Nakano Note (Nakano wa Kangaeru noda) NK 3836 P/2016 A3 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 140 observations 2016 Jan. 4 to 2019 May 25. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.50 arc second. The comet will pass 0.80 AU from Jupiter on 2038 Mar. 27 UT. See the previous orbits in NK 3330, NK 3350, NK 3505 and NK 3582 (= HICQ 2019). Epoch = 2017 Mar. 28.0 TT T = 2017 Apr. 13.59657 +/- 0.00062 (m.e.) TT Peri. = 338.47200 +/- 0.00008 Node = 187.79447 +/- 0.00006 (2000.0) Inc. = 8.59397 +/- 0.00001 q = 4.7894898 +/- 0.0000016 AU e = 0.3797919 +/- 0.0000022 a = 7.7223912 +/- 0.0000269 AU n' = 0.04592788 +/- 0.00000024 P = 21.460 +/- 0.0001118 years (+/- 0.04 day) The predicted orbit for the 2039 return is as follows: T = 2039 June 19.89325 TT Epoch = 2039 June 21.0 TT Peri. = 351.11660 e = 0.3686943 Node = 179.44384 (2000.0) a = 7.5535260 AU Inc. = 9.11158 n'= 0.04747659 q = 4.7685840 AU P = 20.760 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2016/ 170126 F51 0.1+ 0.1- 170330 F51 0.0 0.1+ 160104 F51 0.1- 0.0 170126 F51 0.3+ 0.1- 170330 F51 0.5+ 0.4- 160104 F51 0.0 0.0 170126 F51 0.1+ 0.1- 170330 F51 0.2- 0.5+ 160104 F51 0.0 0.0 170221 J22 0.3+ 0.4+ 170331 A71 0.3- 0.5+ 160104 F51 0.1- 0.0 170221 J22 0.3+ 0.9+ 170331 A71 0.2- 0.6+ 160105 568 0.1+ 0.1- 170221 J22 1.3- 0.2+ 170401 J43 0.4+ 0.1- 160105 568 0.1+ 0.1- 170222 G45 0.7- 0.3+ 170401 J43 0.1+ 0.0 160105 568 0.1+ 0.1- 170222 G45 0.8- 0.4+ 170401 J43 0.5+ 0.1+ 160106 H21 0.2- 0.1- 170222 G45 0.4- 0.4+ 170401 J43 0.0 0.2+ 160106 H21 0.2- 0.2- 170222 G45 0.2- 0.2+ 170401 J43 0.0 0.0 160106 H21 0.2- 0.2- 170222 H15 (2.0- 0.7+) 170401 J43 0.0 0.1- 160106 O75 0.7- 0.9+ 170222 H15 0.9- 0.1+ 170401 J43 0.1+ 0.1+ 160106 O75 0.5- 1.1+ 170222 H15 (2.1- 1.0+) 170401 J43 0.3+ 0.1- 160106 O75 1.1- 0.1- 170224 703 1.4- 1.0+ 170519 T05 0.5+ 0.1+ 160107 F51 0.0 0.2- 170224 703 0.9- 0.3+ 170519 T05 0.5+ 0.0 160107 F51 0.0 0.2- 170224 703 1.3- 0.5+ 170519 T05 0.7- 0.6- 160107 F51 0.0 0.1+ 170224 703 0.4- 0.7+ 170519 T05 (1.0+ 2.1-) 160107 F51 0.1- 0.1- 170224 G45 0.6- 0.3+ 170528 703 0.3- 0.3+ 160107 Q62 0.2- 0.1- 170224 G45 0.6- 0.3+ 170528 703 0.6- 0.5+ 