Nakano Note (Nakano wa Kangaeru noda) NK 5251 146P/Shoemaker-LINEAR
The following improved orbital elements, by S. Nakano, are from 222 observations 2000 to 2024, 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 +/- 0.74 arc second. Residuals for re-observations in 2024 were +25" for Right Ascension and +28" for Declination from the prediction in NK 3258 (= CH 2023) with the delta-T correction = -0.017 day. The comet has passed 0.56 AU from Jupiter on 2006 Apr. 29 UT. See the previous orbits in NK 513, NK 655, NK 1200, NK 1684, NK 3258. Epoch = 2024 July 29.0 TT T = 2024 Aug. 5.44057 +/- 0.00011 (m.e.) TT Peri. = 317.07726 +/- 0.00008 Node = 53.37506 +/- 0.00005 (2000.0) Inc. = 23.12296 +/- 0.00001 q = 1.4195488 +/- 0.0000007 AU e = 0.6473939 +/- 0.0000002 a = 4.0258767 +/- 0.0000031 AU n' = 0.12201504 +/- 0.00000014 P = 8.078 +/- 0.0000093 years A1 = +0.310 +/- 0.010 A2 = -0.03998 +/- 0.00010 T = 2000 July 14.31610 TT Epoch = 2000 June 25.0 TT Peri. = 317.77316 e = 0.6667715 Node = 55.35625 (2000.0) a = 3.9589974 AU Inc. = 21.61632 n'= 0.12511986 q = 1.3192508 AU P = 7.877 years T = 2008 May 21.35431 TT Epoch = 2008 May 14.0 TT Peri. = 316.84062 e = 0.6479276 Node = 53.56627 (2000.0) a = 4.0267574 AU Inc. = 23.07928 n'= 0.12197501 q = 1.4177100 AU P = 8.080 years T = 2016 June 30.13551 TT Epoch = 2016 June 21.0 TT Peri. = 316.98378 e = 0.6460287 Node = 53.45299 (2000.0) a = 4.0401434 AU Inc. = 23.07255 n'= 0.12136931 q = 1.4300948 AU P = 8.121 years The predicted orbit for the 2032 return is as follows: T = 2032 Aug. 15.23997 TT Epoch = 2032 July 27.0 TT Peri. = 316.59253 e = 0.6413387 Node = 52.33026 (2000.0) a = 4.0515536 AU Inc. = 23.45923 n'= 0.12085697 q = 1.4531355 AU P = 8.155 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2000/ 160709 349 0.9+ 1.2+ 161210 J22 0.6- 0.2+ 000927 704 (2.7- 3.3-) 160709 349 0.8+ 1.0+ 161210 J22 0.3+ 0.2+ 000927 704 (2.9- 3.5-) 160728 349 0.7+ 0.7+ 161223 130 0.8+ 0.3- 000927 704 0.1+ 1.2- 160728 349 0.9+ 0.8+ 161223 130 0.1+ 0.9- 000927 704 (3.7- 1.1-) 160730 W96 0.2+ 0.6+ 2017/ 000928 704 2.2- 2.2+ 160730 W96 1.2- 0.1- 170101 215 0.6- 0.6- 000928 704 1.4+ 0.3- 160802 A71 0.4- 0.1- 170101 215 0.4- 0.4- 000928 704 0.7+ 0.4+ 160802 A71 0.5- 0.2+ 170101 215 0.7- 0.2- 000928 684 0.4+ 0.4- 160804 A71 0.2- 0.5- 170103 F51 0.5+ 0.1+ 000928 684 1.0+ 0.7- 160804 A71 0.5- 0.4+ 170103 F51 0.5+ 0.1+ 000928 684 