January 08, 2010A22:53:54 UT Orbit-1 Orbital elements: C/2010 A1 (Hill) T 2009 Sept. 10.93797 TT Sato q 1.6099685 (2000.0) P Q Peri. 1.04393 +0.55383816 -0.81907228 Node 55.34254 +0.76259371 +0.42686822 e 1.0 Incl. 10.47957 +0.33423664 +0.38328074 From 27 observations 2010 Jan. 6-8, mean residual 0".93. Residuals in seconds of arc 100106 703 0.7+ 0.7+ 100106 G96 0.5+ 0.4+ 100107 703 1.0- 0.5- 100106 703 0.5- 1.5+ 100106 900 0.2- 0.5+ 100107 703 0.1- 0.5- 100106 703 1.6- 0.2- 100106 900 0.5- 0.7- 100107 H01 1.2+ 1.0- 100106 703 1.8- 0.7+ 100107 J95 0.7+ 0.8- 100107 H01 1.4+ 1.1- 100106 703 0.1+ 0.2- 100107 J95 1.4+ 0.7- 100107 H01 1.5+ 1.0- 100106 703 0.2+ 0.4+ 100107 H06 0.7+ 0.5- 100107 H01 1.5+ 1.1- 100106 703 0.9- 1.0+ 100107 H06 0.5- 0.7- 100108 349 0.9- 1.6+ 100106 G96 0.1+ 0.6+ 100107 H06 (2.8- 0.5-) 100108 349 0.7- 1.7+ 100106 G96 0.6+ 1.1+ 100107 703 0.8- 1.2- 100106 G96 0.1+ 1.0+ 100107 703 1.0- 1.0- Orbit-2 Orbital elements: C/2010 A1 (Hill) T 2009 Aug. 2.97585 TT Sato q 2.0601933 (2000.0) P Q n 0.14439981 Peri. 19.68292 +0.44034367 -0.88922903 a 3.5982525 Node 44.42886 +0.79819527 +0.32450737 e 0.4274462 Incl. 10.20076 +0.41107392 +0.32243866 P 6.83 From 27 observations 2010 Jan. 6-8, mean residual 0".62. Residuals in seconds of arc 100106 703 1.1+ 0.0 100106 G96 0.5+ 0.2- 100107 703 1.3- 0.4+ 100106 703 0.1- 0.8+ 100106 900 0.3+ 0.3+ 100107 703 0.4- 0.4+ 100106 703 1.3- 0.9- 100106 900 0.0 0.9- 100107 H01 0.8+ 0.1+ 100106 703 1.6- 0.1+ 100107 J95 0.1+ 0.1- 100107 H01 0.9+ 0.0 100106 703 0.3+ 0.9- 100107 J95 0.9+ 0.0 100107 H01 0.9+ 0.0 100106 703 0.5+ 0.3- 100107 H06 0.6+ 0.3+ 100107 H01 0.9+ 0.0 100106 703 0.8- 0.4+ 100107 H06 0.6- 0.1+ 100108 349 0.2- 0.1- 100106 G96 0.1+ 0.0 100107 H06 (3.0- 0.4+) 100108 349 0.0 0.1- 100106 G96 0.6+ 0.6+ 100107 703 1.1- 0.3- 100106 G96 0.1+ 0.4+ 100107 703 1.3- 0.0 January 07, 2010A14:27:22 UT Orbital elements: C/2010 A1 (Hill) T 2010 June 23.1831 TT Sato q 1.018108 (2000.0) P Q Peri. 219.3490 -0.7073700 +0.7065480 Node 5.7380 -0.5859692 -0.5699910 e 1.0 Incl. 11.7947 -0.3953073 -0.4194046 From 25 observations 2010 Jan. 6-7, mean residual 0".62. --