160107 Q62 0.2- 0.1+ 170224 G45 0.3- 0.4+ 170528 703 0.1+ 0.3+ 160107 Q62 0.2+ 0.2- 170224 G45 0.1- 0.4+ 2018/ 160110 E07 0.1- 0.1- 170224 G45 0.5- 0.1+ 180407 215 (2.3- 0.9-) 160110 E07 0.4- 0.1- 170224 T05 0.7- 1.3+ 180407 215 (2.0- 0.2-) 160112 F51 0.0 0.2- 170224 T05 1.1- 0.4+ 180407 215 0.7- 0.2+ 160112 F51 0.1+ 0.1- 170224 T05 (2.5- 0.6+) 180412 F52 0.0 0.4- 160112 F51 0.1+ 0.1- 170224 T05 (2.2- 0.5-) 180412 F52 0.2+ 0.1- 160113 G45 0.5- 0.1+ 170301 J22 0.4+ 0.3+ 180412 F52 0.0 0.3- 160113 G45 0.5- 0.1+ 170301 J22 0.1+ 1.1+ 180418 703 0.1+ 0.7- 160113 G45 0.0 0.7+ 170301 J22 0.4+ 1.2+ 180418 703 (2.2- 0.7+) 160113 G45 0.2+ 0.1+ 170320 J22 0.0 0.3+ 180418 703 (3.3- 0.3+) 160129 703 (2.4+ 0.0 ) 170320 J22 0.8+ 0.3+ 180418 703 (5.2- 0.5+) 160129 703 1.2+ 0.4- 170320 J22 0.1- 0.2- 180423 G96 0.2+ 0.4- 160129 703 (4.0- 0.6+) 170320 691 (3.0- 1.1+) 180423 G96 0.5- 0.0 160204 J22 0.7- 0.2+ 170320 691 (2.6- 0.9+) 180423 G96 1.0- 0.3+ 160204 J22 1.3- 0.5+ 170320 691 1.6- 0.9+ 180423 G96 0.9- 0.1- 160204 J22 1.4- 0.0 170322 F51 0.4+ 0.3+ 180509 Q62 0.6- 0.3- 160212 F51 0.0 0.1- 170322 F51 0.1+ 0.0 180509 Q62 0.5- 0.2- 160212 F51 0.0 0.1- 170322 F51 0.1+ 0.0 180509 Q62 0.3- 0.1- 160212 F51 0.0 0.1- 170322 F51 0.2+ 0.1+ 180512 D29 0.8+ 1.1+ 160212 F51 0.0 0.1- 170325 D29 0.2+ 0.5- 180512 D29 0.2- 0.7+ 160228 W55 0.4+ 0.2- 170325 D29 0.6+ 0.5+ 180512 D29 0.1+ 0.2- 160228 W55 0.0 0.6- 170325 D29 0.3- 0.1+ 180519 F51 0.0 0.2- 160310 215 0.1+ 0.2+ 170326 A71 0.2- 0.0 180519 F51 0.1- 0.1- 160310 215 0.1+ 0.2+ 170326 A71 0.2- 0.7+ 180519 F51 0.1+ 0.3- 160310 215 0.3+ 0.4+ 170326 A71 0.9+ 0.1- 180519 F51 0.3- 0.0 161204 G96 1.6- 0.4+ 170326 215 (2.0- 0.2-) 2019/ 161204 G96 1.8- 0.9+ 170326 215 1.6- 0.8+ 190503 G96 0.1- 0.2+ 161204 G96 1.6- 0.6+ 170326 215 1.6- 1.6+ 190503 G96 0.8- 0.2- 161213 F51 0.0 0.1+ 170329 J43 0.1- 0.5+ 190503 G96 0.2- 0.1- 161213 F51 0.1+ 0.1- 170329 J43 0.2- 0.3+ 190503 G96 0.9- 0.2- 161213 F51 0.0 0.2- 170329 J43 0.3- 0.2+ 190525 F52 0.3+ 0.1- 2017/ 170329 J43 0.1+ 0.0 190525 F52 0.3+ 0.0 170126 F51 0.2+ 0.1- 170330 F51 0.5+ 0.1- 190525 F52 0.3- 0.1+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2019 June 10