C/2025 Y3 ( PanSTARRS )

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Updated on January 23, 2026

Profile Discovery Date December 27, 2025 Magnitude 21.6 mag Discoverer Pan-STARRS 1 telescope (Haleakala)

Orbital Elements Epoch 2025 Nov. 21.0 TT = JDT 2461000.5 T 2026 Jan. 13.70289 TT Pike q 2.2273067 (2000.0) P Q z -0.0003873 Peri. 219.38381 -0.04499016 +0.02678138 +/-0.0004270 Node 272.96733 +0.96033279 -0.27422373 e 1.0008627 Incl. 89.54978 -0.27520325 -0.96129293 From 27 observations 2025 Dec. 13-2026 Jan. 15, mean residual 0".3.

Magnitudes Graph m1 = 16.5 + 5 log d + 10.0 log r

The orbital elements are published on M.P.E.C. 2026-B128. The magnitudes graphs are made with Comet for Windows.