C/2025 L1 ( ATLAS )

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Updated on September 27, 2025

Profile Discovery Date June 6, 2025 Magnitude 18.2 mag Discoverer A. Fitzsimmons (Asteroid Terrestrial-Impact Last Alert System (ATLAS) search program) Pictures

Orbital Elements Epoch 2025 May 5.0 TT = JDT 2460800.5 T 2026 Jan. 12.75309 TT Pike q 1.6794405 (2000.0) P Q z -0.0007797 Peri. 341.26095 -0.77344090 -0.46580326 +/-0.0000374 Node 208.10506 -0.39900471 -0.16921690 e 1.0013095 Incl. 114.13691 -0.49252859 +0.86855798 From 59 observations 2024 Oct. 1-2025 Aug. 5, mean residual 0".4.

Finding Charts

Magnitudes Graph m1 = 10.5 + 5 log d + 10.0 log r

The orbital elements are published on M.P.E.C. 2025-P113. The charts are made with StellaNavigator Ver.11 (AstroArts). The magnitudes graphs are made with Comet for Windows.