March 9, 2017A15:28:56 UT Orbit-1 Orbital elements: C/2017 E1 (Borisov) T 2017 Apr. 10.17033 TT Sato q 0.9001035 (2000.0) P Q Peri. 152.52072 +0.43524623 +0.88734852 Node 142.71084 -0.86526066 +0.45899820 e 1.0 Incl. 14.55258 -0.24876640 -0.04396892 From 84 observations 2017 Mar. 1-8, mean residual 0".64. Residuals in seconds of arc 170301 L51 (2.2- 1.7+) 170302 H36 0.6- 0.2- 170304 Q11 0.2- 0.2+ 170301 L51 1.5- 1.2- 170302 H36 0.1+ 0.5- 170304 Q11 0.4- 0.2+ 170301 L51 1.1+ 0.8- 170302 H06 0.2+ 0.0 170304 367 0.3- 0.4+ 170301 H06 0.9- 1.0- 170302 H06 0.2- 0.8+ 170304 367 0.2- 0.3+ 170301 H06 0.9+ 1.7- 170302 349 1.4- 0.4+ 170304 367 0.2+ 0.2+ 170301 H06 0.0 0.1- 170302 349 1.8- 1.0+ 170304 367 0.5- 0.6+ 170301 H06 1.0- 0.2- 170303 Y00 0.5+ 1.2+ 170305 A77 0.9+ 0.6+ 170301 H06 0.4+ 1.0- 170303 Y00 0.9- 1.0+ 170305 A77 0.7+ 1.5+ 170301 H06 1.1+ 1.2- 170303 Y00 0.4+ 0.4+ 170305 A77 (0.5+ 2.6+) 170301 H06 1.0+ 0.6- 170303 850 0.3- 0.5+ 170305 W88 0.6+ 0.3+ 170301 291 0.2+ 0.5+ 170303 850 0.2+ 0.9- 170305 W88 0.9+ 0.2- 170301 H06 0.4+ 1.0- 170303 850 0.6+ 0.9- 170305 W88 0.1+ 0.3- 170301 291 0.3+ 0.3+ 170303 850 1.4+ 0.0 170305 W88 0.4+ 0.2- 170301 H06 0.6+ 1.1- 170303 Q11 0.2- 0.1+ 170305 W88 0.6+ 0.5- 170301 291 0.7+ 0.5+ 170303 349 0.4- 0.1- 170307 Q62 0.3+ 0.5- 170302 G40 0.1+ 0.5+ 170303 349 0.3+ 0.6+ 170307 Q62 0.1- 0.4- 170302 G40 0.5- 0.2- 170303 Q11 0.1+ 0.0 170307 Q62 0.5+ 0.2+ 170302 I47 0.8- 0.0 170303 D81 1.6+ 0.7+ 170307 Q62 0.3- 0.3- 170302 I47 0.1+ 0.2+ 170304 585 0.1- 0.0 170307 Q62 0.4- 0.1- 170302 I47 1.3- 0.1+ 170304 585 0.2- 0.3- 170307 Q62 0.3- 0.1- 170302 850 (3.2- 0.3+) 170304 585 0.1+ 0.4- 170307 Q62 0.1- 0.5- 170302 850 0.3- 0.1+ 170304 585 0.5+ 0.0 170307 Q62 0.2+ 0.1- 170302 850 0.5+ 0.3- 170304 I47 0.6- 0.4+ 170307 Q62 0.6- 0.3- 170302 850 1.0- 0.8+ 170304 I47 0.4+ 0.7- 170307 Q62 0.1- 0.2- 170302 850 (2.1- 1.5-) 170304 I47 0.2+ 0.0 170308 W96 0.0 0.5- 170302 H06 0.7+ 0.4+ 170304 850 1.4- 0.8- 170308 W96 0.1+ 0.3- 170302 H06 0.9+ 1.2+ 170304 850 0.3- 0.2+ 170308 W96 0.3+ 0.2- 170302 H06 0.8- 1.8+ 170304 850 0.2+ 0.2+ 170308 850 (5.4+ 3.4-) 170302 H36 0.1+ 0.4+ 170304 372 0.7- 0.3+ 170308 850 (1.9+ 2.9-) 170302 H06 0.1- 0.3+ 170304 372 0.6- 0.0 170302 H06 (2.2- 0.9+) 170304 Q11 0.1- 0.1+ Orbit-2 Orbital elements: C/2017 E1 (Borisov) T 2017 Apr. 11.34526 TT Sato q 0.8814415 (2000.0) P Q n 0.02529317 Peri. 154.50430 +0.45283352 +0.87806988 a 11.4938933 Node 141.87770 -0.85492227 +0.47687484 e 0.9233122 Incl. 14.51338 -0.25308046 -0.03979545 P 38.97 From 84 observations 2017 Mar. 1-8, mean residual 0".63. Residuals in seconds of arc 170301 L51 (2.0- 2.0+) 170302 H36 0.7- 0.2- 170304 Q11 0.2- 0.1+ 170301 L51 1.4- 0.9- 170302 H36 0.0 0.5- 170304 Q11 0.3- 0.1+ 170301 L51 1.3+ 0.6- 170302 H06 0.1+ 0.1+ 170304 367 0.3- 0.3+ 170301 H06 0.8- 0.8- 170302 H06 0.3- 0.8+ 170304 367 0.1- 0.2+ 170301 H06 1.0+ 1.5- 170302 349 1.4- 0.3+ 170304 367 0.3+ 0.1+ 170301 H06 0.1+ 0.1+ 170302 349 1.9- 1.0+ 170304 367 0.4- 0.5+ 170301 H06 1.0- 0.0 170303 Y00 0.4+ 1.0+ 170305 