C/2021 A4 ( NEOWISE )

Japanese version
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Updated on February 21, 2021

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* 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. 19.99862 TT                                 Rudenko
q   1.1457078            (2000.0)            P               Q
z  +0.0220202      Peri.  204.62581     -0.42575256     +0.51802388
 +/-0.0005605      Node   307.07682     +0.90433411     +0.21620563
e   0.9747713      Incl.  111.58469     -0.03024184     -0.82759071
From 149 observations 2021 Jan. 3-28, mean residual 0".6.

* Finding Charts

* Magnitudes Graph

        m1 = 12.5 + 5 log d + 30.0 log r

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The orbital elements are published on M.P.E.C. 2021-B143.
The charts are made with StellaNavigator Ver.10 (AstroArts).
The magnitudes graphs are made with Comet for Windows.

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Copyright(C) Seiichi Yoshida (comet@aerith.net). All rights reserved.