2018 April 24, 00:36:45 UT Orbital elements: C/2018 EF9 (Lemmon) Epoch 2018 June 11.0 TT = JDT 2458280.5 T 2018 May 23.10759 TT Sato q 1.5568449 (2000.0) P Q z +0.0012295 Peri. 72.60364 -0.30785629 +0.94270632 +/-0.0001835 Node 172.58137 -0.42272047 -0.25658496 e 0.9980859 Incl. 84.70110 +0.85236841 +0.21323450 From 103 observations 2018 Mar. 9-Apr. 22, mean residual 0".57. Epoch 2018 May 2.0 TT = JDT 2458240.5 T 2018 May 23.10630 TT Sato q 1.5568450 (2000.0) P Q z +0.0012320 Peri. 72.60270 -0.30787155 +0.94270158 +/-0.0001835 Node 172.58147 -0.42271609 -0.25659011 e 0.9980819 Incl. 84.70115 +0.85236507 +0.21324927 Residuals in seconds of arc 180309 G96 0.2+ 0.8- 180315 033 0.2+ 0.4+ 180320 711 0.4+ 0.3+ 180309 G96 0.8- 1.0- 180315 033 0.2- 0.6+ 180320 711 0.4+ 0.1- 180309 G96 0.2- 0.5+ 180315 033 0.2- 0.3+ 180321 711 0.6+ 0.7+ 180309 G96 0.0 0.7- 180315 033 0.2+ 0.2+ 180321 711 0.8+ 0.7+ 180309 G96 0.9+ 0.8+ 180315 033 0.1- 0.1+ 180321 711 0.3+ 0.8+ 180309 G96 0.2+ 0.3+ 180315 033 0.2- 0.0 180322 I52 0.7+ 0.4- 180309 G96 0.3+ 0.8+ 180315 H06 0.6+ 0.4+ 180322 I52 0.1+ 0.5+ 180309 G96 0.4+ 0.9- 180315 H06 0.4+ 0.1+ 180322 I52 0.1+ 0.2- 180309 G96 0.0 1.2- 180315 H06 0.1+ 0.1- 180322 I52 0.2- 0.1- 180309 G96 0.3+ 0.6+ 180316 I52 0.4- 0.6- 180323 595 0.0 0.6- 180309 H01 0.0 0.3+ 180316 I52 1.0- 0.4+ 180323 595 0.2+ 0.1- 180309 H01 0.1+ 0.2+ 180316 I52 1.1- 0.6- 180324 I52 0.7+ 1.2- 180309 H01 0.0 0.3+ 180316 I52 0.3- 0.8- 180324 I52 0.1- 0.7- 180309 H01 0.1- 0.2+ 180316 658 0.8+ 0.5+ 180324 I52 0.2- 1.1- 180310 G96 0.7- 0.3+ 180316 658 0.9+ 0.7+ 180327 I52 0.4+ 0.2+ 180310 G96 0.3+ 0.5+ 180316 658 0.8+ 0.8+ 180327 I52 0.4- 0.0 180310 G96 0.2- 0.2+ 180317 I52 0.2+ 0.6- 180327 I52 0.4- 0.0 180310 H21 0.4- 0.1+ 180317 I52 0.2+ 0.0 180328 I52 (5.0- 0.2+) 180310 H21 0.5- 0.1- 180317 I52 0.1- 0.0 180328 I52 1.6- 1.1- 180310 H21 0.3- 0.1- 180317 I52 0.7- 0.8- 180328 I52 1.0- 0.2- 180310 F51 0.3+ 0.0 180318 I52 0.6- 0.9- 180407 C51 0.5- 0.4+ 180310 F51 0.0 0.4- 180318 I52 0.7- 1.1- 180407 C51 1.7- 1.1+ 180313 033 0.0 0.5+ 180318 I52 0.5- 0.4- 180407 C51 0.5+ 0.3+ 180313 033 0.0 0.4+ 180318 I52 0.4- 0.2- 180407 C51 1.3+ 0.6+ 180313 033 0.3- 0.5+ 180319 I52 0.3- 0.1+ 180407 C51 0.1+ 0.3- 180313 033 0.1- 0.3+ 180319 I52 0.5+ 0.6+ 180407 C51 1.6+ 0.2+ 180313 033 0.0 0.4+ 180319 I52 0.7- 0.9- 180408 C51 0.6+ 1.2- 180313 033 0.4- 0.0 180319 I52 0.6- 0.4- 180408 C51 1.0+ 0.4+ 180313 I52 0.3- 0.3- 180319 711 0.4+ 0.1- 180408 C51 0.1- 1.0+ 180313 I52 0.4+ 0.0 180319 711 1.3- 0.9+ 180414 G37 0.4- 0.3+ 180313 I52 0.4- 1.3- 180319 711 0.3- 1.0+ 180414 G37 0.6- 0.4+ 180313 I52 0.5+ 0.2+ 180320 I52 1.0+ 0.7+ 180422 Q11 0.1- 0.4- 180313 K88 0.7+ 0.9- 180320 I52 0.3+ 0.2- 180422 Q11 0.1+ 0.5- 180313 K88 0.6+ 0.4- 180320 I52 0.3+ 1.1+ 180422 Q11 0.1+ 0.6- 180315 033 0.1- 0.4+ 180320 I52 0.3- 0.3+ 2018 April 20, 21:35:57 UT Orbital elements: C/2018 EF9 (Lemmon) Epoch 2018 June 11.0 TT = JDT 2458280.5 T 2018 May 23.09518 TT Sato q 1.5569617 (2000.0) P Q z + 0.001044 Peri. 72.59592 -0.30797334 +0.94267265 +/-0.0002325 Node 172.58336 -0.42264002 -0.25659440 e 0.9983748 Incl. 84.70495 +0.85236602 +0.21337193 From 100 observations 2018 Mar. 9-Apr. 14, mean residual 0".58. Epoch 2018 May 2.0 TT = JDT 2458240.5 T 2018 May 23.09389 TT Sato q 1.5569618 (2000.0) P Q z +0.0010464 Peri. 72.59498 -0.30798860 +0.94266791 +/-0.0002325 Node 172.58346 -0.42263564 -0.25659955 e 0.9983708 Incl. 84.70500 +0.85236268 +0.21338669 --