C/2019 S4 ( Lemmon )

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Updated on December 11, 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. 7.93803 TT Rudenko q 3.4417392 (2000.0) P Q z +0.0041414 Peri. 71.35470 +0.17418013 -0.41759123 +/-0.0000012 Node 63.16895 -0.12878200 -0.90750966 e 0.9857464 Incl. 92.02497 +0.97625636 -0.04520822 From 219 observations 2019 Sept. 17-2020 Oct. 16, mean residual 0".5.

Magnitudes Graph m1 = 1.7 + 5 log d + 25.0 log r(t - 100)

The orbital elements are published on M.P.E.C. 2020-U96. The magnitudes graphs are made with Comet for Windows.