C/2025 A6 ( Lemmon )

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Updated on January 14, 2026

Profile Discovery Date January 3, 2025 Magnitude 21.6 mag Discoverer D. C. Fuls (Mt. Lemmon survey) Pictures

Orbital Elements Epoch 2025 Nov. 21.0 TT = JDT 2461000.5 T 2025 Nov. 8.53848 TT Pike q 0.5299011 (2000.0) P Q z +0.0081850 Peri. 132.96792 +0.77201202 -0.29457821 +/-0.0000020 Node 108.09789 -0.59888048 -0.63397425 e 0.9956628 Incl. 143.66265 +0.21293101 -0.71505268 From 1575 observations 2024 Nov. 12-2025 Nov. 19, mean residual 0".8.

Finding Charts

Magnitudes Graph m1 = 8.5 + 5 log d + 15.0 log r [ ,-85] ( - 2025 Aug. 15) m1 = 7.0 + 5 log d + 10.0 log r [-85, 0] (2025 Aug. 15 - 2025 Nov. 8) m1 = 5.0 + 5 log d + 2.5 log r [ 0, 51] (2025 Nov. 8 - 2025 Dec. 29) m1 = 4.0 + 5 log d + 15.0 log r [ 51, ] (2025 Dec. 29 - )

The orbital elements are published on M.P.E.C. 2025-Y51. The charts are made with StellaNavigator Ver.11 (AstroArts). The magnitudes graphs are made with Comet for Windows.