C/2025 A6 ( Lemmon )

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Updated on May 6, 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. 8.53784 TT Pike q 0.5299135 (2000.0) P Q z +0.0081172 Peri. 132.96579 +0.77202919 -0.29454651 +/-0.0000007 Node 108.09827 -0.59884943 -0.63400087 e 0.9956986 Incl. 143.66308 +0.21295606 -0.71504214 From 1828 observations 2024 Nov. 12-2026 Apr. 26, mean residual 1".1.

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. 2026-H170. The charts are made with StellaNavigator Ver.11 (AstroArts). The magnitudes graphs are made with Comet for Windows.