L. Denneau

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About

L. Denneau is a leading figure in planetary astronomy and time-domain astrophysics, best known for his pivotal role in the Asteroid Terrestrial-impact Last Alert System (ATLAS). His research focuses on the detection and characterization of small solar system bodies, interstellar objects, and cometary activity. Denneau’s major contributions include the discovery and photometric analysis of interstellar comet 3I/ATLAS (C/2025 N1), providing critical light curves and color data that help constrain the physical properties of these rare visitors from beyond our solar system. He also identified new or increased cometary activity in the Centaur (2060) 95P/Chiron, demonstrating ATLAS’s sensitivity to subtle changes in distant, icy bodies. His work on 3I/ATLAS alone has garnered over 10 citations, reflecting its immediate impact on the study of interstellar objects. Denneau’s achievements highlight the power of robotic survey networks in real-time planetary defense and solar system exploration, making him a key contributor to our understanding of dynamic and transient celestial phenomena.