Nakano Note (Nakano wa Kangaeru noda) NK 3516 C/2017 E1 (Borisov)
The following improved orbital elements, by S. Nakano, are from 173 observations 2017 Mar. 1 to June 25. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.69 arc second. The comet has passed 0.48 AU from Jupiter on 2016 Feb. 3 UT. Epoch = 2017 Mar. 28.0 TT T = 2017 Apr. 10.13871 +/- 0.00015 (m.e.) TT Peri. = 152.47333 +/- 0.00037 Node = 142.73328 +/- 0.00033 (2000.0) Inc. = 14.55414 +/- 0.00004 q = 0.9006647 +/- 0.0000033 AU e = 1.0025873 +/- 0.0000209 1/a = -0.0028727 +/- 0.0000232 1/AU origin = +0.000883 (Q= 6) future = -0.003120 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 170304 D95 1.4+ 0.4- 170319 D95 0.4- 0.1+ 170301 L51 (2.4- 1.5+) 170304 349 0.0 0.3- 170319 D95 0.2+ 0.2- 170301 L51 1.7- 1.4- 170304 Q11 0.0 0.1+ 170319 D95 0.2+ 1.3+ 170301 L51 0.9+ 1.1- 170304 349 0.3+ 0.7- 170321 Y00 0.9- 0.6- 170301 H06 1.1- 1.2- 170304 Q11 0.2- 0.2+ 170321 Y00 1.2- 0.3- 170301 H06 0.7+ 1.9- 170304 Q11 0.4- 0.2+ 170321 Y00 1.7- 0.0 170301 H06 0.1- 0.3- 170304 367 0.3- 0.4+ 170321 Y00 1.9- 1.2- 170301 H06 1.2- 0.4- 170304 367 0.1- 0.3+ 170321 Y00 1.9- 1.1- 170301 H06 0.3+ 1.2- 170304 367 0.3+ 0.2+ 170321 Y00 1.8- 0.5- 170301 H06 0.9+ 1.4- 170304 367 0.4- 0.6+ 170322 W88 0.4+ 0.3- 170301 H06 0.8+ 0.8- 170305 A77 1.0+ 0.6+ 170322 W88 0.5+ 0.4- 170301 291 0.0 0.3+ 170305 A77 0.8+ 1.6+ 170323 Y00 0.8- 0.9+ 170301 H06 0.3+ 1.2- 170305 A77 (0.6+ 2.6+) 170323 Y00 1.4- 0.3+ 170301 291 0.1+ 0.1+ 170305 W88 0.7+ 0.3+ 170323 Y00 0.6- 0.1+ 170301 H06 0.5+ 1.3- 170305 W88 0.9+ 0.2- 170323 I47 1.7+ 0.2+ 170301 291 0.6+ 0.3+ 170305 W88 0.1+ 0.3- 170323 I47 (2.2+ 0.4+) 170302 G40 0.0 0.3+ 170305 W88 0.4+ 0.2- 170323 I47 1.8+ 0.7+ 170302 G40 0.6- 0.4- 170305 W88 0.7+ 0.5- 170324 695 0.6+ 0.3- 170302 I47 0.9- 0.2- 170305 H06 0.3- 0.1+ 170324 695 0.4+ 0.8- 170302 I47 0.0 0.0 170305 H06 0.2- 0.4+ 170324 695 0.0 0.0 170302 I47 1.4- 0.1- 170305 H06 0.3+ 0.6+ 170325 695 0.5+ 0.1+ 170302 850 (3.3- 0.2+) 170306 Q62 0.4+ 0.4- 170325 695 1.1+ 0.0 170302 850 0.4- 0.0 170306 Q62 0.4+ 0.1- 170325 695 0.5+ 0.2- 170302 850 0.4+ 0.4- 170306 Q62 0.4+ 0.3+ 170325 695 1.0+ 0.1+ 170302 850 1.1- 0.7+ 170307 Q62 0.4+ 0.4- 170326 695 0.8+ 0.4+ 170302 850 (2.2- 1.6-) 170307 Q62 0.1+ 0.3- 170326 695 0.3+ 0.4- 170302 H06 0.6+ 0.3+ 170307 Q62 0.6+ 