C/2025 W2 ( ATLAS )

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Updated on December 22, 2025

Profile Discovery Date November 28, 2025 Magnitude 19.1 mag Discoverer Asteroid Terrestrial-Impact Last Alert System (ATLAS) search program

Orbital Elements Epoch 2025 Nov. 21.0 TT = JDT 2461000.5 T 2025 Dec. 7.83777 TT Pike q 1.4532484 (2000.0) P Q n 0.00709017 Peri. 41.03598 +0.04279526 +0.07159226 a 26.8347901 Node 90.84356 +0.43243546 -0.90048449 e 0.9458446 Incl. 94.70970 +0.90064873 +0.42895482 P 139 From 46 observations 2025 Oct. 26-Dec. 10, mean residual 0".5.

Magnitudes Graph m1 = 17.0 + 5 log d + 10.0 log r

The orbital elements are published on M.P.E.C. 2025-X127. The magnitudes graphs are made with Comet for Windows.