Nakano Note (Nakano wa Kangaeru noda) NK 4996 126P/IRAS
The following improved orbital elements, by S. Nakano, are from 249 observations 1996 to 2023, 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 +/- 0.88 arc second. 2023 May observations show the residuals of -12" for Right Ascension and -36" for Declination from the prediction in NK 4266 with the delta-T correction = +0.03 day. See the previous orbit in NK 1149 (= MPC 59598), NK 1802 and NK 4266. Epoch = 2023 June 25.0 TT T = 2023 July 5.32624 +/- 0.00048 (m.e.) TT Peri. = 356.59386 +/- 0.00024 Node = 357.87165 +/- 0.00004 (2000.0) Inc. = 45.87573 +/- 0.00003 q = 1.7105266 +/- 0.0000010 AU e = 0.6965169 +/- 0.0000005 a = 5.6363154 +/- 0.0000101 AU n' = 0.07365651 +/- 0.00000020 P = 13.381 +/- 0.0000358 years A1 = +0.113 +/- 0.069 A2 = -0.05228 +/- 0.00029 T = 1996 Oct. 29.99383 TT Epoch = 1996 Nov. 13.0 TT Peri. = 356.88656 e = 0.6965850 Node = 357.70058 (2000.0) a = 5.6117481 AU Inc. = 45.96180 n'= 0.07414072 q = 1.7026888 AU P = 13.294 years T = 2010 Feb. 22.66287 TT Epoch = 2010 Feb. 13.0 TT Peri. = 356.72976 e = 0.6966051 Node = 357.76053 (2000.0) a = 5.6474603 AU Inc. = 45.83038 n'= 0.07343858 q = 1.7134105 AU P = 13.421 years The predicted orbit for the 2036 return is as follows: T = 2036 Oct. 10.65697 TT Epoch = 2036 Sept.24.0 TT Peri. = 356.48644 e = 0.6958209 Node = 357.82531 (2000.0) a = 5.5959002 AU Inc. = 46.02195 n'= 0.07445590 q = 1.7021561 AU P = 13.237 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1996/ 961229 118 0.1+ 1.1+ 091207 I10 0.8- 0.9- 960808 413 0.6- 1.0- 961229 118 0.1- 1.2+ 091207 I10 0.0 0.8- 960809 424 0.1- 1.2- 961230 897 0.0 1.0+ 091207 I10 (3.5+ 1.4-) 960809 424 0.3- 0.5- 961230 897 1.2+ 0.9+ 2010/ 960809 422 1.4- 0.5- 1997/ 100603 A77 (2.7- 0.8+) 960809 422 0.7- 0.6- 970107 605 (2.6+ 0.8+) 100603 A77 (0.7- 3.0+) 960809 422 1.1- 0.5- 970107 605 (2.7+ 0.3-) 100603 A77 1.7- 0.7+ 960809 422 0.9- 0.5- 970107 605 1.4+ 0.2+ 100609 349 (0.4+ 3.1+) 960809 422 1.5- 0.2- 970108 897 1.6+ 1.3+ 100609 349 (0.5- 2.5+) 960809 424 0.8- 0.7- 970108 897 1.9+ 0.1+ 100610 H06 1.0- 1.6+ 960810 424 1.8- 0.4+ 970112 360 0.4+ 0.4- 100610 H06 1.1- 1.5+ 960918 864 1.0+ 0.2- 970112 360 0.4+ 0.2- 100610 H06 0.0 1.8+ 960918 864 0.7+ 0.6- 970112 118 0.7+ 0.0 100611 H06 1.9- 1.8+ 960922 897 (5.7+ 2.4+) 970112 118 0.3+ 0.2- 100611 H06 (2.0- 2.3+) 960922 897 (3.8+ 1.7+) 970115 605 0.6+ 0.9+ 100613 A77 (2.0- 1.3+) 960922 897 (4.3+ 3.2+) 970115 605 1.8+ 1.2+ 100613 A77 (2.1- 1.3+) 960927 897 (1.5- 2.3-) 970116 402 1.0+ 0.2- 100613 A77 (2.0- 1.2+) 960927 897 0.9+ 0.8- 