Nakano Note (Nakano wa Kangaeru noda) NK 3268 C/2015 XY1 (Lemmon)
The following improved orbital elements, S. Nakano, are from 74 observations 2015 Dec. 4 to 2016 Nov. 24. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.37 arc second. See the previous orbit in NK 3168 (= HICQ 2016). Epoch = 2018 May 2.0 TT T = 2018 Apr. 29.88112 +/- 0.03049 (m.e.) TT Peri. = 196.34786 +/- 0.00283 Node = 281.61642 +/- 0.00015 (2000.0) Inc. = 148.84787 +/- 0.00014 q = 7.9282002 +/- 0.0001933 AU e = 1.0040422 +/- 0.0000279 1/a = -0.0005099 +/- 0.0000035 1/AU origin = +0.000032 (Q= 8) future = +0.000007 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2015/ 151231 461 0.7- 0.6+ 160205 461 0.0 0.7+ 151204 G96 0.0 0.2+ 2016/ 160205 461 0.1+ 0.3+ 151204 G96 0.2- 0.3+ 160101 F51 0.0 0.0 160205 461 0.2+ 0.5+ 151204 G96 0.1+ 0.2+ 160101 F51 0.1+ 0.0 160301 F51 0.1+ 0.1+ 151204 G96 0.1- 0.2+ 160101 F51 0.0 0.1- 160301 F51 0.0 0.0 151205 033 0.2+ 0.5+ 160101 F51 0.2+ 0.0 160301 F51 0.1+ 0.1+ 151205 033 0.1- 0.2+ 160113 703 0.1- 1.0- 160301 F51 0.0 0.1+ 151205 033 0.0 0.3+ 160113 703 1.0+ 0.8- 160309 461 0.1+ 0.2+ 151205 033 0.2- 0.0 160113 703 0.7+ 0.1+ 160309 461 0.3+ 0.4+ 151205 033 0.0 0.3+ 160113 703 1.2+ 0.8- 160309 461 0.1- 0.3+ 151205 H36 0.5- 0.1- 160119 461 0.1- 0.5+ 160310 215 0.4+ 0.3- 151205 H36 0.1+ 0.2- 160119 461 0.2- 0.6+ 160310 215 0.2+ 0.3- 151205 H36 0.1+ 0.7- 160119 461 0.3- 0.4+ 160310 215 0.1+ 0.2- 151205 926 0.3- 1.6- 160119 461 0.2+ 0.4+ 160311 F51 0.1+ 0.2- 151205 926 0.4- 0.9- 160204 G96 0.1+ 0.0 160311 F51 0.1- 0.1- 151216 G96 0.9- 0.1- 160204 G96 0.7+ 0.1- 160311 F51 0.0 0.1- 151216 G96 0.9- 0.0 160204 F51 0.2- 0.0 160311 F51 0.1- 0.0 151216 G96 0.6- 0.3- 160204 G96 0.3+ 0.0 160511 461 0.4- 0.6+ 151216 G96 1.2- 0.1- 160204 F51 0.2- 0.1- 160511 461 0.1- 0.2+ 151219 H06 0.7+ 0.6+ 160204 F51 0.2- 0.0 161107 U69 0.1- 0.1+ 151219 H06 1.3+ 0.7+ 160204 F51 0.2- 0.0 161107 U69 0.1- 0.1+ 151219 H06 1.4+ 0.7+ 160205 850 0.3+ 0.2+ 161107 U69 0.1- 0.1+ 151230 461 0.3- 0.8- 160205 850 0.5+ 0.3- 161124 349 0.2+ 0.2- 151230 461 0.5+ 0.3+ 160205 850 0.0 0.6- 161124 349 0.2+ 0.1- 151231 461 0.4- 0.7+ 160205 850 0.3- 0.0 151231 461 0.3+ 0.9+ 160205 850 0.2+ 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2016 Dec. 5