Nakano Note (Nakano wa Kangaeru noda) NK 3754 C/2017 K1 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 93 observations 2017 May 21 to 2018 June 18. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.43 arc second. The comet has passed 3.07 AU from Saturn on 2016 Sept. 24 and 1.86 AU from Jupiter on 2018 Feb. 27 UT. See the previous orbits in HICQ 2018 and NK 3574. Epoch = 2018 Mar. 23.0 TT T = 2018 Mar. 14.22380 +/- 0.00932 (m.e.) TT Peri. = 4.16399 +/- 0.00065 Node = 225.64226 +/- 0.00001 (2000.0) Inc. = 154.00945 +/- 0.00003 q = 7.2856123 +/- 0.0000162 AU e = 1.0024551 +/- 0.0000112 1/a = -0.0003370 +/- 0.0000015 1/AU origin = +0.000041 (Q= 8) future = +0.000064 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 170715 F51 0.1+ 0.0 180421 309 0.0 0.1+ 170521 F51 0.1- 0.1+ 170715 F51 0.0 0.1+ 180421 309 0.0 0.1+ 170521 F51 0.1- 0.0 2018/ 180421 703 0.1- 1.2+ 170521 F51 0.0 0.2+ 180327 703 1.0+ 0.6+ 180421 703 0.4+ 0.3- 170521 F51 0.1- 0.1+ 180327 703 0.1+ 1.1- 180421 703 0.5- 0.4- 170522 691 0.2+ 0.1- 180327 703 (2.1- 1.4-) 180421 215 0.3+ 0.2+ 170522 691 0.1- 0.5- 180327 703 1.0- 1.4- 180421 215 0.4- 0.1+ 170522 691 0.0 0.4+ 180411 703 0.6- 1.8- 180421 215 1.1- 0.2+ 170522 Q62 0.2- 0.4- 180411 703 1.1+ 0.9- 180506 461 0.2- 0.2- 170522 Q62 0.0 0.0 180411 703 1.0+ 0.8- 180506 461 1.1- 0.4- 170522 Q62 0.3- 0.1+ 180411 703 0.1+ 0.8- 180508 461 0.4+ 0.0 170523 691 0.3- 0.3- 180412 F51 0.0 0.3+ 180508 461 0.3+ 0.4- 170523 691 0.2- 0.6- 180412 F51 0.1- 0.2+ 180508 461 0.2+ 0.0 170523 691 0.9+ 0.5- 180412 F51 0.2+ 0.3+ 180509 Q62 0.3- 0.9- 170523 568 0.0 0.0 180412 F51 0.2+ 0.1+ 180509 Q62 0.1- 0.7- 170523 568 0.0 0.0 180414 703 (1.5- 2.7-) 180509 Q62 0.2+ 0.5- 170523 568 0.0 0.0 180414 703 0.3+ 1.4- 180516 703 (0.1+ 2.3-) 170523 568 0.1- 0.0 180414 703 0.7- 1.1- 180516 703 0.6- 0.4+ 170612 Q62 1.4+ 0.4- 180416 G96 0.2+ 0.5- 180516 703 0.4+ 0.5+ 170612 Q62 1.5+ 0.6- 180416 G96 0.1- 0.6- 180606 703 1.0- 0.1+ 170619 Q62 0.4+ 0.5+ 180416 G96 0.4+ 0.5- 180606 703 0.2- 0.3- 170619 Q62 0.5+ 0.3+ 180416 G96 0.1+ 0.6- 180606 703 0.1+ 0.7- 170619 Q62 0.5+ 0.5+ 180416 D95 0.6+ 0.9- 180606 703 0.5+ 0.2+ 170619 215 0.3+ 1.2- 180416 D95 0.7- 1.0- 180611 703 (0.8+ 2.1-) 170619 215 0.6- 0.6- 180418 A71 0.7- 0.5+ 180611 703 0.9- 0.1+ 170619 215 0.6- 1.7- 180419 A71 0.4+ 0.1+ 180611 703 0.6+ 0.2- 170621 Q62 0.2+ 0.7- 180419 A71 0.3- 0.6+ 180611 703 0.3- 0.4- 170621 Q62 0.4+ 0.6- 180421 309 0.0 0.1+ 180618 G96 0.1- 0.2- 170621 Q62 0.6+ 0.9- 180421 309 0.0 0.1+ 180618 G96 0.1+ 0.1- 170626 F51 0.1+ 0.1- 180421 309 0.1- 0.2+ 180618 G96 0.1+ 0.3- 170626 F51 0.0 0.2+ 180421 309 0.0 0.0 180618 G96 0.2+ 0.5- 170715 F51 0.2- 0.1- 180421 309 0.0 0.1+ 180618 G40 0.4+ 1.3- 170715 F51 0.1- 0.1+ 180421 309 0.1+ 0.1+ 180618 G40 0.5- 1.0- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2018 Dec. 7