0.1+ 0.2+ 160804 215 0.8+ 0.0 170103 F51 0.4+ 0.2+ 000929 046 0.9+ 0.3- 160804 215 0.6+ 0.4+ 2024/ 000929 046 1.6+ 0.3+ 160804 215 0.2+ 1.0+ 240506 Q62 0.0 0.5+ 000929 046 0.6+ 0.1+ 160808 W96 0.7- 1.1- 240506 Q62 0.0 0.3- 000929 046 1.4+ 0.5- 160808 W96 0.6- 0.6- 240514 M22 0.4+ 0.1+ 000929 046 0.8+ 0.3- 160808 367 0.4- 1.1- 240514 M22 0.3+ 0.4+ 000929 046 0.7+ 0.1- 160808 367 0.1+ 0.6- 240514 M22 0.1+ 0.3- 000929 118 0.1- 0.4+ 160813 G40 0.4- 0.0 240514 M22 0.6+ 0.0 000929 118 0.4- 0.6+ 160813 G40 0.3- 0.7+ 240519 W68 0.1+ 0.5- 000929 557 0.2- 0.2- 160813 D95 0.5- 0.1+ 240519 W68 0.2- 0.9- 000929 557 0.4+ 0.1- 160813 D95 0.2+ 0.5- 240519 W68 0.0 0.7- 000929 557 0.2- 0.2- 160813 D95 0.5+ 0.2- 240519 W68 0.1- 1.0- 001001 704 1.2+ 0.2+ 160814 A71 0.6- 0.2+ 240520 Q62 0.2+ 0.1- 001001 704 0.9+ 0.1+ 160814 A71 0.6- 0.1- 240520 Q62 0.0 0.2- 001001 704 1.1- 0.9+ 160821 W96 2.0- 0.7- 240520 Q62 0.0 0.1- 001002 704 (2.6+ 2.6+) 160821 W96 0.2+ 0.0 240521 M22 0.6- 0.3- 001002 704 1.4+ 0.6- 160825 B96 (0.3- 2.9-) 240521 M22 0.3+ 0.3- 001002 704 1.1- 0.2+ 160825 B96 0.6- 1.4- 240521 M22 0.3- 0.4- 001106 704 0.8+ 1.1- 160825 B96 1.2- 1.2- 240521 M22 0.2- 0.4- 001106 704 1.2- 0.9- 160825 B96 0.7+ 0.7- 240526 M22 0.0 0.1- 001106 704 0.3- 0.6- 160825 B96 1.9- 1.5- 240526 M22 0.2+ 0.2- 001106 402 0.0 1.8- 160825 B96 0.2+ 1.1- 240526 M22 0.5+ 0.2- 001106 402 0.8- 1.1- 160828 585 0.9- 0.2+ 240526 M22 0.5- 0.1- 001106 402 (9.7- 1.2+) 160828 585 1.3- 0.2+ 240528 X03 0.5+ 0.0 001126 705 0.7- 1.7- 160828 585 1.6- 0.1- 240528 X03 0.1+ 0.1- 001126 705 0.7- 1.5- 160828 585 0.7- 0.6+ 240528 X03 0.4+ 0.1+ 001126 705 0.7- 1.6- 160828 585 0.7- 1.3+ 240528 X03 0.4+ 0.1- 001128 360 0.7- 2.0- 160828 585 0.7- 0.3- 240528 X03 0.3+ 0.1+ 001128 360 1.7- 1.9- 160828 585 1.3- 0.0 240529 M22 0.0 0.2- 001204 402 1.8- 2.2- 160828 585 0.4+ 0.6+ 240529 M22 0.4+ 0.2+ 001204 402 (0.5- 2.5-) 160828 585 0.0 1.0+ 240529 M22 0.1- 0.2+ 001204 402 (1.3- 2.5-) 160902 A77 0.8+ 1.4+ 240529 M22 0.8+ 0.4+ 001205 360 0.9- 2.0- 160902 A77 0.2+ 1.0+ 240530 M22 0.6+ 0.1- 001205 360 1.1- 2.2- 160902 A77 0.1- 0.8+ 240530 M22 0.3+ 0.8- 001229 360 (1.0- 2.9-) 161005 B96 (2.4- 1.2+) 240530 M22 0.2- 0.4+ 001229 360 (1.3- 2.7-) 161005 B96 0.6- 1.2+ 240531 W68 0.3+ 0.1+ 001230 699 (2.5- 3.8-) 161007 C51 0.9+ 0.3- 240531 W68 0.1- 0.4- 001230 699 (1.5- 4.6-) 161008 C51 0.7- 0.2- 240531 W68 0.2- 0.2+ 001230 699 1.5- 