2020 August 25. 18:00:08 UT Orbital elements: C/2020 Q1 (Borisov) Epoch 2020 Aug. 19.0 TT = JDT 2459080.5 T 2020 Aug. 15.91820 TT Sato q 1.3224945 (2000.0) P Q z -0.0154649 Peri. 11.05293 +0.71682073 +0.50634300 +/-0.0104192 Node 52.66674 +0.58489560 -0.81090699 e 1.0204522 Incl. 142.92393 +0.37955919 +0.29333705 From 96 observations 2020 Aug. 17-25, mean residual 0".65. Epoch 2020 Sept. 28.0 TT = JDT 2459120.5 T 2020 Aug. 15.91935 TT Sato q 1.3224999 (2000.0) P Q z -0.0154557 Peri. 11.05411 +0.71683091 +0.50632827 +/-0.0104192 Node 52.66675 +0.58487912 -0.81091887 e 1.0204401 Incl. 142.92391 +0.37956536 +0.29332962 Residuals in seconds of arc 200817 L51 1.0- 1.6+ 200819 H06 0.9+ 0.3- 200821 367 0.2- 0.5- 200817 L51 0.3+ 1.7- 200819 H06 0.7+ 0.4- 200821 367 0.1+ 0.4- 200817 L51 0.4- 1.5- 200819 H06 0.5+ 0.5- 200822 I81 0.8- 0.6+ 200818 P87 0.2+ 1.6- 200819 349 0.0 0.1+ 200822 I81 0.2+ 0.5- 200818 P87 0.7- 0.6+ 200819 349 0.3+ 0.2- 200822 I81 0.5- 0.1+ 200818 P87 0.6- 0.1+ 200819 Q21 0.4+ 0.9- 200822 I81 0.3- 0.0 200818 L51 0.2- 0.2- 200819 Q21 1.6+ 0.8- 200822 I81 0.8- 0.2- 200819 L51 0.2- 0.0 200819 349 0.1- 0.1+ 200822 I81 0.6- 0.2+ 200819 L51 0.1+ 0.2- 200819 Q21 1.1+ 1.4+ 200822 I81 0.3- 0.7+ 200819 L33 0.2+ 1.1+ 200819 L33 1.8- 1.7+ 200822 Z10 0.2+ 0.2- 200819 L51 0.4- 0.4- 200820 L33 (0.4+ 2.9+) 200822 Z10 0.4+ 0.1- 200819 L51 0.2- 0.2- 200820 L33 0.8- 1.0+ 200823 213 0.4- 0.1- 200819 L33 (0.3+ 2.0+) 200820 B49 1.3+ 0.9- 200823 213 0.2- 0.3- 200819 L33 (1.3- 3.9+) 200820 B49 1.2+ 0.4- 200823 G20 0.3+ 1.5- 200819 L07 0.2+ 0.5- 200820 B49 0.6- 0.1+ 200823 G20 0.6+ 1.6- 200819 B96 0.8+ 1.7+ 200820 B49 0.8- 0.0 200823 213 0.2- 0.2+ 200819 B96 1.3- 0.4+ 200820 B49 0.7+ 0.1+ 200823 J01 1.0- 0.4- 200819 L07 0.2+ 0.4- 200820 A77 0.2- 0.0 200823 Z90 0.2+ 0.3- 200819 I89 0.0 0.1- 200820 A77 0.3- 0.6+ 200823 J01 0.0 0.1+ 200819 A77 0.4+ 1.1- 200820 G40 0.3+ 0.1+ 200823 Z90 0.1- 0.1+ 200819 B96 1.1- 0.5+ 200820 G40 0.3+ 0.2- 200823 Z90 0.8+ 0.8- 200819 A77 0.3+ 0.4+ 200820 Q23 0.7- 0.6+ 200823 Z90 0.6- 0.1+ 200819 L07 0.1+ 0.3- 200820 Q23 0.4- 0.6+ 200823 Z90 0.0 1.5+ 200819 A77 0.0 0.5+ 200821 L06 0.0 0.1+ 200823 J01 1.7+ 1.7+ 200819 I89 0.5+ 0.2- 200821 L06 0.2+ 0.3+ 200823 Z90 0.0 0.1+ 200819 A77 0.1- 0.3+ 200821 L06 0.3+ 0.2+ 200823 G40 0.1+ 0.6- 200819 A77 0.1+ 0.4+ 200821 I89 0.4- 0.2- 200823 G40 0.4+ 0.1- 200819 B96 0.1+ 1.0+ 200821 I89 0.3- 1.4+ 200824 Q11 0.6+ 0.0 200819 J04 0.5+ 0.4- 200821 I89 0.9- 1.2- 200824 Q11 0.7+ 0.2- 200819 J04 0.1+ 0.4+ 200821 I89 0.7+ 0.2+ 200824 Q11 0.6+ 0.1- 200819 J04 0.1+ 0.1+ 200821 I89 0.5+ 0.6- 200825 Q23 0.4- 0.4+ 200819 H06 0.1+ 0.4- 200821 I89 0.7- 0.2- 200825 Q23 0.2- 0.2+ 200819 H06 0.3+ 0.3+ 200821 367 0.4- 0.3- 200825 Q23 0.6- 0.2+ 2020 August 24. 00:05:48 UT Orbital elements: C/2020 Q1 (Borisov) Epoch 2020 Aug. 19.0 TT = JDT 2459080.5 T 2020 Aug. 16.34873 TT Sato q 1.3289452 (2000.0) P Q z -0.0349978 Peri. 11.41113 +0.71740058 +0.50254551 +/-0.0419340 Node 52.85803 +0.58202703 -0.81295549 e 1.0465102 Incl. 142.75251 +0.38285891 +0.29419617 From 53 observations 2020 Aug. 17-23, mean residual 0".88. 2020 August 20. 04:58:12 UT Orbital elements: C/2020 Q1 (Borisov) T 2020 Aug. 15.39370 TT Sato q 1.3181555 (2000.0) P Q Peri. 10.57199 +0.71449695 +0.51092325 Node 52.50956 +0.58988383 -0.80726765 e 1.0 Incl. 142.95904 +0.37620629 +0.29542575 From 39 observations 2020 Aug. 17-20, mean residual 0".64. --