C/2025 R1 ( ATLAS )

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Updated on July 12, 2026

Profile Discovery Date September 3, 2025 Magnitude 19.3 mag Discoverer Asteroid Terrestrial-Impact Last Alert System (ATLAS) search program Pictures

Orbital Elements Epoch 2026 June 9.0 TT = JDT 2461200.5 T 2025 Nov. 23.34273 TT Pike q 1.9752103 (2000.0) P Q z +0.0059903 Peri. 77.55396 +0.39720229 -0.41817610 +/-0.0000024 Node 60.39922 -0.34455851 -0.89298473 e 0.9881680 Incl. 110.02525 +0.85059378 -0.16645428 From 388 observations 2025 Sept. 3-2026 June 18, mean residual 0".5.

Magnitudes Graph m1 = 13.0 + 5 log d + 10.0 log r

The orbital elements are published on M.P.E.C. 2026-N12. The magnitudes graphs are made with Comet for Windows.