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Hubble Space Telescope Observations of the Interstellar Interloper 3I/ATLAS
David Jewitt, Man-To Hui, Max Mutchler et al., 2025. arXiv.
Hubble images of 3I at 3.8 au: dust leaving the sunlit side, a weak tail, a dust mass-loss rate of 12 to 120 kg/s, and a nucleus radius below 2.8 km for an albedo of 0.04 and above 0.22 km if CO sublimation drives the coma.
What it's used for here
The first firm size limit on 3I.
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Research copy, for editors and curators. The work is arXiv-nonexclusive, so readers are sent to it. We keep this copy so the citation can be checked if the page changes or goes.
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1I/'Oumuamua
MYSThe mystery article
Cite it
Jewitt, D., Hui, M. T., Mutchler, M., Kim, Y., & Agarwal, J. (2025). Hubble Space Telescope Observations of the Interstellar Interloper 3I/ATLAS. arXiv. https://doi.org/10.3847/2041-8213/adf8d8
@article{jewitt2025hubble,
author = {Jewitt, David and Hui, Man-To and Mutchler, Max and Kim, Yoonyoung and Agarwal, Jessica},
title = {Hubble Space Telescope Observations of the Interstellar Interloper 3I/ATLAS},
journal = {arXiv},
year = {2025},
doi = {10.3847/2041-8213/adf8d8},
url = {https://arxiv.org/abs/2508.02934}
}TY - GEN TI - Hubble Space Telescope Observations of the Interstellar Interloper 3I/ATLAS AU - Jewitt, David AU - Hui, Man-To AU - Mutchler, Max AU - Kim, Yoonyoung AU - Agarwal, Jessica PY - 2025 JO - arXiv DO - 10.3847/2041-8213/adf8d8 UR - https://arxiv.org/abs/2508.02934 ER -
Jewitt, David et al.. “Hubble Space Telescope Observations of the Interstellar Interloper 3I/ATLAS.” arXiv (2025). https://doi.org/10.3847/2041-8213/adf8d8.