Nakano Note (Nakano wa Kangaeru noda) NK 3609 C/2018 F1 (Grauer)
The following improved orbital elements, by S. Nakano, are from 139 observations 2017 Dec. 22 to 2018 May 18. 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 has passed 3.40 AU from Jupiter on 2018 May 15 UT. See the previous orbit in NK 3578. Epoch = 2018 Dec. 28.0 TT T = 2018 Dec. 14.07797 +/- 0.00085 (m.e.) TT Peri. = 71.62245 +/- 0.00054 Node = 177.29022 +/- 0.00008 (2000.0) Inc. = 46.07110 +/- 0.00027 q = 2.9930977 +/- 0.0000235 AU e = 0.9907012 +/- 0.0000216 1/a = +0.0031067 +/- 0.0000072 1/AU origin = +0.004616 (Q= 7) future = +0.004625 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 180319 W96 0.2- 0.2+ 180412 G96 0.4- 0.5+ 171222 F51 0.0 0.1+ 180319 W96 0.1+ 0.1+ 180412 F51 0.1+ 0.3+ 171222 F51 0.1+ 0.1- 180319 W96 0.2+ 0.0 180412 F51 0.2+ 0.3+ 171222 F51 0.1+ 0.2- 180319 I52 0.7+ 0.7- 180412 F51 0.2+ 0.2+ 171222 F51 0.1+ 0.1+ 180319 I52 0.2+ 0.1- 180412 F51 0.1+ 0.3+ 2018/ 180319 I52 0.1+ 0.3- 180413 T08 (1.5- 2.3-) 180117 F51 0.0 0.1- 180319 I52 0.0 0.1+ 180413 T08 (1.3- 2.1-) 180117 F51 0.3- 0.3+ 180319 F51 0.2+ 0.1+ 180413 T08 0.9- 0.2+ 180223 G96 0.3- 0.1+ 180319 F51 0.3+ 0.1+ 180413 T08 1.6- 0.5- 180223 G96 0.4- 0.1+ 180319 F51 0.3+ 0.1+ 180416 703 0.4- 1.2- 180223 G96 0.3- 0.3- 180319 F51 0.2+ 0.1+ 180416 703 0.6- 1.1- 180223 G96 0.4- 0.1+ 180320 703 0.7- 0.0 180416 703 0.6- 0.4- 180310 F51 0.1+ 0.0 180320 703 1.6- 0.0 180416 703 0.2+ 0.1- 180310 F51 0.1+ 0.1- 180320 703 1.0- 0.5- 180419 A71 0.2+ 0.3+ 180310 F51 0.2+ 0.0 180320 703 1.5- 0.6- 180419 A71 0.3+ 0.3+ 180317 G96 0.2- 0.1- 180320 A71 0.2- 0.7+ 180419 A71 0.0 0.2+ 180317 G96 0.2- 0.1- 180320 A71 0.7+ 0.8+ 180420 703 0.8- 0.6- 180317 G96 0.4- 0.2- 180320 A71 0.0 0.7+ 180420 703 0.4- 0.2+ 180317 G96 0.4- 0.6+ 180322 703 0.5- 1.1- 180420 703 0.6- 0.5- 180317 F51 0.2+ 0.0 180322 703 0.3+ 0.7- 180420 703 0.4- 0.5- 180317 F51 0.2+ 0.0 180322 703 0.4+ 0.3- 180420 V06 0.1+ 0.2- 180317 I52 0.1+ 0.0 180322 703 0.2- 0.5+ 180420 V06 0.1- 0.0 180317 I52 0.2- 0.1+ 180322 Q11 0.4- 0.1+ 180420 V06 0.1- 0.2- 180317 I52 0.3- 0.0 180322 Q11 0.5- 0.0 180420 V06 0.1+ 0.2- 180317 I52 0.0 0.1+ 180322 Q11 0.2- 0.1+ 180420 A71 0.1- 0.8+ 180317 F51 0.2+ 0.0 180323 Q11 0.4- 0.0 180420 A71 0.4+ 0.2+ 180317 F51 0.3+ 0.0 180323 Q11 0.5- 0.1+ 180420 A71 0.2+ 0.8+ 180317 I52 0.1+ 0.0 180323 Q11 0.2- 0.0 180423 703 1.7- 0.5- 180317 I52 0.2+ 0.4- 180406 215 0.2- 0.2+ 180423 703 0.5- 0.7- 180317 I52 0.6- 0.2- 180406 215 0.3- 0.4+ 180423 703 0.4+ 0.4+ 180317 I52 0.4- 0.0 180406 215 0.3- 0.5+ 180423 703 0.6- 1.1- 180317 B49 1.2- 0.5- 180407 K77 0.2+ 1.4- 180501 B74 0.2- 0.1- 180317 B49 1.2- 0.6- 180407 K77 0.2+ 0.6- 180501 B74 0.2+ 0.3- 180317 B49 1.1- 0.8- 180407 J22 0.7+ 1.1+ 180501 B74 0.1- 0.7- 180318 850 0.9- 1.0- 180407 J22 0.3- 0.2- 180505 C23 0.2+ 0.1- 180318 850 0.1- 0.3- 180407 J22 0.1- 0.1- 180505 C23 0.3+ 0.5+ 180318 850 0.1- 0.7+ 180407 349 0.4+ 0.5+ 180506 J22 0.7+ 0.2- 180318 850 0.6+ 0.2- 180407 349 0.9+ 0.0 180506 J22 0.0 0.5- 180318 I52 0.5- 0.1+ 180408 D81 0.3- 0.5- 180506 J22 0.3+ 0.2+ 180318 I52 0.6- 0.7- 180408 D81 1.2- 0.7- 180509 G96 0.1+ 0.0 180318 I52 0.6- 0.1+ 180408 D81 1.8- 0.9- 180509 G96 0.2+ 0.0 180318 I52 0.4- 0.4+ 180410 703 1.6- 0.9- 180509 G96 0.2+ 0.0 180318 G96 0.3- 0.0 180410 703 0.9- 0.1- 180509 G96 0.3+ 0.0 180318 G96 0.2- 0.1+ 180410 703 0.0 0.9- 180510 C23 0.9+ 0.1- 180318 G96 0.3- 0.1+ 180410 703 0.7- 0.4- 180510 C23 0.4+ 0.8- 180318 G96 0.3- 0.3- 180412 G96 0.0 0.0 180518 C23 0.0 0.5+ 180319 G40 0.2- 0.4- 180412 G96 0.5- 0.5- 180518 C23 0.8+ 0.9+ 180319 G40 0.4- 0.0 180412 G96 0.1- 0.2- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2018 June 12