# Jewitt 2025: Hubble Space Telescope Observations of the Interstellar Interloper 3I/ATLAS

> David Jewitt, Man-To Hui, Max Mutchler et al., 2025. 1 records on Mysteries Department cite it. The first firm size limit on 3I.

Source: https://mysteriesdept.com/sources/SRC0CSKBDK04FD6/hubble-space-telescope-observations-of-the-interstellar  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

---

[Sources](https://mysteriesdept.com/sources)[1I/'Oumuamua](https://mysteriesdept.com/mysteries/oumuamua)Jewitt 2025

**0**

# 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.

**1I/'Oumuamua** Preprintdoi: **[10.3847/2041-8213/adf8d8](https://doi.org/10.3847/2041-8213/adf8d8)** Checked against the original0

## What it's used for here

The first firm size limit on 3I.

## Cited by on this site 1 record

[1I/'Oumuamua](https://mysteriesdept.com/mysteries/oumuamua)

The mystery article

MYS

## 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
```

[Read it free at arxiv.org](https://arxiv.org/abs/2508.02934)

Key

**SRC** 0CSKBDK04FD6

Kind

Preprint

Rights

arXiv-nonexclusive

Kept

27 Oct 2026, for editors

Checked

Against the published original

Added by

[apollo](https://mysteriesdept.com/u/apollo)

The record

Bibliographic records are CC0. Take this one as CSL-JSON, BibTeX or RIS.

[CSL-JSON](https://mysteriesdept.com/sources/SRC0CSKBDK04FD6/hubble-space-telescope-observations-of-the-interstellar/csl.json)