OAA computing section circular NK 3466 C/2016 X1 (Lemmon)
The following improved orbital elements, by S. Nakano, are from 53 observations 2016 Nov. 26 to 2017 Oct. 16. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.57 arc second. The residuals from an orbit in HICQ 2017 were -80" mainly for Right Ascension. Epoch = 2019 Apr. 27.0 TT T = 2019 Apr. 29.97808 +/- 0.09969 (m.e.) TT Peri. = 224.58288 +/- 0.01030 Node = 256.42662 +/- 0.00008 (2000.0) Inc. = 26.45598 +/- 0.00031 q = 7.5627473 +/- 0.0006252 AU e = 0.9960516 +/- 0.0001631 1/a = +0.0005221 +/- 0.0000216 1/AU origin = +0.000241 (Q= 7) future = +0.000435 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2016/ 161210 I52 0.2+ 0.1+ 170101 A77 0.9- 1.0+ 161126 F51 0.1- 0.2+ 161210 I52 0.4+ 0.5+ 170119 461 1.3- 0.3- 161126 F51 0.1- 0.1+ 161220 U69 1.6+ 1.0- 170119 461 0.9- 0.1+ 161126 F51 0.1- 0.1- 161220 U69 1.5+ 1.2- 170120 461 0.5- 0.1- 161208 G96 0.2+ 0.8+ 161220 K88 0.0 0.4+ 170120 461 0.3- 0.5+ 161208 G96 0.1+ 0.2- 161220 K88 0.1- 0.3+ 170126 461 0.0 0.2- 161208 G96 0.5+ 0.3+ 161220 K88 0.4- 0.3+ 170126 461 0.3- 0.9- 161208 G96 0.2- 0.3- 161221 H01 0.1+ 0.2- 170128 215 (0.2+ 4.7-) 161208 I52 0.2+ 0.2+ 161221 H01 0.0 0.2- 170128 215 (0.5+ 5.0-) 161208 I52 0.4+ 0.3+ 161221 H01 0.0 0.2- 170128 215 (1.1+ 4.8-) 161208 I52 0.2+ 0.1+ 161222 215 0.6- 0.3+ 170216 461 0.2- 0.6- 161208 I52 0.6+ 0.1+ 161222 215 1.8- 0.4- 170216 461 0.3+ 0.0 161209 H36 0.9- 1.4- 161225 349 0.3- 1.8- 171002 461 0.1+ 0.1- 161209 H36 0.9+ 0.7- 161225 349 (0.4+ 2.6-) 171002 461 0.1+ 0.1+ 161209 H36 0.3- 0.7- 161229 K77 0.9+ 0.5+ 171002 461 0.1+ 0.0 161209 I52 0.9- 1.7- 161229 K77 0.9+ 0.7+ 171015 461 0.0 0.0 161209 I52 0.1+ 0.1+ 161230 J22 1.6+ 0.7+ 171015 461 0.1- 0.2+ 161209 I52 0.2+ 0.2+ 161230 J22 1.7+ 1.2+ 171016 461 0.1- 0.0 161210 I52 0.0 0.6+ 161231 A77 0.3+ 0.3+ 171016 461 0.1- 0.0 161210 I52 0.0 0.0 2017/ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2017 Nov. 11