T = 1978 Feb. 2.48182 TT Epoch = 1978 Feb. 21.0 TT Peri. = 329.00298 e = 0.5995736 Node = 122.20572 (2000.0) a = 3.6003290 AU Inc. = 17.85177 n'= 0.14427490 q = 1.4416669 AU P = 6.831 years T = 1984 Dec. 1.41158 TT Epoch = 1984 Dec. 6.0 TT Peri. = 328.92196 e = 0.5987436 Node = 122.23419 (2000.0) a = 3.6041439 AU Inc. = 17.84035 n'= 0.14404590 q = 1.4461857 AU P = 6.842 years The predicted orbit for the 1998 return is as follows: T = 1998 July 12.59853 TT Epoch = 1998 July 6.0 TT Peri. = 330.56167 e = 0.6115430 Node = 121.72924 (2000.0) a = 3.5231300 AU Inc. = 18.29060 n'= 0.14904282 q = 1.3685846 AU P = 6.613 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 510108 711 1.0+ 1.5- 770822 821 0.7- 1.2+ 850115 657 1.3- 0.2+ 510108 711 0.2- 1.8- 771007 801 0.9- 1.0- 850118 691 0.6+ 0.4+ 510204 711 (0.2+ 3.4+) 771014 485 0.7+ 2.0- 850118 691 1.0+ 1.8- 510204 711 0.0 1.2- 771014 485 1.0+ 1.1- 850118 691 1.0+ 0.9- 510204 711 (0.9+ 3.2+) 771104 323 1.1- 0.2+ 850120 691 0.3+ 1.9- 510204 711 (0.1+ 3.2+) 771111 805 0.1- 0.9+ 850120 691 0.6+ 2.7- 510205 012 (4.9- 2.9-) 771111 882 (1.9+ 4.8+) 850120 691 0.9+ 1.8- 510206 012 (3.2- 0.6-) 771111 882 1.7+ 2.2+ 850120 801 0.3- 0.1- 510206 012 (4.1- 2.3-) 771115 805 0.3- 0.9+ 850120 056 0.2- 1.4- 510207 012 2.1- 1.0+ 771117 413 (4.4- 4.1+) 850121 688 0.0 0.8- 510208 672 0.1- 0.0 771117 413 (2.0- 3.0+) 850121 688 0.5- 1.6+ 510208 056 (1.8- 2.9-) 771118 323 (3.6- 1.1+) 850121 056 0.5- 0.4+ 510208 008 0.2- 0.0 771130 885 (3.1+ 3.8+) 850121 056 0.1- 1.9+ 510210 008 1.0+ 0.8+ 771201 882 (1.0- 4.7+) 850129 056 1.7- 0.9- 510211 711 0.7+ 0.2- 771202 879 0.1- 0.3- 850129 056 0.3- 0.3+ 510211 012 1.7- 0.2+ 771202 879 0.7+ 0.4- 850214 657 2.0- 0.0 510211 008 0.5+ 0.5- 771204 809 0.2- 1.1- 850214 657 (0.9- 3.5-) 510212 711 0.9+ 0.7- 771204 323 1.6- 0.5- 850215 691 2.0- 1.7- 510212 008 1.2+ 0.1- 771205 809 0.1- 2.0- 850215 381 0.2- 0.5- 510213 012 0.8+ 1.4- 771210 879 0.7- 0.3+ 850216 801 (4.4- 0.9-) 510213 711 0.4+ 2.2- 771210 879 1.9- 2.2+ 850221 801 0.8- 1.6+ 510213 008 0.1+ 0.5- 771229 805 (2.9- 3.6-) 850225 688 (8.7+ 18.1-) 510216 008 0.7+ 0.5- 780103 323 (3.1- 0.5-) 850225 688 (0.2+ 2.8-) 510223 008 0.9+ 0.7- 780108 885 2.1- 1.8+ 850225 056 2.2- 2.7- 510226 012 (1.0+ 4.4+) 780108 885 (3.3- 0.4+) 850226 056 (3.4- 4.7-) 510227 012 (4.1+ 1.7+) 780109 805 1.4- 2.2+ 850319 801 0.0 1.3+ 510228 754 0.5- 1.2+ 780110 805 (3.9- 2.5-) 850324 688 0.7- 2.7- 510228 012 2.4- 0.8+ 780113 801 2.6- 0.4- 850324 688 0.7- 2.2- 510303 012 2.1+ 2.3+ 780128 323 2.3- 0.6- 850325 801 0.6- 1.2+ 510304 012 0.7- 0.3+ 780211 801 2.1- 0.8- 850421 801 0.6- 0.0 510305 012 0.5+ 1.0+ 780302 323 (3.1+ 0.0 ) 860306 695 0.7+ 0.8+ 510305 012 2.2+ 2.2+ 780305 381 1.9- 0.1- 860306 695 0.7+ 1.2+ 510306 012 0.9- 1.9+ 780312 885 (5.0- 1.2-) 880517 568 (3.5+ 0.7-) 510312 008 0.9- 2.2+ 840807 675 1.3+ 0.2+ 880517 568 (3.0+ 0.1+) 510312 008 1.1+ 0.1+ 840808 675 0.2+ 0.0 890406 807 0.2+ 1.0+ 510327 754 (1.2+ 3.6-) 840808 372 (3.2- 0.3-) 890602 568 0.4+ 0.0 510403 754 (4.1+ 0.1-) 840809 707 2.7- 1.9- 890602 568 0.7+ 1.4+ 510403 754 (0.9+ 