C/2025 W2 ( ATLAS )

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Updated on December 9, 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. 7.84086 TT Pike q 1.4531832 (2000.0) P Q n 0.00720467 Peri. 41.03579 +0.04281140 +0.07151237 a 26.5497179 Node 90.83984 +0.43243450 -0.90048899 e 0.9452656 Incl. 94.70684 +0.90064843 +0.42895869 P 137 From 38 observations 2025 Oct. 26-Dec. 2, 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-X47. The magnitudes graphs are made with Comet for Windows.