2.1- 161008 C51 1.6- 1.0- 240531 W68 0.0 0.3+ 001230 699 (3.2- 3.7-) 161008 C51 (3.5- 0.6+) 240608 W68 0.1- 0.2- 2001/ 161008 C51 0.1+ 0.1+ 240608 W68 0.1+ 0.3- 010220 867 0.6- 1.9- 161008 C51 0.5- 1.7+ 240608 W68 0.1- 0.4- 010220 867 (0.6- 2.7-) 161008 C51 1.4+ 0.3+ 240618 G40 0.3+ 0.1- 010220 867 0.4- 2.1- 161009 I81 0.4+ 1.7+ 240618 G40 0.1+ 0.1- 2008/ 161009 I81 1.4- 1.3+ 240619 T05 0.0 0.2- 080821 461 (4.1+ 2.5+) 161009 I81 2.1- 0.2+ 240619 T05 0.0 0.1- 080821 461 (3.6+ 2.6+) 161009 I81 (5.3- 1.3-) 240619 T05 0.0 0.2+ 080825 461 (4.1+ 2.0+) 161009 C51 1.4+ 0.7+ 240619 T05 0.0 0.3+ 080825 461 (3.9+ 1.3+) 161010 I81 0.3- 0.5- 240624 M22 0.1+ 0.1+ 080825 461 (4.0+ 1.5+) 161010 I81 0.8- 1.0- 240624 M22 0.2- 0.2- 080903 114 0.8+ 0.1- 161010 I81 1.5- 1.0- 240624 M22 0.0 0.2+ 080903 114 2.2+ 0.2+ 161011 703 1.3+ 0.3- 240624 M22 0.2+ 0.1+ 080903 114 1.1+ 0.1- 161011 703 0.4- 0.3- 240627 T05 0.4+ 0.1- 080903 114 1.7+ 1.2+ 161011 703 (2.5- 0.2-) 240627 T05 0.1+ 0.5+ 080903 114 (4.5+ 2.6+) 161025 I81 0.8- 0.5+ 240627 T05 0.0 0.1+ 080903 114 (4.1+ 1.8+) 161025 I81 1.0- 0.3+ 240627 T05 0.1- 0.6+ 080903 114 (3.3+ 2.1+) 161025 I81 1.5- 0.2+ 240628 M22 0.0 0.4+ 080909 215 1.2+ 0.4- 161031 J22 0.9- 1.5+ 240628 M22 0.5+ 0.3+ 2016/ 161031 J22 1.4- 0.5+ 240628 M22 0.1- 0.2+ 160419 Q62 1.1- 0.5- 161101 I81 1.1- 1.0+ 240628 M22 0.1- 0.1+ 160419 Q62 0.8- 0.5- 161101 I81 0.6- 1.0+ 240702 M22 0.0 0.2+ 160419 Q62 0.4- 0.5- 161101 I81 0.3- 1.1+ 240702 M22 0.0 0.1- 160504 Q62 0.1- 0.4+ 161119 349 1.8- 0.2+ 240702 M22 0.1+ 0.1- 160504 Q62 0.1+ 0.5+ 161119 349 (2.6- 0.6-) 240702 M22 0.0 0.1- 160514 Q62 0.1- 0.6- 161128 B96 (1.1- 3.1+) 240704 G40 0.7+ 0.7+ 160514 Q62 0.4- 0.6- 161128 B96 (1.2- 2.3+) 240704 G40 0.5- 0.3+ 160514 Q62 0.3+ 0.4- 161130 G45 0.5+ 0.4- 240704 W68 0.3- 0.4- 160514 Q62 0.4- 0.4- 161130 G45 0.2- 0.0 240704 W68 0.2- 0.3+ 160614 Q62 0.0 0.0 161130 G45 0.3- 0.1+ 240704 W68 0.2- 0.4+ 160614 Q62 0.4+ 0.3+ 161130 G45 0.5+ 0.5+ 240704 W68 0.1- 0.3- 160703 Q62 0.5+ 0.3+ 161130 G45 0.5+ 0.6+ 240704 W68 0.4- 0.1- 160703 Q62 0.2+ 0.0 161201 G45 0.5- 0.3- 240705 T05 0.0 0.1- 160703 Q62 0.5+ 0.1+ 161201 G45 0.3- 0.4+ 240705 T05 0.1- 0.0 160703 Q62 0.5+ 0.1+ 161201 G45 0.1+ 0.3+ 240705 T05 0.4- 0.4- 160707 G40 0.4+ 0.5+ 161201 G45 0.1- 0.2- 240705 T05 0.3+ 0.2+ 160707 G40 0.3+ 0.2+ 161210 J22 1.2- 2.0- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2024 July 9