3.3+) 840825 801 (3.2+ 0.2+) 890602 568 0.1+ 0.5+ 510405 012 (3.8+ 3.3-) 840926 809 2.7+ 1.2- 890602 568 0.6+ 1.7+ 510406 662 1.4- 1.3+ 840927 809 0.1- 0.7+ 890801 568 0.5+ 1.1+ 510406 662 1.4- 1.2+ 840927 809 0.6+ 1.0+ 890801 568 1.1+ 0.8+ 580129 689 1.2+ 1.3+ 840928 809 0.6- 0.5- 890801 568 1.1+ 0.5+ 580131 689 0.5+ 0.6+ 840928 809 0.5- 0.4- 890801 568 0.4- 1.2+ 580131 689 0.3+ 0.7+ 840929 809 1.0+ 0.8- 890801 568 0.4+ 1.0+ 580212 689 1.4+ 0.1+ 840929 809 1.7+ 0.8- 890801 568 0.3+ 0.6+ 580212 689 0.8+ 0.8+ 840930 809 0.6- 0.4- 890801 568 0.2+ 0.2+ 580216 689 1.9+ 2.4+ 841023 114 (4.6- 0.5+) 890801 568 0.1- 1.2+ 580216 689 1.9+ 1.7+ 841023 114 0.9+ 0.1+ 890801 568 0.4+ 1.1+ 580410 689 0.3+ 1.0+ 841024 114 0.9+ 2.0+ 890801 568 0.2+ 1.2+ 580410 689 0.2- 1.3+ 841025 491 0.4- 0.7+ 890801 568 0.7+ 0.3+ 580512 689 0.3- 2.5+ 841025 801 1.8+ 0.5+ 890803 568 0.4+ 0.8+ 580512 689 0.4- 2.7+ 841025 114 1.6+ 0.7+ 890803 568 0.6+ 0.4+ 580607 689 0.6- 2.5+ 841026 688 (4.3- 0.7-) 890803 568 0.4+ 0.2+ 580607 689 (0.8- 2.9+) 841026 688 0.3- 0.7- 890803 568 0.2- 0.4+ 630824 689 1.6+ 2.0+ 841030 491 0.5+ 2.0+ 890803 568 0.7+ 1.0+ 630824 689 0.5+ 1.6+ 841114 323 0.8- 1.0+ 890803 568 0.5+ 0.8+ 630912 689 2.0+ 1.2- 841120 801 2.2+ 0.6+ 900429 807 (1.1+ 4.0-) 630912 689 1.5+ 1.3- 841120 688 0.8- 1.2+ 900429 807 (0.4+ 4.8-) 630921 689 1.0+ 1.6+ 841120 688 1.1- 1.9+ 900918 675 2.5+ 0.3+ 630923 689 1.2+ 0.6- 841122 056 (2.4- 2.8+) 900918 675 2.3+ 0.2- 630925 689 0.7+ 0.4+ 841122 056 (0.4- 4.3+) 910801 372 (3.0+ 2.6+) 630925 689 0.6+ 0.6+ 841123 114 (0.4+ 4.1+) 910801 372 0.3+ 1.8+ 631018 689 0.8+ 0.4+ 841123 293 (1.4- 3.7+) 910802 372 2.4+ 2.5+ 631018 689 0.8- 0.5+ 841126 801 0.5+ 0.5+ 910905 657 2.5+ 0.9+ 631217 689 (3.2+ 0.5+) 841127 114 (2.2+ 7.8+) 910905 657 (3.3+ 1.2+) 631218 689 1.3+ 1.2- 841127 491 0.3- 2.7+ 910912 691 1.1+ 1.6+ 700727 691 1.3- 0.2+ 841127 474 0.1- 0.4+ 910912 691 0.8+ 1.6+ 700727 691 1.4- 0.7+ 841127 474 0.2+ 0.1+ 910912 691 1.5- 1.8+ 700801 821 1.5- 1.1+ 841127 323 0.6- 0.8+ 910915 691 1.4+ 0.9+ 700801 821 1.6- 0.3+ 841128 491 1.3- 1.2+ 910915 691 1.1+ 1.0+ 700805 821 0.4+ 1.2- 841130 114 0.9+ 1.5+ 910915 691 1.4+ 0.7+ 700805 821 0.7+ 0.2- 841201 114 0.5+ 0.8+ 920313 658 1.8+ 0.2- 700807 821 1.8+ 0.6- 841201 114 2.4+ 2.7+ 920313 658 1.7+ 0.3- 700807 821 2.4+ 0.0 841205 657 1.5- 0.8- 930529 691 0.6- 0.2- 700926 691 1.1- 0.1- 841217 323 0.8+ 0.6+ 930529 691 0.3- 0.0 700926 691 0.9- 0.2+ 841218 801 0.7+ 0.8+ 930529 691 0.5- 0.3- 770815 801 1.4- 0.2+ 841220 114 0.0 1.1+ 930529 691 0.1+ 0.2- 770818 801 0.7- 0.7+ 841222 114 (1.4- 10.0+) 930529 691 0.2- 0.3- 770819 821 2.0- 0.6+ 841223 801 1.4+ 0.4+ 930627 691 0.3- 0.1+ 770819 821 0.9- 0.5- 841223 293 0.1- 2.1+ 930627 691 1.1- 0.3- 770820 821 1.2- 0.2- 841223 114 1.1- 1.5+ 930627 691 0.8- 0.3- 770820 821 2.0- 1.0+ 841224 114 1.6- 2.0+ 930722 691 1.1- 0.7- 770821 821 0.8- 0.5- 841225 114 1.8- 2.3+ 930722 691 0.2- 0.8- 770821 821 1.6- 0.6- 841227 114 0.6+ 1.1- 930722 691 1.2+ 0.3+ 770822 821 0.1- 0.4+ 850114 323 0.0 0.9- ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1996 May 4