C/2023 H3 ( PanSTARRS )

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Updated on August 10, 2025

Profile Discovery Date April 28, 2023 Magnitude 20.8 mag Discoverer Pan-STARRS 2 telescope (Haleakala)

Orbital Elements Epoch 2025 May 5.0 TT = JDT 2460800.5 T 2024 Feb. 18.31734 TT Pike q 5.2316604 (2000.0) P Q n 0.01961266 Peri. 193.26315 -0.36899908 +0.92874742 a 13.6179500 Node 55.09389 -0.84872374 -0.32109485 e 0.6158261 Incl. 2.48852 -0.37882409 -0.18527364 P 50.3 From 69 observations 2023 Mar. 16-2025 July 22, mean residual 0".3.

Magnitudes Graph m1 = 9.5 + 5 log d + 10.0 log r

The orbital elements are published on M.P.E.C. 2025-O159. The magnitudes graphs are made with Comet for Windows.