Nakano Note (Nakano wa Kangaeru noda) NK 3591 C/2017 S3 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 93 observations 2017 Aug. 17 to 2018 May 14. 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 0.76 AU from Earth on 2018 Aug. 6.8 UT. See the previous orbits in HICQ 2018, NK 3525 and NK 3543. Epoch = 2018 Aug. 30.0 TT T = 2018 Aug. 15.94530 +/- 0.00096 (m.e.) TT Peri. = 255.88999 +/- 0.00029 Node = 171.04071 +/- 0.00034 (2000.0) Inc. = 99.03826 +/- 0.00006 q = 0.2084540 +/- 0.0000041 AU e = 1.0000879 +/- 0.0000013 1/a = -0.0004216 +/- 0.0000062 1/AU origin = +0.000005 (Q= 7) future = -0.000244 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 171011 J22 1.7- 1.2+ 180408 215 1.2+ 0.9- 170817 F51 0.2+ 0.3- 171014 215 0.4+ 0.2+ 180408 215 1.1+ 1.0- 170817 F51 0.2+ 0.1+ 171014 157 0.6- 0.1- 180408 215 0.3+ 0.3- 170817 F51 0.4+ 0.2- 171014 215 0.2+ 0.0 180412 H06 0.0 0.1- 170817 F51 0.0 0.2- 171014 215 0.1- 0.1- 180412 H06 0.2+ 0.2- 170907 F51 0.1- 0.6+ 171014 461 0.1- 0.3+ 180412 H06 0.5+ 0.2- 170907 F51 0.2- 0.1+ 171014 157 0.3+ 0.0 180416 G40 0.1+ 0.3- 170907 F51 0.1- 0.0 171014 461 0.3- 0.0 180416 G40 0.3+ 0.9- 170923 F51 0.1- 0.1+ 171014 K77 0.3+ 0.1- 180420 349 0.4- 0.5+ 170923 F51 0.1- 0.3- 171014 K77 0.2- 0.0 180420 349 0.1- 0.3+ 170923 F51 0.1+ 0.2- 171017 461 0.2+ 0.2+ 180421 A71 0.5- 0.9- 170923 F51 0.1+ 0.1- 171017 461 0.0 0.0 180421 A71 0.4+ 0.6- 170924 926 0.4- 0.5- 171017 461 0.2+ 0.0 180421 I81 0.3+ 0.4- 170924 926 0.1+ 0.1+ 171017 461 0.1- 0.1+ 180421 A71 0.3+ 0.7- 170924 926 0.3+ 0.2- 171017 461 0.3+ 0.2+ 180421 I81 0.1- 0.4+ 170924 568 0.0 0.1- 171019 U69 0.1+ 0.3+ 180421 I81 0.6- 1.2+ 170924 568 0.0 0.0 171019 U69 0.1+ 0.4+ 180421 H06 1.2+ 0.2+ 170924 568 0.2- 0.0 171019 U69 0.0 0.6+ 180421 H06 0.3+ 1.1+ 170924 568 0.0 0.1- 171118 587 0.0 0.6- 180421 H06 0.7+ 0.0 170924 568 0.1- 0.1- 171118 587 0.4+ 0.0 180421 H06 0.1- 0.5+ 170924 568 0.1- 0.2- 171118 587 0.8+ 0.4- 180421 H06 0.5- 1.9+ 170925 H06 0.7- 0.7+ 171213 587 0.1- 0.0 180422 Q11 0.0 0.1- 170925 H06 0.6- 0.5+ 171213 587 0.3- 0.2- 180422 Q11 0.1- 0.1- 170925 H06 0.3- 0.9+ 2018/ 180422 Q11 0.1- 0.1- 170926 926 0.1- 0.0 180115 H06 0.1+ 0.0 180511 D81 1.0- 0.7- 170926 926 0.7+ 0.2- 180115 H06 0.3- 0.2- 180511 D81 0.2+ 0.9+ 170926 926 0.6+ 0.5+ 180322 Q11 0.1- 0.3- 180511 D81 0.3- 0.0 170926 J01 0.2+ 1.0+ 180322 Q11 0.3- 0.4- 180511 349 0.8+ 0.3+ 170926 J01 0.1+ 0.8+ 180323 Q11 1.0- 0.9+ 180511 349 0.5+ 0.0 170926 J01 0.3- 1.1+ 180323 Q11 0.6- 0.8+ 180514 Q23 0.6- 0.5- 170927 J22 1.1- 1.5+ 180324 I81 0.2- 0.6- 180514 Q23 0.8- 0.1- 170927 J22 (3.4- 3.4+) 180324 I81 0.4+ 0.3+ 180514 Q23 0.8- 0.3- 171011 J22 (1.0- 5.4+) 180324 I81 (0.1+ 2.7+) ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2018 May 17