C/2025 Q3 ( ATLAS )

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Updated on December 22, 2025

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. 25.63620 TT Pike q 2.1125481 (2000.0) P Q z +0.0012688 Peri. 218.45329 +0.47134045 -0.37095985 +/-0.0000091 Node 233.14406 +0.82115057 -0.14643431 e 0.9973197 Incl. 90.18697 -0.32179175 -0.91703096 From 980 observations 2025 Aug. 20-Dec. 17, mean residual 0".4.

Finding Charts

Magnitudes Graph m1 = 10.5 + 5 log d + 13.0 log r

The orbital elements are published on M.P.E.C. 2025-Y51. The charts are made with StellaNavigator Ver.11 (AstroArts). The magnitudes graphs are made with Comet for Windows.