C/2021 A4 ( NEOWISE )

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Updated on September 18, 2021

Profile Discovery Date January 3, 2021 Magnitude 20 mag Discoverer Near-Earth Object Wide-field Infrared Survey Explorer Pictures

Orbital Elements Epoch 2021 Mar. 7.0 TT = JDT 2459280.5 T 2021 Mar. 20.03314 TT Rudenko q 1.1455002 (2000.0) P Q z +0.0232314 Peri. 204.66152 -0.42560733 +0.51814429 +/-0.0000185 Node 307.08408 +0.90438244 +0.21562206 e 0.9733885 Incl. 111.57097 -0.03083509 -0.82766758 From 709 observations 2021 Jan. 3-July 7, mean residual 1".1.

Finding Charts

Magnitudes Graph m1 = 11.0 + 5 log d + 25.0 log r(t - 15)

The orbital elements are published on M.P.E.C. 2021-R75. The charts are made with StellaNavigator Ver.10 (AstroArts). The magnitudes graphs are made with Comet for Windows.