2020 August 18. 07:40:11 UT Orbital elements: C/2020 P3 (ATLAS) Epoch 2021 Apr. 16.0 TT = JDT 2459320.5 T 2021 May 4.09866 TT Sato q 6.7737626 (2000.0) P Q n 0.00035339 Peri. 83.27048 -0.04485276 -0.95520836 a 198.1386830 Node 19.37432 +0.09278309 -0.29552755 e 0.9658130 Incl. 61.85601 +0.99467559 -0.01550633 P2789.03 From 86 observations 2020 Aug. 9-17, mean residual 0".35. Epoch 2020 Aug. 19.0 TT = JDT 2459080.5 T 2021 May 4.19701 TT Sato q 6.7737019 (2000.0) P Q n 0.00035969 Peri. 83.27104 -0.04495263 -0.95514301 a 195.8160542 Node 19.38729 +0.09271179 -0.29573372 e 0.9654078 Incl. 61.85960 +0.99467773 -0.01560122 P2740.14 Residuals in seconds of arc 200809 T08 0.6- 0.6- 200811 Z23 0.6+ 0.3+ 200812 950 0.3+ 0.5+ 200809 T08 0.0 0.5- 200811 Z23 0.5+ 0.2+ 200812 C47 0.2- 0.0 200809 T08 0.9- 0.5+ 200811 Z23 0.5+ 0.2+ 200812 C47 0.1+ 0.0 200809 T08 0.2- 0.4- 200811 Z23 0.5+ 0.2+ 200812 C47 0.2+ 0.0 200809 L01 0.1- 0.4- 200811 Z23 0.5+ 0.2+ 200813 XXE 0.8- 0.3- 200809 L01 0.3- 0.4- 200811 Z23 0.5+ 0.2+ 200813 XXE 0.2+ 0.4- 200809 L01 0.3- 0.5- 200811 Z23 0.5+ 0.1+ 200813 XXE 0.3- 0.0 200809 L01 0.4- 0.4- 200811 Z23 0.6+ 0.2+ 200813 G40 0.2- 0.5- 200810 L07 0.0 0.0 200811 Z23 0.6+ 0.4+ 200813 XXE 0.4- 0.2- 200810 L07 0.1- 0.1- 200811 Z23 0.5+ 0.1+ 200813 G40 0.3+ 0.1- 200810 L07 0.0 0.1- 200811 033 0.2- 0.0 200813 G40 0.2- 0.0 200810 U55 0.1- 0.5+ 200811 033 0.1- 0.3- 200813 G40 0.5- 0.0 200810 U55 0.8- 0.4- 200811 033 0.1+ 0.3- 200813 G40 0.3- 0.4- 200810 U55 0.1- 0.7+ 200811 033 0.1- 0.1- 200814 G40 0.3- 0.1+ 200810 H06 0.1- 0.2+ 200811 C77 0.6- 0.4- 200814 A77 0.1+ 0.5- 200810 H06 0.1+ 0.2+ 200811 C77 0.5- 0.7- 200814 A77 0.1+ 0.6+ 200810 H06 0.1- 0.2+ 200811 C77 0.1+ 0.5+ 200814 A77 0.1+ 0.3+ 200810 F65 0.4+ 0.6+ 200812 L07 0.0 0.1+ 200814 G40 0.4- 0.2- 200810 F65 0.3+ 0.3+ 200812 L07 0.0 0.1+ 200814 G40 0.3- 0.1- 200810 F65 0.6+ 0.4+ 200812 L07 0.1- 0.0 200814 H36 0.1- 0.0 200810 F65 0.4+ 0.5+ 200812 G40 0.2- 0.4- 200814 H36 0.3- 0.2- 200810 F65 0.7+ 0.4+ 200812 G40 0.1+ 0.2- 200814 H36 0.5- 0.0 200810 L04 0.6+ 0.3- 200812 G40 0.1+ 0.1+ 200815 K63 0.5+ 0.2- 200810 L04 0.7- 0.1- 200812 G40 0.4- 0.2+ 200815 K63 0.1- 0.1+ 200810 L01 0.3- 0.5- 200812 G40 0.2+ 0.5- 200815 K63 0.3+ 0.1+ 200810 L01 0.0 0.1- 200812 G40 0.4- 0.2- 200817 Q11 0.1+ 0.2+ 200810 L01 0.2- 0.1- 200812 950 0.4+ 0.5+ 200817 Q11 0.1+ 0.1+ 200811 L07 0.1- 0.1- 200812 950 0.3+ 0.6+ 200817 Q11 0.3+ 0.0 200811 L07 0.2+ 0.1+ 200812 950 0.4+ 0.6+ 2020 August 16. 08:01:58 UT Orbital elements: C/2020 P3 (ATLAS) Epoch 2021 Apr. 16.0 TT = JDT 2459320.5 T 2021 Mar. 30.97664 TT Sato q 6.7853530 (2000.0) P Q n 0.00248140 Peri. 80.53258 +0.00478299 -0.95892295 a 54.0345536 Node 18.80014 +0.11008243 -0.28140087 e 0.8744257 Incl. 61.65379 +0.99391095 +0.03578169 P 397.20 From 79 observations 2020 Aug. 9-15, mean residual 0".34. --