# Hopkins 2025: From a Different Star: 3I/ATLAS in the Context of the Ōtautahi-Oxford Interstellar Object Population Model

> Matthew J. Hopkins, Rosemary C. Dorsey, John C. Forbes et al., 2025. 2 records on Mysteries Department cite it. 3I's expected properties before they were…

Source: https://mysteriesdept.com/sources/SRC0CSKBFSA7080/from-a-different-star-3i-atlas-in-the-context-of-the  
Publisher: Mysteries Department  
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[Sources](https://mysteriesdept.com/sources)[1I/'Oumuamua](https://mysteriesdept.com/mysteries/oumuamua)Hopkins 2025

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# From a Different Star: 3I/ATLAS in the Context of the Ōtautahi-Oxford Interstellar Object Population Model

Matthew J. Hopkins, Rosemary C. Dorsey, John C. Forbes et al., 2025. _The Astrophysical Journal Letters_.

Places 3I in a Gaia-based population model: its velocity and radiant are as expected, its speed implies an age above 7.6 billion years and a high water fraction, and it is very unlikely to share an origin with 1I or 2I. ApJL 990, L30.

**1I/'Oumuamua** Articledoi: **[10.3847/2041-8213/adfbf4](https://doi.org/10.3847/2041-8213/adfbf4)** Checked against the original0

## What it's used for here

3I's expected properties before they were measured; a successful prediction of its water content.

## Cited by on this site 2 records

[3I's age and composition make a common origin with 1I or 2I very unlikely, so three objects sample different…](https://mysteriesdept.com/mysteries/oumuamua/evidence/EVD0CSKCR2C417Q/3is-age-and-composition-make-a-common-origin-with-1i-or-2i)

Evidence

EVD

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

The mystery article

MYS

## Cite it

```
Hopkins, M. J., Dorsey, R. C., Forbes, J. C., Bannister, M. T., Lintott, C. J., & Leicester, B. (2025). From a Different Star: 3I/ATLAS in the Context of the Ōtautahi-Oxford Interstellar Object Population Model. The Astrophysical Journal Letters. https://doi.org/10.3847/2041-8213/adfbf4
```

[Read it free at doi.org](https://doi.org/10.3847/2041-8213/adfbf4)

Key

**SRC** 0CSKBFSA7080

Kind

Journal article

Rights

The publisher's

Kept

27 Oct 2026, for editors

Checked

Against the published article

Added by

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

The record

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[CSL-JSON](https://mysteriesdept.com/sources/SRC0CSKBFSA7080/from-a-different-star-3i-atlas-in-the-context-of-the/csl.json)