C/2018 EF9 ( Lemmon )

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Updated on April 21, 2018

Profile Discovery Date March 9, 2018 Magnitude 20.7 mag Discoverer A. R. Gibbs (Mount Lemmon)

Orbital Elements Epoch 2018 June 11.0 TT = JDT 2458280.5 T 2018 May 23.08772 TT MPCW q 1.5570278 (2000.0) P Q z +0.0009547 Peri. 72.59104 -0.30804919 +0.94264994 +/-0.0002108 Node 172.58426 -0.42259717 -0.25660882 e 0.9985134 Incl. 84.70671 +0.85235986 +0.21345490 From 98 observations 2018 Mar. 9-Apr. 14, mean residual 0".5.

Magnitudes Graph m1 = 17.0 + 5 log d + 10.0 log r

The orbital elements are published on M.P.E.C. 2018-H55. The magnitudes graphs are made with Comet for Windows.