December 16, 2015A15:18:446 UT Orbital elements: C/2015 XY1 (Lemmon) T 2018 May 13.46195 TT Sato q 7.8298656 (2000.0) P Q Peri. 197.79045 +0.06115077 +0.85873463 Node 281.77964 +0.96726491 +0.07478898 e 1.0 Incl. 148.68762 +0.24629084 -0.50693338 From 18 observations 2015 Dec. 4-16, mean residual 0".37. Residuals in seconds of arc 151204 G96 0.1+ 0.3+ 151205 033 0.1+ 0.3+ 151205 926 0.2- 1.5- 151204 G96 0.0 0.4+ 151205 033 0.1- 0.1+ 151205 926 0.4- 0.8- 151204 G96 0.2+ 0.2+ 151205 033 0.1+ 0.4+ 151216 G96 0.0 0.1+ 151204 G96 0.0 0.3+ 151205 H36 0.4- 0.0 151216 G96 0.0 0.1+ 151205 033 0.3+ 0.6+ 151205 H36 0.1+ 0.1- 151216 G96 0.3+ 0.1- 151205 033 0.0 0.3+ 151205 H36 0.2+ 0.6- 151216 G96 0.3- 0.1+ --