Nakano Note (Nakano wa Kangaeru noda) NK 2304 148P/Anderson-LINEAR

The following improved orbital elements, by T. Kobayashi, are from 108 observations 1963 to 2008, including planetary perturbations by Mercury to Pluto and non-gravitational effect of style II. The mean residual is +/- 0.71 arc second. See the previous orbit in NK 1201 (= HICQ 2007). Epoch = 2008 May 14.0 TT T = 2008 May 22.76586 +/- 0.00046 (m.e.) TT Peri. = 6.68388 +/- 0.00037 Node = 89.80403 +/- 0.00044 (2000.0) Inc. = 3.67839 +/- 0.00005 q = 1.7027616 +/- 0.0000075 AU e = 0.5378930 +/- 0.0000019 a = 3.6847782 +/- 0.0000213 AU n' = 0.13934361 +/- 0.00000102 P = 7.073 +/- 0.0000635 years A1 = +0.321 +/- 0.021 A2 = -0.00265 +/- 0.00054 T = 1963 Oct. 28.51165 TT Epoch = 1963 Oct. 18.0 TT Peri. = 352.46553 e = 0.4974221 Node = 98.12089 (2000.0) a = 3.9503251 AU Inc. = 4.50750 n'= 0.12553210 q = 1.9853459 AU P = 7.851 years [ T = 1971 Sept.13.13432 TT Epoch = 1971 Sept. 6.0 TT Peri. = 352.54590 e = 0.4961967 Node = 98.08636 (2000.0) a = 3.9621683 AU Inc. = 4.50340 n'= 0.12496969 q = 1.9961536 AU P = 7.887 years ] [ T = 1979 July 25.56473 TT Epoch = 1979 July 26.0 TT Peri. = 352.58312 e = 0.4977384 Node = 98.07260 (2000.0) a = 3.9481347 AU Inc. = 4.50902 n'= 0.12563659 q = 1.9829964 AU P = 7.845 years ] [ T = 1987 Apr. 17.06931 TT Epoch = 1987 May 5.0 TT Peri. = 6.44634 e = 0.5428663 Node = 89.85395 (2000.0) a = 3.6571064 AU Inc. = 3.68984 n'= 0.14092813 q = 1.6717866 AU P = 6.994 years ] T = 1994 Apr. 21.62697 TT Epoch = 1994 May 8.0 TT Peri. = 6.60650 e = 0.5417913 Node = 89.80476 (2000.0) a = 3.6622786 AU Inc. = 3.68550 n'= 0.14062968 q = 1.6780880 AU P = 7.009 years T = 2001 May 1.96255 TT Epoch = 2001 May 11.0 TT Peri. = 6.71215 e = 0.5394447 Node = 89.80521 (2000.0) a = 3.6776253 AU Inc. = 3.68231 n'= 0.13975033 q = 1.6937499 AU P = 7.053 years The predicted orbit for the 2015 return is as follows: T = 2015 June 13.78156 TT Epoch = 2015 June 27.0 TT Peri. = 6.69753 e = 0.5394731 Node = 89.78105 (2000.0) a = 3.6740954 AU Inc. = 3.68196 n'= 0.13995178 q = 1.6920197 AU P = 7.042 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1963/ 001120 071 0.5- 0.5- 071004 703 0.5- 0.6- 631122 675 0.1+ 0.8+ 001120 071 0.9+ 0.1- 071004 703 0.2+ 0.3- 631123 675 0.3+ 0.2- 001120 071 1.1- 0.9- 071004 703 0.1- 0.1+ 