C/2019 S4 ( Lemmon )

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Updated on August 15, 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. 7.94180 TT Rudenko q 3.4417259 (2000.0) P Q z +0.0041449 Peri. 71.35548 +0.17417503 -0.41759262 +/-0.0000012 Node 63.16900 -0.12879460 -0.90750835 e 0.9857346 Incl. 92.02503 +0.97625561 -0.04522173 From 137 observations 2019 Sept. 17-2020 Aug. 3, mean residual 0".4.

Magnitudes Graph m1 = 2.0 + 5 log d + 25.0 log r(t - 70)

The orbital elements are published on M.P.E.C. 2020-P19. The magnitudes graphs are made with Comet for Windows.