970116 402 1.7+ 0.2- 100621 A77 1.5- 0.6- 961001 372 0.2- 0.9+ 970116 402 1.5+ 0.5+ 100621 A77 1.9- 0.6+ 961001 372 0.3+ 0.3- 970121 118 0.2+ 0.9+ 100625 A77 (2.5- 0.3+) 961001 372 0.0 0.4+ 970121 118 0.1- 0.8+ 100625 A77 (2.1- 0.9+) 961004 372 0.4- 0.6+ 970124 118 0.5+ 0.2+ 100625 A77 (2.3- 1.1+) 961004 372 0.0 0.6- 970124 118 1.0+ 0.1- 100625 A77 1.7- 1.3+ 961004 360 0.6- 1.0- 970126 118 0.6+ 0.8+ 100709 204 0.6- 1.2+ 961004 360 0.6- 1.1- 970126 118 0.7+ 0.9+ 100709 204 0.9- 1.2+ 961005 900 0.4- 1.1- 970130 360 0.7+ 1.2+ 100709 160 0.1+ 1.0+ 961005 367 0.5- 1.6- 970130 360 1.0+ 1.1+ 100709 160 0.1- 1.0+ 961005 900 1.3+ 0.2+ 970209 897 (2.4+ 2.2+) 100709 160 0.4- 0.9+ 961005 367 1.1- 1.8- 970209 360 0.1+ 0.7+ 100711 A77 1.9- 1.5+ 961009 900 0.8+ 1.3- 970209 360 0.0 0.3+ 100711 A77 (2.0- 2.2+) 961009 900 0.1- 1.2- 970209 046 0.1+ 1.1+ 100711 A77 1.3- 1.5+ 961011 360 1.1- 0.9- 970209 046 0.0 0.2+ 100718 349 1.4- 1.2+ 961011 360 0.8- 1.0- 970209 046 0.2+ 0.6+ 100718 349 0.9- 0.9+ 961015 372 0.9- 0.9- 970216 118 0.3+ 1.5+ 100718 367 1.3- 0.9+ 961015 372 0.4+ 0.1- 970216 118 0.2+ 1.1+ 100718 367 1.5- 1.4+ 961016 897 (0.6+ 2.9-) 970216 118 1.3+ 1.8+ 100728 H15 1.4- 1.1+ 961016 897 (0.5+ 3.0-) 970219 118 1.1+ 1.9+ 100728 H15 0.4+ 1.6+ 961020 897 1.5+ 0.6- 970220 118 0.5+ 1.0+ 100801 160 0.4+ 0.6+ 961020 897 (2.3+ 0.8-) 970220 118 0.1+ 0.9+ 100801 160 0.3+ 0.7+ 961020 897 1.8+ 0.2- 970222 118 0.6- 0.8+ 100801 160 0.9- 0.8+ 961023 867 (0.6+ 2.1-) 970222 118 1.2- 0.6+ 100822 C10 0.3- 1.2+ 961023 867 (0.0 2.1-) 970224 360 0.7+ 0.4+ 100822 C10 0.3- 1.2+ 961025 046 0.5- 0.7- 970224 360 0.9+ 1.0+ 100825 349 0.6+ 1.9+ 961025 046 0.7- 0.5- 970301 118 1.3+ 1.4+ 100825 349 1.3+ 1.2+ 961025 046 0.4- 0.4- 970301 118 1.1+ 1.5+ 100910 349 0.6+ 0.6+ 961101 587 0.4- 0.6- 2009/ 100910 349 0.1- 1.0+ 961101 587 0.3- 0.8- 090527 D25 0.1- 1.5+ 100911 C10 0.6- 1.2+ 961102 124 0.2+ 1.5- 090527 D25 (0.5+ 2.1+) 100911 C10 1.0- 1.7+ 961102 124 0.1- 0.3- 090527 D25 (0.6- 2.2+) 100912 H10 (4.8- 4.2+) 961102 124 0.4+ 0.5- 090528 D25 0.6- 1.0+ 100915 A77 0.1- 1.6+ 961102 124 0.1- 0.9- 090528 D25 0.1- 1.5+ 100915 A77 0.3- 1.6+ 961102 124 0.4- 1.0- 090528 D25 0.5- 1.3+ 100916 A77 (1.2- 2.9+) 961103 046 0.0 0.7- 090703 I19 1.1+ 0.7+ 100916 A77 (0.9- 2.1+) 961103 046 0.2+ 0.0 090703 I19 1.3+ 0.1+ 100916 A77 0.8- 1.6+ 961103 046 0.2+ 0.7- 090703 I19 0.8+ 0.3+ 100920 215 0.9- 1.1+ 961112 801 0.8+ 0.8- 090824 844 1.4+ 1.7- 100920 215 0.3- 0.7+ 961112 801 0.3+ 1.3- 090824 844 0.1+ 0.4- 100920 215 0.3+ 0.2+ 961113 801 0.5+ 1.1- 090824 844 (2.1+ 0.9+) 100922 204 0.2- 0.5+ 