OAA computing section circular NK 1657 C/1996 P2 (Russell-Watson)

The following improved orbital elements, by S. Nakano, are from 137 observations 1995 May 2 to 1998 Feb. 2. 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. See an orbit on MPC 30632. Epoch = 1996 Mar. 18.0 TT T = 1996 Mar. 1.34859 +/- 0.00108 (m.e.) TT Peri. = 188.80200 +/- 0.00014 Node = 101.40394 +/- 0.00014 (2000.0) Inc. = 29.08327 +/- 0.00002 q = 2.0057819 +/- 0.0000031 AU e = 1.0003630 +/- 0.0000064 1/a = -0.0001810 +/- 0.0000032 1/AU origin = +0.001054 (Q= 8) future = +0.000950 Following pre-discovery observations included: CJ96P020 A1995 05 02.33819 13 55 59.60 +27 46 03.2 NV003 15.0 675 CJ96P020 A1995 05 02.36736 13 55 58.15 +27 46 03.8 NV003 675 CJ96P020 A1995 05 02.39670 13 55 56.82 +27 46 03.5 NV003 675 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1995/ 960824 422 0.5+ 1.6- 961113 897 0.9- 0.0 950502 675 (3.8+ 0.9+) 960824 360 1.4+ 1.6- 961113 897 (2.6- 0.4+) 950502 675 1.0+ 1.0+ 960824 372 0.6- 0.8- 961115 897 0.6- 1.0+ 950502 675 0.2- 0.2+ 960824 372 0.5+ 0.6- 961115 897 0.6- 0.4+ 1996/ 960907 367 0.9- 0.3+ 961119 900 0.1- 0.6- 960810 413 (3.2+ 3.5-) 960907 367 1.0- 0.1- 961119 900 (2.7- 0.3+) 960810 413 (3.9+ 0.8+) 960910 372 1.8+ 0.1+ 961122 587 0.0 0.3+ 960811 413 1.7+ 0.4- 960910 867 (3.0- 0.6-) 961122 587 0.9+ 1.1- 960811 413 (2.3+ 1.4+) 960910 867 (2.9- 0.8-) 961128 897 0.2- 0.5- 960812 422 0.2+ 0.5+ 960910 867 (2.9- 1.0-) 961201 897 1.4- 0.6+ 960812 422 0.1- 0.3+ 960911 897 1.1- 0.8+ 961201 897 0.3- 0.4- 960812 422 0.2+ 0.1- 960911 897 0.2- 0.2+ 961202 900 0.4- 0.3+ 960812 422 0.6+ 0.9+ 960911 897 0.5+ 0.6+ 961203 360 0.3+ 0.3- 960812 367 0.1+ 0.1- 960914 871 (0.1- 2.7+) 961203 360 0.4+ 0.4- 960812 367 0.3+ 0.2- 960914 871 (0.5+ 3.0+) 961206 360 0.3+ 0.5- 960812 367 0.2+ 0.2- 960914 871 0.7- 1.7+ 961206 360 0.3+ 0.2- 960812 900 0.2+ 0.2- 960914 372 0.3+ 1.3+ 961208 900 1.4- 0.4+ 960812 900 0.1+ 0.1- 960915 900 0.0 0.9+ 961214 421 1.2+ 0.2+ 960812 867 1.2- 0.5+ 960915 900 0.1- 0.4+ 961214 421 1.1+ 0.2+ 960812 867 1.1- 0.4+ 960917 385 0.3- 0.2+ 961214 421 0.8+ 0.7+ 960812 867 0.5- 0.0 960917 385 0.0 0.4+ 961227 046 0.2- 1.5+ 960813 422 0.4+ 0.3- 960917 385 0.1+ 0.4+ 961227 046 (0.1+ 2.1+) 960813 422 0.1+ 0.3- 960917 886 0.9+ 1.0+ 961227 046 0.9- 0.9+ 960813 897 0.1- 0.1+ 960918 886 (0.1+ 3.9+) 961228 360 0.2+ 0.3+ 960813 400 1.0- 0.3+ 960918 886 1.0+ 0.6- 961228 360 0.2+ 0.2+ 960813 897 0.2+ 0.1+ 960918 897 0.4+ 0.1+ 961228 046 0.4+ 0.6+ 960813 897 0.1- 0.7- 960918 897 1.1- 0.8- 961228 046 0.2- 1.4+ 960813 400 0.6- 1.0+ 960918 372 (2.2+ 0.1+) 961228 046 0.1+ 1.0+ 960813 400 1.8- 0.9+ 960922 897 0.0 0.4+ 1997/ 960815 897 0.0 0.4- 960922 897 0.7- 0.6+ 970106 897 0.1+ 0.3- 960815 897 0.4- 0.8- 960927 900 0.1- 2.0+ 970106 897 0.5- 0.8+ 960815 897 0.5+ 0.1- 960927 900 (1.7- 2.2+) 970106 897 (2.3+ 0.2-) 960815 367 0.4+ 0.5- 961001 900 0.4- 1.5+ 970126 897 0.2+ 0.1- 960815 372 (3.4+ 0.1-) 961001 900 0.1- 1.3+ 970126 897 (0.1- 2.3+) 960815 367 0.8+ 0.6- 961001 413 0.3+ 0.2- 970209 360 0.4+ 0.3+ 960815 372 (3.6+ 0.4+) 961001 413 0.1+ 0.2- 970209 360 0.0 0.4- 960815 900 0.2+ 0.8- 961001 413 0.3+ 0.1- 970826 402 0.5+ 0.2- 960815 900 0.7+ 1.4- 961005 367 0.1- 1.1+ 970826 402 0.5+ 0.3+ 960816 108 (2.1- 0.4-) 961005 367 0.1- 0.3+ 970826 402 0.8+ 0.0 960816 108 1.1+ 0.1- 961005 900 0.2+ 0.5+ 970831 360 0.8+ 0.3- 960816 472 1.3- 0.2- 961005 900 0.2- 1.4+ 970831 360 0.6+ 0.1- 960816 472 1.2- 0.1+ 961005 360 0.4+ 0.1- 970831 360 0.8+ 0.2- 960816 108 2.0+ 0.3+ 961005 360 0.6+ 0.0 971102 360 (2.3- 0.2+) 960816 472 0.9- 0.1- 961009 360 0.3+ 0.5- 971102 360 1.4- 0.1+ 960816 108 0.3- 1.1- 961009 360 0.3+ 0.7- 971103 867 0.7- 0.4- 960817 422 0.6+ 0.7- 961009 360 0.3+ 0.9- 971103 867 0.2- 0.8- 960817 422 0.6+ 0.5- 961014 900 0.5+ 0.1+ 971103 867 0.7- 0.9- 960817 422 0.7+ 0.7- 961014 900 0.2- 0.2+ 971231 691 0.2+ 0.3- 960817 900 0.2+ 0.8- 961106 369 1.1- 0.3+ 971231 691 0.5+ 0.4- 960817 900 0.1+ 0.6- 961106 369 1.2- 0.8+ 971231 691 0.6+ 0.1- 960818 372 0.7- 0.4- 961106 369 1.3- 0.8+ 1998/ 960822 900 0.6+ 1.0- 961106 897 1.8- 0.2+ 980202 691 0.4+ 0.0 960822 900 0.9+ 1.1- 961106 897 0.6- 0.0 980202 691 0.6+ 1.2- 960824 422 0.9+ 1.6- 961106 897 1.5- 0.0 980202 691 0.5+ 0.5- ( ) -------- Rejected Obs.

Director, Computing Section Syuichi Nakano 2008 Sept. 2

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