Nakano Note (Nakano wa Kangaeru noda) NK 3170 104P/Kowal 2
The following improved orbital elements, by S. Nakano, are from 116 observations 2003 to 2016, 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 +/- 0.86 arc second. The recent residuals from a linked orbit 1997-2016 in NK 3046 (= HICQ 2016) were +40" up for Right Ascension and -15" for Declination with the delta-T correction = /-0.025 day. Orbit coundn't be linked with the old observations before 1998 returns. Epoch = 2016 Apr. 2.0 TT T = 2016 Mar. 28.15325 +/- 0.00059 (m.e.) TT Peri. = 200.66924 +/- 0.00074 Node = 235.43328 +/- 0.00037 (2000.0) Inc. = 10.25512 +/- 0.00009 q = 1.1791536 +/- 0.0000015 AU e = 0.6385417 +/- 0.0000041 a = 3.2622120 +/- 0.0000114 AU n' = 0.16727683 +/- 0.00000087 P = 5.892 +/- 0.0000308 years A1 = -2.284 +/- 0.108 A2 = -0.23063 +/- 0.02727 A3 = -1.75519 +/- 0.04505 T = 2004 May 9.17340 TT Epoch = 2004 Apr. 25.0 TT Peri. = 192.04443 e = 0.5854977 Node = 246.07417 (2000.0) a = 3.3680846 AU Inc. = 15.49156 n'= 0.15945186 q = 1.3960790 AU P = 6.181 years [ T = 2010 May 4.95306 TT Epoch = 2010 May 4.0 TT Peri. = 200.54734 e = 0.6384280 Node = 235.48809 (2000.0) a = 3.2619408 AU Inc. = 10.25226 n'= 0.16729770 q = 1.1794265 AU P = 5.891 years ] The predicted orbit for the 2022 return is as follows: T = 2022 Jan. 11.17367 TT Epoch = 2022 Jan. 21.0 TT Peri. = 227.16304 e = 0.6654139 Node = 207.36686 (2000.0) a = 3.2063506 AU Inc. = 5.72423 n'= 0.17166729 q = 1.0728002 AU P = 5.741 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2003/ 160116 G40 1.8+ 0.3+ 160401 H45 0.4- 0.8- 030831 291 1.2+ 0.1- 160116 G40 0.4+ 0.1+ 160401 H45 0.1+ 0.7- 030831 291 1.4+ 0.2- 160125 215 1.3- 0.6- 160401 H45 0.0 0.4- 030831 291 1.3+ 1.2- 160125 215 1.6- 1.1- 160401 H45 0.3- 0.7- 030921 291 0.2- 0.4- 160125 215 (2.2- 1.0-) 160401 H45 0.0 0.7- 030921 291 0.1- 0.2- 160127 G40 0.2- 0.8- 160403 I81 1.4+ 0.6+ 030921 291 0.5+ 0.5- 160127 G40 0.4+ 0.1+ 160403 I81 1.2+ 0.7+ 030928 291 0.1+ 0.2- 160127 G40 0.0 0.1- 160403 I81 1.8+ 0.0 030928 291 0.4- 0.1- 160127 G40 1.2- 0.2- 160405 H45 0.4+ 0.7- 030928 291 0.1- 0.9- 160206 H06 0.6+ 0.6- 160405 H45 0.2+ 0.2- 031117 360 0.3- 0.4- 160206 H06 0.3- 0.5- 160405 H45 0.6+ 0.2- 031117 360 0.1+ 