C/2021 S4 ( Tsuchinshan )

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Updated on November 15, 2021

Profile Discovery Date September 29, 2021 Magnitude 20.5 mag Discoverer Hai-bin Zhao (XuYi station, Purple Mountain Observatory)

Orbital Elements Epoch 2024 Jan. 11.0 TT = JDT 2460320.5 T 2024 Jan. 1.86468 TT Rudenko q 6.6912318 (2000.0) P Q z +0.0061518 Peri. 72.85008 +0.20656491 -0.97801378 +/-0.0000000 Node 5.47481 +0.74418646 +0.13804304 e 0.9588371 Incl. 17.46584 +0.63523023 +0.15631114 From 42 observations 2021 Sept. 8-Oct. 13, mean residual 0".7.

Magnitudes Graph m1 = 6.5 + 5 log d + 10.0 log r

The orbital elements are published on M.P.E.C. 2021-U109. The magnitudes graphs are made with Comet for Windows.