New Gemini and JWST data show 450P/LONEOS has a 1.8 km nucleus, CO2 gas production of ~7e24 molec/s, water ice absorption, and activity consistent with CO2 release from crystallizing amorphous ice.
Centaurs , year = 2025, editor =
2 Pith papers cite this work. Polarity classification is still indexing.
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astro-ph.EP 2years
2026 2representative citing papers
The paper estimates 3I/ATLAS lost 1.05-6.56 meters of surface material (0.10-1.13% of its mass, or 10^9-10^10 kg) during its solar system passage based on observed production rates.
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JWST and Gemini Observations of the Active Centaur 450P/LONEOS: Nucleus and Coma Characterizations
New Gemini and JWST data show 450P/LONEOS has a 1.8 km nucleus, CO2 gas production of ~7e24 molec/s, water ice absorption, and activity consistent with CO2 release from crystallizing amorphous ice.