0.4+ 170326 695 1.0+ 0.2+ 170302 H06 0.9+ 1.0+ 170307 Q62 0.2- 0.2- 170326 695 0.3+ 0.2+ 170302 H06 0.9- 1.7+ 170307 Q62 0.3- 0.0 170326 695 0.4+ 0.5- 170302 H36 0.0 0.3+ 170307 Q62 0.2- 0.0 170326 695 0.5+ 0.2- 170302 H06 0.2- 0.1+ 170307 Q62 0.1+ 0.3- 170326 695 0.7+ 0.2+ 170302 H06 (2.3- 0.7+) 170307 Q62 0.3+ 0.0 170327 A71 1.7- 0.3+ 170302 H36 0.7- 0.4- 170307 Q62 0.5- 0.2- 170327 A71 (2.8- 0.4-) 170302 H36 0.0 0.7- 170307 Q62 0.1+ 0.1- 170327 A71 (2.4- 1.3+) 170302 H06 0.1+ 0.1- 170308 W96 0.2+ 0.3- 170327 349 0.6+ 0.3- 170302 H06 0.3- 0.7+ 170308 W96 0.2+ 0.1- 170327 349 0.1- 0.1- 170302 349 1.4- 0.3+ 170308 W96 0.4+ 0.0 170327 349 0.4+ 0.9- 170302 349 1.9- 0.9+ 170308 850 (5.6+ 3.2-) 170401 367 1.2- 0.5- 170303 Y00 0.4+ 1.1+ 170308 850 (2.0+ 2.8-) 170401 367 0.0 0.3- 170303 Y00 1.0- 0.9+ 170309 J22 0.9+ 0.7+ 170404 D95 0.2- 1.0+ 170303 Y00 0.4+ 0.3+ 170309 J22 0.4- 1.3- 170404 D95 0.3- 0.9+ 170303 850 0.4- 0.4+ 170309 J22 (1.2- 3.3-) 170404 D95 0.9+ 0.5+ 170303 850 0.2+ 1.0- 170309 850 0.7+ 0.6+ 170404 349 0.6- 1.0+ 170303 850 0.6+ 1.0- 170309 850 0.3- 0.3+ 170404 349 0.7- 0.8+ 170303 850 1.4+ 0.1- 170311 215 0.4- 0.0 170405 349 1.0- 0.5- 170303 Q11 0.2- 0.0 170311 215 0.1+ 0.6- 170405 349 0.7- 0.1+ 170303 349 0.4- 0.2- 170311 215 1.5- 0.6- 170407 W97 0.2- 0.5- 170303 349 0.3+ 0.5+ 170311 349 0.4+ 1.0+ 170407 W97 0.4+ 0.2- 170303 Q11 0.1+ 0.0 170311 349 0.7+ 1.4+ 170407 W97 (0.1- 2.3-) 170304 585 0.1- 0.0 170313 G40 0.2+ 0.2- 170409 D95 1.0+ 0.2- 170304 585 0.1- 0.4- 170313 G40 0.0 0.4+ 170409 D95 1.3+ 0.1+ 170304 585 0.1+ 0.4- 170313 G40 1.2+ 0.1+ 170409 D95 1.5- 0.1+ 170304 585 0.5+ 0.0 170313 Y00 (2.0- 0.3-) 170413 349 0.5- 1.3+ 170304 I47 0.5- 0.3+ 170313 Y00 1.6- 0.2+ 170413 349 1.2- 0.8+ 170304 I47 0.4+ 0.8- 170313 Y00 0.5- 0.1+ 170429 Q62 1.0+ 0.7- 170304 I47 0.2+ 0.0 170316 367 0.6+ 0.6+ 170429 Q62 0.4+ 0.9- 170304 850 1.3- 0.8- 170316 367 0.4+ 0.7+ 170429 Q62 0.7+ 0.4- 170304 850 0.2- 0.2+ 170316 367 0.3+ 0.5+ 170526 Q62 0.0 1.1- 170304 850 0.3+ 0.2+ 170318 I47 1.3+ 0.2- 170526 Q62 0.1- 0.6- 170304 D95 0.7+ 1.3+ 170318 I47 1.1+ 0.2+ 170625 Q62 0.2+ 0.4+ 170304 D95 0.9+ 0.6+ 170318 I47 0.3+ 0.2+ 170625 Q62 0.0 0.4- 170304 372 0.7- 0.3+ 170318 349 1.1- 0.1+ 170304 372 0.5- 0.0 170318 349 0.5- 0.9+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2017 Nov. 30