961113 801 0.0 1.1- 090825 D25 0.3+ 0.2+ 100922 204 0.3- 0.6+ 961115 360 0.7- 0.6- 090825 D25 0.7+ 0.5- 101001 A77 0.4+ 0.3- 961119 897 0.8- 0.4- 090825 D25 0.2+ 0.2- 101001 A77 1.0- 0.2- 961119 897 0.6+ 0.6- 090907 D90 0.7+ 1.8+ 101001 A77 0.0 1.6+ 961125 897 1.0+ 0.4- 090907 D90 0.0 1.1+ 101005 H10 0.8- 0.5+ 961125 897 0.0 0.2- 090919 D90 0.1+ 0.1- 101018 A77 0.4- 1.1+ 961128 372 (2.7+ 1.1+) 090919 D90 0.1+ 0.1- 101018 A77 1.4- 1.5+ 961202 372 0.5- 1.3- 090919 D90 0.0 0.2- 101018 A77 0.5- 0.2+ 961202 372 1.2+ 0.4+ 091003 I36 0.8+ 0.9- 101026 H15 (0.7+ 3.2+) 961202 897 1.8+ 0.7+ 091003 I36 1.4+ 1.4- 101026 H15 1.3+ 0.2+ 961202 897 1.3+ 0.6+ 091003 I36 1.2+ 1.4- 101026 H15 0.7- 1.3- 961203 867 1.7+ 0.3+ 091004 I36 1.2+ 1.2- 2011/ 961203 867 1.7+ 0.2+ 091004 I36 0.8+ 1.4- 110131 A77 1.4+ 0.8- 961203 360 0.2+ 0.4- 091004 I36 1.9+ 0.9- 110131 A77 0.9+ 0.7- 961203 360 0.2+ 0.3- 091008 D25 0.5+ 0.3- 110131 A77 0.7+ 0.9- 961212 372 0.1- 2.3+ 091012 I31 1.0+ 0.8- 110207 204 0.4+ 0.1- 961212 046 0.3+ 0.6+ 091012 I19 0.8+ 0.8- 2023/ 961212 046 0.0 0.5+ 091012 I19 0.9+ 1.3- 230309 W88 0.6+ 0.1- 961212 046 0.2+ 0.5+ 091012 I19 0.4+ 0.3- 230309 W88 0.0 0.1+ 961214 421 0.3+ 1.0+ 091018 I36 0.4- 1.4- 230318 W88 0.1- 0.1- 961214 421 0.1+ 1.3+ 091018 I36 0.3+ 1.3- 230318 W88 0.3+ 0.4+ 961214 421 0.2+ 0.8+ 091018 I36 0.0 1.5- 230328 W88 0.2+ 0.4+ 961221 046 1.4+ 0.1+ 091022 I10 (3.6+ 0.9+) 230328 W88 1.2- 0.2+ 961221 605 (2.4+ 1.0+) 091022 I10 (4.2+ 0.0 ) 230408 W88 1.1+ 0.4+ 961221 046 0.7+ 0.4+ 091022 I10 (2.7+ 0.5+) 230408 W88 0.2- 0.6- 961221 046 0.9+ 0.1+ 091103 D90 0.0 0.8- 230408 W88 0.3- 0.0 961221 046 0.6+ 0.3+ 091103 D90 0.3+ 0.2- 230424 W88 0.7- 0.5+ 961221 605 (2.7+ 0.2+) 091106 I10 1.0+ 0.2- 230424 W88 0.7- 0.3+ 961221 605 (3.3+ 2.0+) 091106 I10 0.8+ 0.6- 230428 X03 0.5- 0.4+ 961223 605 1.8+ 0.7+ 091106 I10 0.8+ 0.6- 230428 X03 0.4- 0.4+ 961223 605 1.3+ 1.0+ 091107 I10 0.5+ 0.4+ 230428 X03 0.6- 0.6+ 961223 605 1.8+ 0.4+ 091108 415 0.4- 0.6- 230501 X07 0.1+ 1.0+ 961227 118 0.3+ 0.6+ 091108 415 0.3+ 0.0 230501 X07 0.0 1.0+ 961227 118 0.4+ 0.3+ 091110 I10 0.1- 0.8- 230501 X07 0.3- 0.9+ 961228 360 0.2+ 0.7+ 091110 I10 0.1+ 0.5- 230501 X07 0.4- 0.7+ 961228 360 0.2+ 0.6+ 091110 I10 0.7+ 0.2- 230506 W68 0.8- 0.1- 961228 046 0.7+ 0.9+ 091205 I10 0.5+ 0.5+ 230506 W68 1.0- 0.2+ 961228 046 0.5+ 0.1+ 091205 I10 0.7+ 1.5- 230506 W68 0.8- 0.5+ 961228 046 0.2+ 0.5+ 091205 I10 0.4+ 0.7- 230506 W68 1.3- 0.4- 961228 605 (2.6+ 2.0+) 091206 415 0.0 0.9- 961228 605 1.4+ 1.7+ 091206 415 1.1+ 0.8- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2023 May 14