C/2025 D1 ( Groeller )

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Updated on April 29, 2026

Profile Discovery Date February 20, 2025 Magnitude 20.6 mag Discoverer Hannes Groeller (Bok reflector at Kitt Peak) Pictures

Orbital Elements Perturbed ephemeris below is based on elements from MPEC 2026-G41. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2461920.50000 2461919.7459501 186.11254 312.90415 84.45935 e q a Epoch (TT) 1.0034009 14.1126258 2028/05/29.00

Magnitudes Graph m1 = 2.0 + 5 log d + 10.0 log r

The orbital elements are calculated using the Minor Planet & Comet Ephemeris Service. The magnitudes graphs are made with Comet for Windows.