Nakano Note (Nakano wa Kangaeru noda) NK 5572 379P/Spacewatch
The following improved orbital elements, by S. Nakano, are from 112 observations 2006 to 2026. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.72 arc second. Residuals for 2026 observations were -23" mainly for Right Ascension from the prediction in NK 3807 with the delta-T correction = +0.014 day. The comet will pass 0.84 AU from Jupiter on 2035 Feb. 8 UT. See the previous orbits in YC 2512, NK 1779 (= NK 3215) and NK 3807. Epoch = 2026 Feb. 9.0 TT T = 2026 Feb. 22.93616 +/- 0.00136 (m.e.) TT Peri. = 31.62428 +/- 0.00041 Node = 183.50959 +/- 0.00010 (2000.0) Inc. = 12.42964 +/- 0.00003 q = 2.2646358 +/- 0.0000016 AU e = 0.3500117 +/- 0.0000006 a = 3.4841175 +/- 0.0000039 AU n' = 0.15155312 +/- 0.00000026 P = 6.503 +/- 0.0000110 years T = 2006 May 3.66752 TT Epoch = 2006 Apr. 15.0 TT Peri. = 31.40578 e = 0.3370569 Node = 184.09500 (2000.0) a = 3.5290523 AU Inc. = 12.38464 n'= 0.14866781 q = 2.3395608 AU P = 6.630 years [ T = 2012 Dec. 13.52674 TT Epoch = 2012 Dec. 19.0 TT Peri. = 31.07511 e = 0.3366287 Node = 184.06069 (2000.0) a = 3.5301506 AU Inc. = 12.37864 n'= 0.14859843 q = 2.3418008 AU P = 6.633 years ] T = 2019 Aug. 1.61396 TT Epoch = 2019 July 16.0 TT Peri. = 31.21988 e = 0.3380751 Node = 184.02846 (2000.0) a = 3.5253562 AU Inc. = 12.38602 n'= 0.14890167 q = 2.3335212 AU P = 6.619 years The predicted orbit for the 2032 return is as follows: T = 2032 Aug. 30.02208 TT Epoch = 2032 Sept. 5.0 TT Peri. = 31.98682 e = 0.3501942 Node = 183.43953 (2000.0) a = 3.4830164 AU Inc. = 12.42756 n'= 0.15162499 q = 2.2632842 AU P = 6.500 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2006/ 060519 213 (3.2+ 1.6-) 190424 215 (2.5+ 0.5-) 060326 691 0.1- 0.2+ 060519 213 1.4- 1.8- 190424 215 (2.8+ 0.6-) 060326 691 0.2+ 0.4+ 060521 215 0.2+ 1.1- 190504 Q11 1.8+ 0.4+ 060326 691 0.5+ 0.3+ 060527 130 (1.8+ 2.3-) 190504 Q11 1.6+ 0.4+ 060328 J95 (0.4- 2.1+) 060531 561 0.8+ 1.0- 190504 Q11 1.6+ 0.8+ 060328 J95 0.8- 0.2+ 060531 561 0.7+ 0.6- 190601 A71 2.0+ 0.8+ 060328 D35 0.1- 1.2+ 060531 561 0.8+ 1.5- 190601 A71 (3.3+ 0.3+) 060328 D35 0.2- 1.2+ 2019/ 190608 G40 (3.0+ 1.3-) 060328 D35 0.0 1.1+ 190228 G96 2.0- 0.2- 190608 G40 (3.3+ 1.1-) 060329 734 0.1+ 1.3+ 190228 G96 2.0- 0.1- 190731 Q62 (4.5+ 0.7-) 