Nakano Note (Nakano wa Kangaeru noda) NK 2776 11P/Tempel-Swift-LINEAR

The following improved orbital elements, by S. Nakano, are from 58 observations 1908 to 2014, 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 +/- 1.04 arc seconds. The 2014 observations show the residual of -238" and +77" from the prediction in NK 2163 (= NK1197, HICQ 2014) with the delta-T correction = +0.14 day. See the previous orbits in NK 396, NK 686 and NK 1197. Epoch = 2014 Aug. 11.0 TT T = 2014 Aug. 26.92207 +/- 0.00110 (m.e.) TT Peri. = 164.06506 +/- 0.00056 Node = 240.43603 +/- 0.00023 (2000.0) Inc. = 13.57596 +/- 0.00006 q = 1.5485963 +/- 0.0000036 AU e = 0.5459177 +/- 0.0000012 a = 3.4103871 +/- 0.0000036 AU n' = 0.15649431 +/- 0.00000025 P = 6.298 +/- 0.0000100 years A1 = +0.060 +/- 0.013 A2 = -0.00426 +/- 0.00009 T = 2001 Dec. 30.75411 TT Epoch = 2002 Jan. 6.0 TT Peri. = 163.63305 e = 0.5391234 Node = 240.70988 (2000.0) a = 3.4371113 AU Inc. = 13.46079 n'= 0.15467270 q = 1.5840842 AU P = 6.372 years [ T = 2008 May 4.65751 TT Epoch = 2008 May 14.0 TT Peri. = 163.89804 e = 0.5449532 Node = 240.52490 (2000.0) a = 3.4141291 AU Inc. = 13.55351 n'= 0.15623710 q = 1.5535886 AU P = 6.308 years ] The predicted orbit for the 2020 return is as follows: T = 2020 Nov. 26.25788 TT Epoch = 2020 Nov. 7.0 TT Peri. = 167.94631 e = 0.5769626 Node = 238.91571 (2000.0) a = 3.2828190 AU Inc. = 14.42129 n'= 0.16570426 q = 1.3887553 AU P = 5.948 years The following residuals in seconds of arc are from the above orbital elements. Note observations shown by asterisk are not bad. Date Code Residual(") Date Code Residual(") Date Code Residual(") 1908/ 011017 704 0.4+ 0.1- 011219 704 0.4- 0.9+ 080930 020(11.0- 5.1-)* 011017 704 0.5+ 0.5- 011219 734 0.1- 0.6+ 081001 020 (8.4- 3.7-)* 011017 704 0.7- 1.2+ 011219 734 (2.9+ 0.2+) 081003 020(10.6- 4.6-)* 011017 704 0.6- 0.7- 011219 734 (2.3+ 2.0+) 081006 020(10.7- 0.0 )* 011017 704 0.2- 0.5+ 011226 608 1.0- 0.3+ 081023 020 2.0- 1.4+ 011207 704 0.7- 1.4- 011226 608 0.6+ 0.0 081027 020 2.8- 0.5+ 011207 704 0.5- 1.8- 2002/ 081028 020 0.6- 3.6- 011207 704 0.8- 1.9- 020104 349 1.0- 1.1+ 081029 020 0.2- 2.9- 011207 704 0.8- 0.9- 020104 349 (1.6+ 2.4+) 081030 020 2.6+ 1.3+ 011208 704 0.1+ 0.2+ 020105 360 0.1- 0.2- 081031 020 3.1- 0.1+ 011208 704 0.1+ 0.2- 020105 360 0.4- 0.3- 081031 020 1.5+ 0.2+ 011208 704 0.2+ 1.2+ 020105 360 0.0 0.4- 081031 008 (2.3+ 4.3-) 011208 704 0.1+ 0.4+ 020111 360 0.2+ 0.5- 081106 020 3.1+ 0.7+ 011211 704 0.4- 0.2+ 020111 360 0.5- 0.3- 081121 020(10.8+ 6.8-)* 011211 704 0.7- 0.9+ 020111 360 0.2+ 0.7- 081126 008(13.7+ 6.1-)* 011211 704 0.7+ 0.1+ 020207 360 0.7+ 0.8- 081129 008(18.9+ 8.3-) 011211 704 0.4+ 0.4+ 020207 360 0.5+ 1.2- 081221 754(40.0+ 14.5-) 011211 704 0.0 0.3+ 020207 360 0.9+ 0.2- 081225 754(39.2+ 13.1-) 011217 704 1.4+ 0.8+ 2014/ 2001/ 011217 704 1.3+ 0.6+ 140901 C10 0.8+ 1.3+ 010801 644 0.0 0.2+ 011217 704 (4.9+ 2.2+) 140901 C10 0.7+ 1.8+ 010910 704 0.3+ 0.8- 011217 704 1.7+ 0.2+ 140901 C10 0.1+ 0.3+ 010910 704 1.1+ 0.7- 011219 704 (0.7- 2.2+) 140903 C10 1.4- 0.1+ 010910 704 0.2+ 0.8+ 011219 704 0.3- 0.9+ 140903 C10 0.9+ 1.3- 010910 704 0.3- 0.9- 011219 704 1.0- 0.8+ 140903 C10 1.1- 1.7- 010930 644 0.1- 0.2- 011219 734 (2.5+ 2.3-) 010930 644 0.1- 0.0 011219 734 (1.4+ 2.8-) ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2014 Sept. 24

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