Nakano Note (Nakano wa Kangaeru noda) NK 3585 C/2016 X1 (Lemmon)
The following improved orbital elements, by S. Nakano, are from 101 observations 2016 Nov. 26 to 2018 Apr. 18. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.56 arc second. Residuals on 2018 May observations show about 3" from an orbit in NK 3466 (= HICQ 2018). Epoch = 2019 Apr. 27.0 TT T = 2019 Apr. 29.75549 +/- 0.02747 (m.e.) TT Peri. = 224.55934 +/- 0.00267 Node = 256.42668 +/- 0.00003 (2000.0) Inc. = 26.45577 +/- 0.00009 q = 7.5641603 +/- 0.0001632 AU e = 0.9956512 +/- 0.0000390 1/a = +0.0005749 +/- 0.0000052 1/AU origin = +0.000294 (Q= 8) future = +0.000488 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2016/ 161230 J22 1.7+ 0.9+ 180206 585 0.3- 0.4+ 161126 F51 0.2- 0.1+ 161230 J22 1.8+ 1.3+ 180206 585 0.2- 0.7- 161126 F51 0.1- 0.0 161231 A77 0.4+ 0.4+ 180206 585 0.0 0.5- 161126 F51 0.2- 0.2- 2017/ 180206 585 0.2+ 0.6- 161208 G96 0.3+ 0.8+ 170101 A77 0.8- 1.1+ 180206 585 0.6+ 0.2- 161208 G96 0.1+ 0.2- 170119 461 1.3- 0.0 180206 585 0.1+ 0.7- 161208 G96 0.5+ 0.3+ 170119 461 0.9- 0.4+ 180206 585 0.4- 0.5- 161208 G96 0.2- 0.3- 170120 461 0.5- 0.2+ 180206 585 0.7- 0.1+ 161208 I52 0.2+ 0.2+ 170120 461 0.2- 0.8+ 180206 585 0.3+ 0.3- 161208 I52 0.4+ 0.3+ 170126 461 0.0 0.2+ 180206 585 0.3+ 0.6- 161208 I52 0.2+ 0.1+ 170126 461 0.3- 0.6- 180206 585 0.5- 0.8- 161208 I52 0.6+ 0.1+ 170128 215 (0.2+ 4.3-) 180206 585 0.4+ 0.1+ 161209 H36 0.9- 1.4- 170128 215 (0.4+ 4.7-) 180213 J22 0.4+ 0.0 161209 H36 0.9+ 0.7- 170128 215 (1.1+ 4.4-) 180213 J22 0.2+ 0.1- 161209 H36 0.3- 0.7- 170216 461 0.4- 0.2- 180213 J22 0.1+ 0.2- 161209 I52 0.9- 1.7- 170216 461 0.1+ 0.4+ 180310 H06 0.8+ 0.0 161209 I52 0.1+ 0.1+ 171002 461 0.0 0.1+ 180310 H06 1.4+ 0.5- 161209 I52 0.2+ 0.1+ 171002 461 0.0 0.3+ 180310 J22 0.4- 0.1+ 161210 I52 0.1+ 0.6+ 171002 461 0.0 0.2+ 180310 J22 0.1- 0.2+ 161210 I52 0.0 0.0 171015 461 0.1+ 0.1+ 180310 J22 0.1+ 0.2+ 161210 I52 0.3+ 0.1+ 171015 461 0.1+ 0.3+ 180311 Q11 0.0 0.7- 161210 I52 0.4+ 0.5+ 171016 461 0.0 0.1+ 180311 Q11 0.1- 0.9- 161220 U69 1.7+ 0.9- 171016 461 0.0 0.1+ 180312 Q11 0.5+ 0.3- 161220 U69 1.6+ 1.1- 171120 130 0.1+ 0.5- 180312 Q11 0.4+ 0.4- 161220 K88 0.1+ 0.5+ 171120 130 0.2- 0.4- 180312 Q11 0.3+ 0.4- 161220 K88 0.0 0.4+ 171123 U69 0.2+ 0.2+ 180312 D95 0.2- 0.7+ 161220 K88 0.3- 0.4+ 171123 U69 0.2+ 0.1- 180312 D95 0.4- 0.6+ 161221 H01 0.2+ 0.1- 171123 U69 0.1+ 0.4- 180406 215 0.2- 1.6+ 161221 H01 0.1+ 0.1- 171219 461 0.4+ 0.1+ 180406 215 0.4- 1.8+ 161221 H01 0.1+ 0.1- 171219 461 0.2- 0.0 180406 215 0.4- 1.7+ 161222 215 0.5- 0.4+ 171219 461 0.3- 0.2+ 180413 Q11 0.4- 0.4- 161222 215 1.7- 0.3- 2018/ 180413 Q11 0.2- 0.7- 161225 349 0.2- 1.7- 180119 461 0.3- 0.1+ 180415 Q11 0.1- 0.0 161225 349 (0.5+ 2.4-) 180119 461 0.2+ 0.5+ 180415 Q11 0.1- 0.2+ 161229 K77 1.0+ 0.7+ 180206 585 0.7- 0.1+ 180418 Q11 0.0 0.2+ 161229 K77 1.0+ 0.9+ 180206 585 0.6- 0.3+ 180418 Q11 0.0 0.1+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2018 May 17