060329 734 0.8- 0.9- 190228 G96 1.3- 0.2+ 190731 Q62 (4.5+ 0.4-) 060329 734 (3.2- 2.9-) 190228 G96 2.0- 0.6- 2025/ 060329 474 0.5+ 0.7+ 190329 G96 0.3- 0.1- 251230 G96 1.9- 1.5+ 060329 474 0.3+ 0.4+ 190329 G96 0.6- 0.1- 251230 G96 0.2+ 0.2- 060329 474 0.7+ 0.1- 190329 G96 0.3- 0.1+ 251230 G96 0.6+ 0.1- 060330 850 1.2- 0.4+ 190329 G96 0.4- 0.2- 251230 G96 0.4+ 0.2+ 060330 850 (2.1+ 0.6+) 190403 F51 0.1- 0.0 2026/ 060330 474 0.5+ 0.1+ 190403 F51 0.1- 0.0 260213 Q14 (0.6- 3.6+) 060330 474 0.8+ 0.6- 190403 F51 0.1- 0.0 260213 Q14 (3.1- 2.6+) 060330 474 0.0 0.2+ 190403 F51 0.2- 0.0 260315 G96 1.4- 0.2- 060406 703 1.4+ 1.2+ 190403 T08 0.3- 0.1- 260315 G96 0.2- 0.1+ 060406 703 (0.7+ 2.3-) 190403 T08 0.1- 1.2- 260315 G96 0.3+ 0.1+ 060406 703 0.6- 0.0 190403 T08 1.1+ 1.9- 260315 G96 0.5+ 0.4+ 060406 703 (2.3- 0.1-) 190403 T08 0.6+ 1.9- 260320 G96 0.7+ 0.3+ 060409 673 0.6+ 0.4- 190405 G96 0.3+ 0.5- 260320 G96 0.2- 0.3+ 060409 673 0.3+ 0.2- 190405 G96 0.6+ 0.3- 260320 G96 0.0 0.4+ 060409 673 (4.1- 6.5+) 190405 G96 0.8+ 0.4- 260320 G96 0.5+ 0.3+ 060409 673 0.7+ 0.1+ 190405 G96 0.7+ 0.4- 260327 X03 0.8+ 0.3+ 060409 673 0.2+ 0.2+ 190405 Q62 0.2- 0.1+ 260327 X03 1.1+ 0.2+ 060419 703 0.4- 0.4+ 190405 Q62 0.0 0.1- 260327 X03 0.8+ 0.1+ 060419 703 1.6- 0.2+ 190405 Q62 0.0 0.0 260327 X03 0.7+ 0.5+ 060419 703 1.1- 1.2- 190405 Q11 0.2+ 0.2- 260410 W62 (3.2+ 2.0-) 060419 703 0.6- 0.2- 190405 372 0.6+ 0.1+ 260410 W62 (0.2+ 2.4+) 060423 204 0.3- 0.4- 190405 Q11 0.3+ 0.3- 260412 W62 0.0 0.0 060423 204 0.9- 0.7- 190405 Q11 0.5+ 0.1+ 260412 W62 0.1- 0.1+ 060427 703 1.2- 0.3+ 190405 372 0.0 0.1+ 260412 W62 0.2+ 0.1+ 060427 703 0.8- 0.6- 190406 Q11 0.1+ 0.1+ 260422 215 0.5- 0.3- 060427 703 1.1- 1.2- 190406 Q11 0.0 0.1+ 260422 215 0.7- 0.2- 060427 703 (0.7- 2.2-) 190406 Q11 0.1- 0.1+ 260422 215 0.3- 0.3+ 060430 213 1.1+ 0.7- 190411 G96 0.5+ 0.0 260425 F52 0.3+ 0.1- 060430 213 0.9+ 0.8- 190411 G96 0.4+ 0.4- 260425 F52 0.2+ 0.2- 060430 213 0.7+ 0.7- 190411 G96 0.4+ 0.0 260425 F52 0.3+ 0.1- 060505 G96 0.2- 1.0- 190411 G96 0.9+ 0.1+ 260425 F52 0.3+ 0.1- 060505 G96 0.1+ 1.2- 190422 K77 0.4- 0.9- 260425 F52 0.2+ 0.1- 060505 G96 0.1- 1.3- 190422 K77 1.4+ 0.7+ 260425 F52 0.0 0.1- 060505 G96 0.3- 1.3- 190424 215 (2.8+ 0.5-) ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2026 May 14