C/2025 Q3 ( ATLAS )

Japanese version
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 Updated on January 31, 2026

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* Profile

Discovery Date August 20, 2025
Magnitude 19.5 mag
Discoverer Asteroid Terrestrial-Impact Last Alert System (ATLAS) search program

* Pictures

* Orbital Elements

Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Feb. 25.63622 TT                                 Alexandersen
q   2.1125483            (2000.0)            P               Q
z  +0.0012663      Peri.  218.45332     +0.47134150     -0.37095883
 +/-0.0000059      Node   233.14404     +0.82114963     -0.14643562
e   0.9973249      Incl.   90.18710     -0.32179260     -0.91703116
From 1189 observations 2025 Aug. 20-2026 Jan. 12, mean residual 0".4.

* Finding Charts

* Magnitudes Graph

        m1 = 10.5 + 5 log d + 13.0 log r

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The orbital elements are published on M.P.E.C. 2026-A90.
The charts are made with StellaNavigator Ver.11 (AstroArts).
The magnitudes graphs are made with Comet for Windows.

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