2018 July 2, 11:20:27 UT Orbital elements: C/2018 M1 (Catalina) = ZM2A6E9 T 2018 July 9.91352 TT Sato q 1.3152466 (2000.0) P Q Peri. 14.05781 +0.97757365 +0.03544964 Node 339.99884 -0.19662025 +0.50672181 e 1.0 Incl. 37.36678 +0.07543372 +0.86138048 From 29 observations 2018 June 25-July 1, mean residual 0".66. Residuals in seconds of arc 180625 703 0.4+ 0.2+ 180628 H36 0.9- 1.0+ 180630 C10 1.3- 0.1+ 180625 703 (2.7+ 1.2+) 180628 H36 1.8- 1.0- 180630 C10 0.7- 1.1+ 180625 703 (5.0+ 0.6+) 180629 G40 0.8+ 0.8- 180630 C10 (0.9+ 2.0+) 180625 Q62 0.3+ 0.0 180629 G40 0.5+ 0.4+ 180701 204 0.7+ 0.2- 180625 Q62 0.6+ 0.0 180629 G40 0.5- 0.5- 180701 204 0.2+ 0.3- 180625 Q62 0.7+ 0.2+ 180629 G40 0.1+ 0.3- 180701 204 0.2- 0.1- 180626 691 0.3- 0.2- 180629 G40 0.5- 0.0 180701 I52 0.1- 0.9- 180626 691 0.7- 0.2- 180629 N55 0.9+ 1.3+ 180701 I52 0.3+ 0.2- 180626 691 0.1- 0.0 180629 N55 0.7+ 1.5+ 180701 I52 0.4- 0.7- 180628 G40 0.1+ 0.6- 180629 N55 0.3+ 1.0+ 180701 I52 0.3+ 0.4- 180628 G40 0.2- 1.0- 180629 N55 0.8+ 0.9+ 2018 July 1, 11:29:16 UT Orbital elements: ZM2A6E9 Epoch 2018 July 21.0 TT = JDT 2458320.5 T 2018 July 9.81431 TT Sato q 1.3066176 (2000.0) P Q n 0.00597535 Peri. 13.95645 +0.97650894 +0.04338080 a 30.0764748 Node 339.58965 -0.20348706 +0.50784406 e 0.9565568 Incl. 37.24460 +0.07087526 +0.86035604 P 164.95 From 30 observations 2018 June 25-July 1, mean residual 0".70. 2018 June 27, 12:45:52 UT Orbital elements: ZM2A6E9 T 2018 July 28.82688 TT Sato q 1.2085682 (2000.0) P Q n 0.24295175 Peri. 30.39447 +0.94657359 -0.20469939 a 2.5436422 Node 336.93290 -0.10849479 +0.52553371 e 0.5248671 Incl. 39.49447 +0.30368952 +0.82577992 P 4.06 From 7 observations 2018 June 25-26, mean residual 0".14. --