2017 July 25, 14:25:27 UT Orbital elements: C/2017 O1 = ASASSN1 T 2017 Oct. 14.88599 TT Sato q 1.4972567 (2000.0) P Q Peri. 21.05942 +0.72018496 -0.63515943 Node 25.80007 +0.50872776 +0.20991811 e 1.0 Incl. 39.88920 +0.47173052 +0.74330807 >From 107 observations 2017 July 19-25, mean residual 0".34. Residuals in seconds of arc 170719 807 (2.4- 0.6+) 170721 W96 0.1- 0.1- 170722 Q62 0.3+ 0.1+ 170719 807 0.0 0.9- 170721 W96 0.1- 0.1- 170723 587 0.2+ 0.0 170719 807 (0.1- 3.2-) 170721 W88 0.1- 0.3- 170723 587 0.7+ 0.2+ 170719 247 0.9- 0.5- 170721 W88 0.4+ 0.1+ 170723 Z22 0.6- 0.4- 170719 247 1.3- 0.0 170721 W88 0.4+ 0.2+ 170723 Z22 0.5- 0.3- 170719 247 0.8+ 0.7+ 170721 W88 0.1+ 0.1- 170723 Z22 0.4- 0.0 170719 247 0.6+ 0.3+ 170721 U69 0.1- 0.1+ 170723 Z22 0.2- 0.1+ 170720 W85 0.1+ 0.1+ 170721 U69 0.0 0.0 170723 H47 1.2- 0.2+ 170720 W85 0.0 0.0 170721 U69 0.1- 0.0 170723 H47 1.1- 0.5- 170721 470 0.0 0.1- 170721 Q62 0.4+ 0.7+ 170723 U69 0.4+ 0.1- 170721 470 0.3+ 0.1- 170721 Q62 0.5+ 0.3+ 170723 U69 0.2+ 0.0 170721 470 0.1+ 0.1+ 170721 349 0.7- 0.2- 170723 U69 0.3+ 0.2- 170721 C10 0.7- 0.5+ 170721 349 0.2- 0.3+ 170723 U69 0.5+ 0.1+ 170721 C10 0.2- 0.7+ 170721 Q62 0.2+ 0.1+ 170723 Q62 0.2+ 0.1- 170721 470 0.1+ 0.4+ 170721 Q62 0.0 0.0 170723 Q62 0.6+ 0.3+ 170721 C10 0.1+ 0.1+ 170721 Q62 0.1- 0.0 170723 Q62 0.5+ 0.0 170721 470 0.1- 0.2+ 170721 Q62 0.2+ 0.0 170723 Q62 0.1+ 0.2- 170721 470 0.1- 0.0 170721 Q62 0.1+ 0.0 170723 Q62 0.8+ 0.2+ 170721 C10 0.5- 0.5+ 170721 Q62 0.1+ 0.0 170723 Q62 0.4+ 0.3+ 170721 K91 0.2+ 0.2- 170722 Y00 0.8- 0.2- 170723 Q62 0.1+ 0.2+ 170721 K91 0.1+ 0.1- 170722 Y00 0.6- 0.2- 170723 Q62 0.2- 0.1+ 170721 K91 0.2+ 0.2- 170722 Y00 0.6- 0.1- 170724 W96 0.3- 0.2- 170721 K91 0.2+ 0.1- 170722 Y00 0.4- 0.1- 170724 W96 0.4- 0.0 170721 K91 0.2+ 0.1- 170722 Y00 0.5- 0.2- 170724 Y00 0.5- 0.6- 170721 G40 0.4+ 0.1- 170722 Y00 0.5- 0.2- 170724 Y00 0.1+ 0.3- 170721 G40 0.4+ 0.1- 170722 Y00 0.4- 0.3- 170724 Y00 0.2- 0.4- 170721 J22 0.5+ 0.2- 170722 Y00 0.3- 0.3- 170724 G39 0.2+ 0.1- 170721 G40 0.1- 0.0 170722 Y00 0.3- 0.2- 170724 G39 0.5- 0.2+ 170721 J22 0.5+ 0.0 170722 W85 0.3+ 0.1- 170724 G39 0.1- 0.6+ 170721 G40 0.4+ 0.1- 170722 W85 0.3+ 0.0 170724 G39 0.0 0.1- 170721 J22 0.1- 0.0 170722 W85 0.1+ 0.1- 170724 G39 0.2+ 0.6- 170721 G40 0.2+ 0.0 170722 W85 0.1+ 0.0 170724 G39 0.2+ 0.3+ 170721 J04 0.0 0.0 170722 W85 0.3+ 0.0 170725 A77 0.2+ 0.3+ 170721 J04 0.1- 0.0 170722 W85 0.1+ 0.1- 170725 A77 0.0 0.0 170721 J04 0.0 0.0 170722 W85 0.2+ 0.0 170725 A77 0.2+ 0.9+ 170721 W96 0.1+ 0.1- 170722 Q62 0.3+ 0.1+ 170721 W96 0.0 0.0 170722 Q62 0.4+ 0.1+ 2017 July 25, 07:36:17 UT Orbital elements: C/2017 O1 = ASASSN1 T 2017 Oct. 14.78587 TT Sato q 1.4988034 (2000.0) P Q Peri. 20.93130 +0.72127315 -0.63386795 Node 25.82560 +0.50866909 +0.21110225 e 1.0 Incl. 39.86671 +0.47012849 +0.74407477 From 104 observations 2017 July 19-24, mean residual 0".34. 2017 July 23, 19:09:35 UT Orbital elements: ASASSN1 T 2017 Oct. 14.91691 TT Sato q 1.4967778 (2000.0) P Q Peri. 21.09902 +0.71984749 -0.63555885 Node 25.79224 +0.50874608 +0.20955212 e 1.0 Incl. 39.89613 +0.47222560 +0.74306989 From 89 observations 2017 July 19-23, mean residual 0".31. 2017 July 23, 11:10:12 UT Orbital elements: ASASSN1 T 2017 Oct. 14.74618 TT Sato q 1.4994219 (2000.0) P Q Peri. 20.88063 +0.72170708 -0.63335221 Node 25.83540 +0.50863941 +0.21156823 e 1.0 Incl. 39.85823 +0.46949424 +0.74438153 From 79 observations 2017 July 19-23, mean residual 0".28. 2017 July 22, 14:31:17 UT Orbital elements: ASASSN1 T 2017 Oct. 12.97770 TT Sato q 1.5256544 (2000.0) P Q Peri. 18.69270 +0.74001893 -0.61089615 Node 26.26314 +0.50700547 +0.23177106 e 1.0 Incl. 39.48735 +0.44194732 +0.75702580 From 60 observations 2017 July 19-22, mean residual 0".31. 2017 July 21, 21:05:01 UT Orbital elements: ASASSN1 T 2017 Oct. 14.17212 TT Sato q 1.5080504 (2000.0) P Q Peri. 20.15497 +0.72776785 -0.62605693 Node 25.98394 +0.50831347 +0.21830669 e 1.0 Incl. 39.72642 +0.46040349 +0.74859529 From 43 observations 2017 July 19-21, mean residual 0".32. --