C/2023 H5 ( Lemmon )

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Updated on December 22, 2025

Profile Discovery Date April 19, 2023 Magnitude 20.2 mag Discoverer Mt. Lemmon Survey Pictures

Orbital Elements Epoch 2025 Nov. 21.0 TT = JDT 2461000.5 T 2025 June 30.35149 TT Pike q 4.3126590 (2000.0) P Q z -0.0001079 Peri. 60.11082 -0.42515349 +0.83583546 +/-0.0000005 Node 159.47608 -0.07953306 -0.41672982 e 1.0004654 Incl. 97.85461 +0.90162021 +0.35737283 From 2554 observations 2022 Dec. 1-2025 Dec. 15, mean residual 0".5.

Finding Charts

Magnitudes Graph m1 = 2.5 + 5 log d + 15.0 log r [ ,-360] ( - 2024 July 5) m1 = 6.5 + 5 log d + 10.0 log r(t + 120) [-360, ] (2024 July 5 - )

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.