C/2025 R1 ( ATLAS )

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Updated on September 17, 2025

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

Orbital Elements Epoch 2025 Nov. 21.0 TT = JDT 2461000.5 T 2025 Nov. 24.02343 TT Pike q 1.9712480 (2000.0) P Q z +0.0204242 Peri. 77.70140 +0.39608649 -0.42101347 +/-0.0117011 Node 60.28273 -0.34756644 -0.89130539 e 0.9597388 Incl. 110.01964 +0.84989003 -0.16829247 From 114 observations 2025 Sept. 3-9, 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. 2025-R73. The magnitudes graphs are made with Comet for Windows.