0.5+ 160210 G40 0.5+ 0.7- 160405 H45 0.2+ 0.5- 031117 360 0.9- 0.1- 160210 G40 0.2+ 1.3- 160405 H45 0.7+ 0.4- 031123 360 1.5- 0.9+ 160210 G40 0.4+ 0.0 160405 H45 0.8+ 0.3- 031123 360 (2.3- 0.3-) 160211 A71 1.7- 1.3- 160405 367 0.0 0.1- 031123 360 0.5- 0.3+ 160211 A71 1.3- 1.3- 160405 367 0.2+ 0.3- 031208 204 0.4+ 1.4+ 160224 A71 (0.0 2.5-) 160405 367 0.1- 0.0 031208 204 1.0- 0.4+ 160224 A71 (0.9- 2.6-) 160409 A77 0.1+ 1.1+ 031214 360 0.1+ 0.1+ 160227 A71 0.0 1.4- 160409 A77 0.2+ 1.8+ 031214 360 0.2- 0.4+ 160227 A71 0.4- 1.9- 160409 A77 0.5+ 0.9+ 031214 360 1.7- 0.8+ 160301 900 0.2- 1.7- 160410 W96 0.4+ 0.6- 2004/ 160301 900 0.5+ 1.1- 160410 W96 1.6+ 0.4- 040105 204 0.1- 1.6+ 160302 367 0.8- 1.5- 160410 W96 0.7+ 1.5+ 040218 A33 0.7- 0.4+ 160302 367 (0.1+ 2.4-) 160411 A77 (1.1- 2.0+) 040220 A33 1.2+ 1.6+ 160314 G40 (1.0- 2.2-) 160411 A77 (2.3+ 2.2+) 2005/ 160314 G40 0.5- 1.9- 160411 A77 (2.6+ 2.0+) 050211 568(32.9+ 11.1+) 160314 G40 0.8- 1.4- 160412 A77 (1.7+ 2.2+) 050211 568(33.0+ 11.3+) 160319 349 1.9- 0.4- 160412 A77 1.7+ 1.5+ 050211 568(32.8+ 11.0+) 160319 349 1.5- 0.0 160414 A77 0.8+ 0.4+ 2016/ 160321 349 1.5- 0.1- 160414 A77 0.8+ 0.1- 160103 G40 (3.8- 0.5-) 160321 349 1.7- 0.3- 160414 A77 0.7+ 0.2- 160103 G40 (3.8- 0.0 ) 160325 H06 0.7- 1.1- 160419 C10 0.9+ 0.9+ 160103 G40 (4.5- 0.7-) 160325 H06 0.4- 0.8- 160419 C10 0.5+ 0.8- 160104 G40 0.2- 1.2+ 160325 H06 1.0- 1.2- 160421 H06 0.8+ 0.1- 160104 G40 0.2+ 1.0+ 160325 H06 1.1- 1.0- 160421 H06 0.1- 0.9+ 160104 G40 1.2+ 1.7+ 160328 A77 0.4- 1.1- 160422 G40 0.1+ 0.1+ 160107 G40 0.4- 1.1+ 160328 A77 0.5+ 0.6- 160422 G40 0.2+ 0.5+ 160107 G40 0.3+ 1.2+ 160328 A77 0.0 0.4- 160422 G40 0.5+ 0.1+ 160107 G40 1.1+ 0.7+ 160328 G40 0.6- 1.2- 160427 A71 0.1+ 0.2- 160110 G40 0.2- 0.9+ 160328 G40 0.3- 1.1- 160427 A71 0.4+ 0.1+ 160110 G40 0.7+ 1.1+ 160328 G40 0.5- 1.0- 160515 G40 1.0- 1.4+ 160110 G40 0.6+ 1.5+ 160328 G40 0.2- 0.7- 160515 G40 1.3- 1.3+ 160110 G40 0.2- 1.1+ 160330 I81 1.0+ 0.1- 160516 G40 0.9- 1.6+ 160110 G40 0.0 1.0+ 160330 I81 1.1+ 0.0 160516 G40 1.5- 1.9+ 160116 G40 0.3+ 0.3- 160330 I81 1.0+ 0.2- 160611 W88 (6.5- 4.4+) 160116 G40 0.1- 1.1+ 160401 H45 0.2- 0.1- 160611 W88 (5.8- 3.9+) ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2016 July 1