C/2019 S4 ( Lemmon )

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Updated on March 29, 2020

Profile Discovery Date September 19, 2019 Magnitude 21.4 mag Discoverer D. Rankin (Mount Lemmon Survey) Pictures

Orbital Elements Epoch 2020 Apr. 21.0 TT = JDT 2458960.5 T 2020 Apr. 7.94405 TT Rudenko q 3.4416962 (2000.0) P Q z +0.0041600 Peri. 71.35586 +0.17416599 -0.41760502 +/-0.0000078 Node 63.16844 -0.12879824 -0.90750243 e 0.9856825 Incl. 92.02443 +0.97625674 -0.04522594 From 71 observations 2019 Sept. 17-2020 Feb. 20, mean residual 0".4.

Magnitudes Graph m1 = 11.5 + 5 log d + 10.0 log r

The orbital elements are published on M.P.E.C. 2020-F168. The magnitudes graphs are made with Comet for Windows.