631124 675 0.2- 0.4+ 001120 071 1.5- 0.7- 071013 704 0.4- 0.1- 631125 675 0.2+ 1.5+ 001120 071 0.1+ 1.3- 071013 704 0.4- 0.6+ 1993/ 001122 071 0.4- 1.1- 071013 704 0.6- 0.3- 931107 260 1.0- 0.3- 001122 071 (1.4- 2.1-) 071013 704 0.1- 0.3- 931107 260 0.4+ 0.5+ 001122 071 1.2- 1.2- 071015 699 0.0 0.2- 2000/ 001124 693 0.6- 0.8- 071015 699 0.7- 0.6+ 000924 704 1.6+ 0.5+ 001124 693 0.7- 0.6- 071015 699 1.0+ 0.3- 000924 704 0.5+ 0.2- 001222 699 0.8+ 0.5+ 071015 703 0.2+ 0.6+ 000924 704 0.6- 1.2- 001222 699 0.1+ 0.5+ 071015 699 1.2+ 0.2+ 000926 699 0.5+ 0.2- 001222 699 0.1- 0.0 071015 703 0.7+ 0.5- 000926 699 0.2- 0.3+ 001222 699 0.3+ 0.7+ 071015 703 1.8+ 0.1+ 000926 699 0.6- 0.1- 001222 360 0.3- 0.4- 071015 703 0.3- 1.0+ 000926 699 0.6- 0.3+ 001222 360 0.2- 0.6- 071031 215 1.1+ 0.7- 001001 699 0.3+ 0.4+ 001223 704 0.2- 0.2- 071102 703 1.2+ 0.2+ 001001 699 0.4- 1.3+ 001223 704 0.7+ 0.1+ 071102 703 0.2+ 1.2+ 001001 699 0.4- 0.6+ 001223 704 0.9- 0.0 071102 703 0.5- 0.6+ 001001 699 0.3- 1.0+ 001223 704 1.0- 0.1+ 071102 703 0.0 0.3+ 001002 704 0.7+ 0.0 001223 704 0.6+ 1.1+ 071105 215 1.2+ 0.8- 001002 704 1.1- 0.0 2001/ 071130 130 0.8+ 0.2+ 001002 704 0.2+ 0.4- 010120 704 0.7+ 0.3- 2008/ 001002 704 0.5- 0.2+ 010120 704 0.1+ 0.1- 080120 A77 0.5- 0.4- 001025 704 0.7- 0.5+ 010120 704 1.5+ 0.9- 080120 A77 0.2- 0.1+ 001025 704 1.0- 0.0 010120 704 0.0 1.0- 080120 A77 1.0- 0.9- 001025 704 0.9+ 0.9+ 010120 704 0.2- 0.9- 080202 215 0.4+ 0.4+ 001025 704 1.1+ 0.8+ 010121 704 0.3+ 0.3- 080202 204 1.4- 0.8- 001025 704 0.4- 0.5- 010121 704 1.2+ 0.5+ 080207 215 0.1- 0.4- 001025 704 0.4- 0.2+ 010121 704 0.6+ 0.2+ 080207 215 0.5+ 0.6- 001025 704 0.3+ 0.5+ 010121 699 1.2+ 1.0+ 080207 215 0.9+ 0.7- 001025 704 0.5+ 0.9- 010121 699 (2.5+ 1.1+) 080223 204 0.4- 0.3- 001102 704 0.2- 0.5+ 010121 699 1.6+ 1.8+ 080223 204 0.0 0.2+ 001102 704 0.2- 1.2+ 010121 704 1.1+ 0.1+ 080306 G96 0.8+ 0.5- 001102 704 0.3- 0.1+ 010121 699 1.5+ 1.3+ 080306 G96 0.3- 0.4- 001118 699 0.9+ 0.2+ 2007/ 080306 G96 0.7+ 0.5- 001118 699 0.7+ 1.8+ 070905 413 0.7+ 0.3- 080306 G96 0.1+ 0.5- 001118 699 0.0 0.7+ 070905 413 0.1+ 1.1- 080323 204 0.4- 0.8- 001118 699 1.0- 0.3- 071004 703 0.4- 0.1+ ( ) -------- Rejected Obs.

Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2012 July 29

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