# Cordiner 2026: Isotopic Evidence for a Cold and Distant Origin of the Interstellar Object 3I/ATLAS

> Martin Cordiner, Nathan X. Roth, Marco Micheli, 2026. 6 records on Mysteries Department cite it. Cordiner, M., Roth, N., Micheli, M. et al. 2026.…

Source: https://mysteriesdept.com/sources/SRC0DFPWGSFXVMV/isotopic-evidence-for-a-cold-and-distant-origin-of-the  
Publisher: Mysteries Department  
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[Sources](https://mysteriesdept.com/sources)[3I/ATLAS](https://mysteriesdept.com/mysteries/3i-atlas)Cordiner 2026

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# Isotopic Evidence for a Cold and Distant Origin of the Interstellar Object 3I/ATLAS

Martin Cordiner, Nathan X. Roth, Marco Micheli, 2026. _Nature 655, 870-874_.

JWST/NIRSpec: water D/H=(0.95+/-0.06)%; 12C/13C 141-191 (CO2) and 123-172 (CO); formation <~30 K, metal-poor; accreted ~10-12 Gyr ago.

**3I/ATLAS** Articledoi: **[10.1038/s41586-026-10771-6](https://doi.org/10.1038/s41586-026-10771-6)** 0

## Cited by on this site 6 records

[Carbon isotopes date the ices to 10 to 12 billion years ago](https://mysteriesdept.com/mysteries/3i-atlas/evidence/EVD0DFQ52T02NDX/carbon-isotopes-date-the-ices-to-10-to-12-billion-years-ago)

Evidence

EVD

[JWST: water D/H near 1 per cent and high carbon-13 ratios](https://mysteriesdept.com/mysteries/3i-atlas/evidence/EVD0DFQ3PX0VGG4/jwst-water-d-h-near-1-per-cent-and-high-carbon-13-ratios)

Evidence

EVD

[JWST measures the deuterium and carbon isotopes](https://mysteriesdept.com/mysteries/3i-atlas/events/EVT0DFQ70AS6MTH/jwst-measures-the-deuterium-and-carbon-isotopes)

EVT

[Nature: older than the Sun, from a cold birthplace](https://mysteriesdept.com/mysteries/3i-atlas/events/EVT0DFQ70AS2M9D/nature-older-than-the-sun-from-a-cold-birthplace)

EVT

[Martin A. Cordiner](https://mysteriesdept.com/mysteries/3i-atlas/people/FIG0DFQ70ARS7G7/martin-a-cordiner)

FIG

[3I/ATLAS](https://mysteriesdept.com/mysteries/3i-atlas)

The mystery article

MYS

## Cite it

```
Cordiner, M., Roth, N. X., & Micheli, M. (2026). Isotopic Evidence for a Cold and Distant Origin of the Interstellar Object 3I/ATLAS. Nature 655, 870-874. https://doi.org/10.1038/s41586-026-10771-6
```

[Read it free at arxiv.org](https://arxiv.org/abs/2603.06911)

Key

**SRC** 0DFPWGSFXVMV

Kind

Journal article

Rights

arXiv-nonexclusive

Kept

2 Nov 2026, for editors

Added by

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

The record

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