509P/Catalina (2026)

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Updated on October 1, 2025

Profile Designation 509P/2024 T6 Recovery Date October 23 and October 3, 2024 Magnitude 21.7 mag and 21.8 mag Recoverer Mt. Lemmon, T. Kobayashi, Pan-STARRS 1 telescope (Haleakala) Pictures

Orbital Elements Epoch 2025 May 5.0 TT = JDT 2460800.5 T 2026 Mar. 20.22884 TT Pike q 3.6925897 (2000.0) P Q n 0.05297047 Peri. 180.15555 -0.09343691 -0.98441388 a 7.0217738 Node 275.20756 +0.91362976 -0.02530600 e 0.4741229 Incl. 8.60435 +0.39566426 -0.17403715 P 18.6 From 343 observations 2006 Oct. 19-2025 July 28, mean residual 0".9.

Magnitudes Graph m1 = 8.5 + 5 log d + 15.0 log r * Gray curve is: m1 = 6.5 + 5 log d + 15.0 log r

The orbital elements are published on M.P.E.C. 2025-P121. The magnitudes graphs are made with Comet for Windows.