December 17, 2015A07:05:36 UT Orbital elements: C/2015 X5 (PANSTARRS) = P10pTfd T 2017 Dec. 31.18179 TT Sato q 6.8076159 (2000.0) P Q Peri. 27.68547 -0.25212573 +0.66984975 Node 122.30894 +0.66226612 -0.40676868 e 1.0 Incl. 124.27846 +0.70557509 +0.62116065 From 20 observations 2015 Dec. 6-13, mean residual 0".27. Residuals in seconds of arc 151206 F51 0.1+ 0.2- 151207 W85 0.3- 0.1- 151208 568 0.1- 0.4+ 151206 F51 0.0 0.0 151208 H01 0.1+ 0.0 151208 568 0.2- 0.4+ 151206 F51 0.0 0.1+ 151208 H01 0.1- 0.3+ 151208 568 0.3- 0.3+ 151206 F51 0.1+ 0.1- 151208 H01 0.0 0.1+ 151213 926 0.0 0.3- 151207 W85 0.2- 0.1- 151208 H01 0.1+ 0.0 151213 926 0.3+ 0.0 151207 W85 0.1- 0.2- 151208 H06 1.2+ 0.2- 151213 926 0.5- 0.0 151207 W85 0.2- 0.3- 151208 H06 0.1+ 0.2- December 14, 2015A08:19:36 UT Orbital elements: P10pTfd T 2017 Dec. 31.2705 TT Sato q 6.806491 (2000.0) P Q Peri. 27.7006 -0.2519798 +0.6698915 Node 122.3100 +0.6621417 -0.4069563 e 1.0 Incl. 124.2760 +0.7057440 +0.6209927 From 20 observations 2015 Dec. 6-13, mean residual 0".27. December 13, 2015A11:11:36 UT Orbital elements: P10pTfd T 2013 Nov. 3.8212 TT Sato q 3.290859 (2000.0) P Q Peri. 244.4019 +0.0799220 -0.6654837 Node 129.3974 -0.1082346 +0.7343073 e 1.0 Incl. 106.1888 -0.9909075 -0.1338816 From 13 observations 2015 Dec. 6-8, mean residual 0".27. --