Nakano Note (Nakano wa Kangaeru noda) NK 3192 138P/Shoemaker-Levy 7
The following improved orbital elements, by S. Nakano, are from 88 observations 1991 to 2013, including planetary perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas, Vesta, and non-gravitational effect of style II. The mean residual is +/- 0.52 arc second. The comet will pass 0.92 AU from Jupiter on 2030 Dec. 23 UT. See the previous orbits in NK 625, NK 849 (= MPC 45657) and NK 1768 (= MPC 65938). Epoch = 2012 June 2.0 TT T = 2012 June 11.73164 +/- 0.00044 (m.e.) TT Peri. = 95.62276 +/- 0.00015 Node = 309.40825 +/- 0.00006 (2000.0) Inc. = 10.08334 +/- 0.00002 q = 1.7005757 +/- 0.0000020 AU e = 0.5307021 +/- 0.0000006 a = 3.6236595 +/- 0.0000017 AU n' = 0.14288380 +/- 0.00000010 P = 6.898 +/- 0.0000049 years A1 = +0.027 +/- 0.021 A2 = -0.01029 +/- 0.00030 T = 1991 Oct. 27.47782 TT Epoch = 1991 Oct. 31.0 TT Peri. = 91.91100 e = 0.5427279 Node = 312.96852 (2000.0) a = 3.5644111 AU Inc. = 10.27829 n'= 0.14646113 q = 1.6299057 AU P = 6.729 years T = 1998 Aug. 24.56551 TT Epoch = 1998 Aug. 15.0 TT Peri. = 95.52287 e = 0.5311190 Node = 309.51794 (2000.0) a = 3.6196877 AU Inc. = 10.08892 n'= 0.14311904 q = 1.6972029 AU P = 6.887 years T = 2005 July 19.90878 TT Epoch = 2005 July 9.0 TT Peri. = 95.65007 e = 0.5294663 Node = 309.44309 (2000.0) a = 3.6284421 AU Inc. = 10.07936 n'= 0.14260140 q = 1.7073043 AU P = 6.912 years The predicted orbit for the 2019 return is as follows: T = 2019 May 2.76176 TT Epoch = 2019 Apr. 27.0 TT Peri. = 95.61440 e = 0.5301117 Node = 309.33124 (2000.0) a = 3.6238454 AU Inc. = 10.08962 n'= 0.14287281 q = 1.7028026 AU P = 6.898 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1991/ 980725 691 0.3+ 0.0 051230 G96 0.2- 0.4- 911113 675 0.1- 0.2- 980725 691 0.8+ 0.3- 051230 G96 0.3- 0.1- 911113 675 0.1- 1.0- 980726 691 0.5- 0.1+ 051230 G96 0.2- 0.2- 911115 675 1.5- 0.9- 980726 691 0.9- 0.2- 051230 G96 0.1- 0.3- 911116 675 (4.5+ 0.8+) 980726 691 0.3+ 0.1- 2006/ 911128 372 0.5+ 1.1+ 981114 867 0.1- 0.3- 060104 691 0.0 0.3+ 911128 372 0.8- 0.5- 981114 867 0.3- 0.6- 060104 691 0.2- 0.7+ 911130 675 0.3+ 0.9+ 981114 867 0.8+ 0.9- 060104 691 0.2+ 0.4+ 911130 675 0.1- 0.3- 981115 360 1.0- 0.5- 060123 215 0.8- 0.0 911201 675 0.3+ 0.5- 981115 360 0.7- 0.1- 060220 691 0.0 0.0 911203 675 0.2+ 1.7- 981115 360 0.9- 0.7- 060220 691 0.1- 0.3+ 911204 372 1.0- 0.9+ 981123 693 0.6+ 0.4+ 060220 691 0.1- 0.7+ 911204 372 (2.3- 2.2+) 981123 693 0.7+ 0.4+ 060224 G96 0.1- 0.3- 911205 801 1.0+ 0.1+ 981123 693 0.9+ 0.4+ 060224 G96 0.5- 0.1- 911205 801 0.2+ 1.1+ 981216 360 0.3- 0.4+ 060224 G96 0.3+ 0.1+ 911206 801 0.5- 0.3- 981216 360 0.1+ 0.1+ 060224 G96 0.5- 0.2+ 911206 801 (1.1- 3.2-) 981216 360 0.4+ 0.2+ 2012/ 911208 372 (0.3- 2.5+) 1999/ 120824 H06 0.3+ 0.2- 911208 372 0.8- 1.0+ 990115 693 0.2+ 0.2- 120824 H06 0.6+ 0.3+ 911210 657 0.3- 0.7+ 990115 693 0.2+ 0.3- 120824 H06 0.2- 0.3+ 911210 657 0.7+ 1.3+ 990115 693 0.3+ 0.4- 120915 H06 0.9+ 0.8+ 911210 657 1.4+ 0.5- 990212 693 0.2+ 0.9+ 120915 H06 0.0 0.8+ 911211 372 (0.6+ 2.7+) 990212 693 0.1+ 0.9+ 120915 H06 0.8- 0.6+ 911213 372 0.5+ 0.6+ 990212 693 0.1+ 0.6+ 120920 H06 (0.7+ 2.4+) 911224 950 1.8- 0.7- 2005/ 120920 H06 (0.9+ 3.0+) 911224 950 0.8- 0.7+ 051028 G96 0.7+ 0.4+ 120920 H06 (0.5+ 3.0+) 911229 372 1.3+ 0.8- 051028 G96 0.0 0.6+ 2013/ 911230 372 0.6- 0.6- 051028 G96 0.1+ 0.9+ 130203 F51 0.1+ 0.1- 1992/ 051028 G96 0.0 0.5+ 130203 F51 0.2+ 0.1- 920101 801 0.6+ 0.5- 051029 G96 0.5+ 0.0 130203 F51 0.0 0.0 920101 801 0.8+ 0.7- 051029 G96 0.5+ 0.2+ 130203 F51 0.0 0.1- 920106 801 0.5+ 0.4- 051029 G96 0.7+ 0.3+ 130206 691 0.1- 0.3- 920106 801 0.4+ 0.5- 051222 568 0.7- 0.2- 130206 691 0.4- 0.5+ 1998/ 051222 568 0.1- 0.2- 130206 691 1.8- 0.1- 980725 691 0.7+ 0.3- 051222 568 0.1+ 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2016 July 13