A77 1.0+ 0.5+ 170301 H06 0.5+ 0.8- 170303 Y00 1.0- 0.9+ 170305 A77 0.9+ 1.5+ 170301 H06 1.1+ 1.0- 170303 Y00 0.3+ 0.3+ 170305 A77 (0.6+ 2.6+) 170301 H06 1.0+ 0.5- 170303 850 0.4- 0.4+ 170305 W88 0.7+ 0.1+ 170301 291 0.2+ 0.7+ 170303 850 0.1+ 1.0- 170305 W88 1.0+ 0.4- 170301 H06 0.5+ 0.8- 170303 850 0.5+ 1.0- 170305 W88 0.2+ 0.5- 170301 291 0.3+ 0.5+ 170303 850 1.4+ 0.1- 170305 W88 0.5+ 0.4- 170301 H06 0.7+ 0.9- 170303 Q11 0.3- 0.0 170305 W88 0.7+ 0.6- 170301 291 0.8+ 0.7+ 170303 349 0.4- 0.2- 170307 Q62 0.3+ 0.4- 170302 G40 0.1+ 0.5+ 170303 349 0.3+ 0.5+ 170307 Q62 0.0 0.3- 170302 G40 0.5- 0.2- 170303 Q11 0.1+ 0.1- 170307 Q62 0.5+ 0.4+ 170302 I47 0.9- 0.1- 170303 D81 1.5+ 0.6+ 170307 Q62 0.3- 0.2- 170302 I47 0.1+ 0.1+ 170304 585 0.1- 0.1- 170307 Q62 0.4- 0.0 170302 I47 1.4- 0.0 170304 585 0.2- 0.4- 170307 Q62 0.3- 0.0 170302 850 (3.3- 0.3+) 170304 585 0.1+ 0.5- 170307 Q62 0.0 0.3- 170302 850 0.4- 0.1+ 170304 585 0.5+ 0.1- 170307 Q62 0.2+ 0.1+ 170302 850 0.4+ 0.2- 170304 I47 0.6- 0.1+ 170307 Q62 0.6- 0.2- 170302 850 1.1- 0.9+ 170304 I47 0.4+ 1.0- 170307 Q62 0.0 0.1- 170302 850 (2.1- 1.5-) 170304 I47 0.2+ 0.2- 170308 W96 0.2- 0.2- 170302 H06 0.6+ 0.4+ 170304 850 1.4- 0.9- 170308 W96 0.1- 0.0 170302 H06 0.9+ 1.2+ 170304 850 0.2- 0.1+ 170308 W96 0.1+ 0.1+ 170302 H06 0.9- 1.8+ 170304 850 0.3+ 0.1+ 170308 850 (5.2+ 3.0-) 170302 H36 0.0 0.4+ 170304 372 0.7- 0.2+ 170308 850 (1.6+ 2.5-) 170302 H06 0.2- 0.3+ 170304 372 0.5- 0.1- 170302 H06 (2.3- 0.9+) 170304 Q11 0.0 0.0 March 4, 2017A19:28:22 UT Orbit-1 Orbital elements: C/2017 E1 (Borisov) = gb00099 T 2017 Apr. 10.25847 TT Sato q 0.8990781 (2000.0) P Q Peri. 152.69030 +0.43795865 +0.88601434 Node 142.71641 -0.86386104 +0.46163957 e 1.0 Incl. 14.55367 -0.24887010 -0.04321447 From 55 observations 2017 Mar. 1-4, mean residual 0".73. Orbit-2 Orbital elements: C/2017 E1 (Borisov) = gb00099 T 2017 Apr. 15.66718 TT Sato q 0.8208592 (2000.0) P Q n 0.19292043 Peri. 162.37836 +0.52985890 +0.83242160 a 2.9663147 Node 139.19999 -0.80494154 +0.55385657 e 0.7232730 Incl. 14.37710 -0.26705555 -0.01780966 P 5.11 From 55 observations 2017 Mar. 1-4, mean residual 0".70. March 3, 2017A18:51:24 UT Orbit-1 Orbital elements: gb00099 T 2017 Apr. 10.43639 TT Sato q 0.8968720 (2000.0) P Q Peri. 153.04428 +0.44351069 +0.88324755 Node 142.72181 -0.86095771 +0.46705120 e 1.0 Incl. 14.55591 -0.24909855 -0.04167670 From 42 observations 2017 Mar. 1-3, mean residual 0".77. Orbit-2 Orbital elements: gb00099 T 2017 Apr. 17.99877 TT Sato q 0.7912159 (2000.0) P Q n 0.29034468 Peri. 167.04105 +0.57749693 +0.79942424 a 2.2587082 Node 137.90735 -0.76933427 +0.60076386 e 0.6497042 Incl. 14.30116 -0.27317042 -0.00191519 P 3.39 From 50 observations 2017 Mar. 1-4, mean residual 0".72. March 2, 2017A14:28:22 UT Orbital elements: gb00099 T 2017 Apr. 7.59462 TT Sato q 0.9285931 (2000.0) P Q Peri. 147.37928 +0.35722057 +0.92171977 Node 142.91560 -0.90166630 +0.38251050 e 1.0 Incl. 14.51044 -0.24370340 -0.06417457 From 30 observations 2017 Mar. 1-2, mean residual 0".75. --