2017 August 23, 20:14:01 UT Orbital elements: C/2017 P2 (PANSTARRS) = P10Cp1r T 2017 Dec. 6.59483 TT Sato q 2.4611880 (2000.0) P Q Peri. 132.27873 +0.53283216 +0.82424775 Node 165.53526 -0.80166309 +0.41917106 e 1.0 Incl. 50.08612 +0.27097266 -0.38067213 From 30 observations 2017 Aug. 14-22, mean residual 0".30. Residuals in seconds of arc 170814 F51 0.2- 0.1- 170817 658 0.3+ 0.0 170818 291 0.1+ 0.0 170814 F51 0.3- 0.0 170817 658 0.3+ 0.1+ 170818 291 0.0 0.2- 170814 F51 0.5- 0.2+ 170817 658 0.1+ 0.1+ 170819 568 0.6- 0.0 170814 F51 0.5- 0.1+ 170817 568 0.5- 0.0 170819 568 0.1- 0.0 170815 291 0.4+ 0.3+ 170817 568 0.3- 0.1+ 170820 568 0.3- 0.0 170815 291 0.5+ 0.3+ 170817 568 0.3- 0.0 170820 568 0.3- 0.1+ 170815 291 1.4+ 0.1- 170818 H21 0.1- 0.3- 170820 568 0.3- 0.0 170816 H21 0.3+ 0.0 170818 H21 0.0 0.2- 170822 658 0.3+ 0.1+ 170816 H21 0.2+ 0.1- 170818 H21 0.1+ 0.2- 170822 658 0.3+ 0.1+ 170816 H21 0.4- 0.5- 170818 291 0.3+ 0.0 170822 658 0.2+ 0.1+ 2017 August 21, 06:00:26 UT Orbital elements: P10Cp1r T 2017 Dec. 5.96850 TT Sato q 2.4770486 (2000.0) P Q Peri. 131.84153 +0.52435954 +0.82901941 Node 165.32973 -0.80636190 +0.41013037 e 1.0 Incl. 50.12323 +0.27354628 -0.38015772 From 24 observations 2017 Aug. 14-19, mean residual 0".30. 2017 August 18, 13:35:50 UT Orbital elements: P10Cp1r T 2017 Dec. 5.54444 TT Sato q 2.4868894 (2000.0) P Q Peri. 131.55921 +0.51899702 +0.83200680 Node 165.20946 -0.80925022 +0.40444061 e 1.0 Incl. 50.14544 +0.27523839 -0.37972684 From 16 observations 2017 Aug. 14-18, mean residual 0".31. --