C/2021 C4 ( ATLAS )

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Updated on December 11, 2022

Profile Discovery Date February 12, 2021 Magnitude 18.7 mag Discoverer Asteroid Terrestrial-Impact Last Alert System (ATLAS) search program Pictures

Orbital Elements Epoch 2021 Jan. 26.0 TT = JDT 2459240.5 T 2021 Jan. 17.00605 TT Rudenko q 4.5041478 (2000.0) P Q z +0.0002326 Peri. 320.22648 -0.63755162 -0.74888104 +/-0.0000044 Node 194.27834 -0.37409237 +0.09572190 e 0.9989523 Incl. 132.83972 -0.67348559 +0.65575492 From 196 observations 2021 Feb. 12-2022 Jan. 1, mean residual 0".6.

Magnitudes Graph m1 = 1.5 + 5 log d + 20.0 log r

The orbital elements are published on M.P.E.C. 2022-A21. The magnitudes graphs are made with Comet for Windows.