C/2025 A4 ( PanSTARRS )

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Updated on August 10, 2025

Profile Discovery Date January 3, 2025 Magnitude 21.0 mag Discoverer Pan-STARRS 2 telescope (Haleakala) Pictures

Orbital Elements Epoch 2025 May 5.0 TT = JDT 2460800.5 T 2025 Jan. 13.14547 TT Pike q 3.8242150 (2000.0) P Q n 0.02683313 Peri. 102.79522 -0.85253179 -0.15857168 a 11.0498200 Node 69.91330 -0.13602131 -0.85272606 e 0.6539116 Incl. 32.02549 +0.50466598 -0.49770804 P 36.7 From 101 observations 2024 Dec. 21-2025 June 17, mean residual 0".5.

Magnitudes Graph m1 = 11.5 + 5 log d + 10.0 log r

The orbital elements are published on M.P.E.C. 2025-M120. The magnitudes graphs are made with Comet for Windows.