December 21, 2016A09:16:28 UT Orbital elements: C/2016 X1 (Lemmon) = XXB8AB4 Epoch 2019 Apr. 27.0 TT = JDT 2458600.5 T 2019 May 2.27728 TT Sato q 7.5669293 (2000.0) P Q z +0.0007262 Peri. 224.65539 -0.44417878 -0.78382685 +/-0.0023147 Node 256.41188 +0.89476077 -0.36326307 e 0.9945046 Incl. 26.51651 +0.04591695 -0.50364214 From 29 observations 2016 Nov. 26-Dec. 21, mean residual 0".55. Epoch 2017 Jan. 7.0 TT = JDT 2457760.5 T 2019 May 1.95192 TT q 7.5668510 (2000.0) P Q z +0.0003695 Peri. 224.65854 -0.44421565 -0.78391843 +/-0.0023147 Node 256.40682 +0.89473614 -0.36328985 e 0.9972041 Incl. 26.50374 +0.04604010 -0.50348026 Residuals in seconds of arc 161126 F51 0.0 0.1+ 161208 I52 0.5+ 0.2+ 161210 I52 0.3+ 0.6+ 161126 F51 0.1+ 0.0 161209 H36 1.0- 1.3- 161220 U69 1.3+ 0.8- 161126 F51 0.0 0.2- 161209 H36 0.8+ 0.6- 161220 U69 1.2+ 1.0- 161208 G96 0.1+ 0.9+ 161209 H36 0.4- 0.5- 161220 K88 0.3- 0.6+ 161208 G96 0.0 0.1- 161209 I52 1.0- 1.6- 161220 K88 0.4- 0.5+ 161208 G96 0.4+ 0.4+ 161209 I52 0.0 0.2+ 161220 K88 0.7- 0.5+ 161208 G96 0.3- 0.2- 161209 I52 0.1+ 0.3+ 161221 H01 0.2- 0.0 161208 I52 0.1+ 0.3+ 161210 I52 0.1- 0.7+ 161221 H01 0.3- 0.0 161208 I52 0.3+ 0.4+ 161210 I52 0.2- 0.2+ 161221 H01 0.3- 0.0 161208 I52 0.1+ 0.2+ 161210 I52 0.1+ 0.2+ December 12, 2016A01:25:39 UT Orbital elements: XXB8AB4 T 2019 June 21.24435 TT Sato q 7.4888056 (2000.0) P Q Peri. 227.69504 -0.47606462 -0.75644878 Node 256.17123 +0.87936494 -0.40429877 e 1.0 Incl. 27.50868 +0.00893228 -0.51412814 From 21 observations 2016 Nov. 26-Dec. 10, mean residual 0".51. --