# Opitom 2025: Snapshot of a new interstellar comet: 3I/ATLAS has a red and featureless spectrum

> Cyrielle Opitom, Colin Snodgrass, Emmanuel Jehin, 2025. 3 records on Mysteries Department cite it. Opitom, C., Snodgrass, C., Jehin, E. et al. 2025.…

Source: https://mysteriesdept.com/sources/SRC0DFPWGSEXEFA/snapshot-of-a-new-interstellar-comet-3i-atlas-has-a-red-and  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Sources](https://mysteriesdept.com/sources)[3I/ATLAS](https://mysteriesdept.com/mysteries/3i-atlas)Opitom 2025

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# Snapshot of a new interstellar comet: 3I/ATLAS has a red and featureless spectrum

Cyrielle Opitom, Colin Snodgrass, Emmanuel Jehin, 2025. _MNRAS Letters 544, L31-L36_.

VLT/MUSE on 2025-07-03 at 4.47 au: red coma, slope (18+/-4)%/1000 A; no C2, NH2, CN or [OI] detected; coma entirely dusty.

**3I/ATLAS** Articledoi: **[10.1093/mnrasl/slaf095](https://doi.org/10.1093/mnrasl/slaf095)** 0

## Cited by on this site 3 records

[First spectrum: a red, all-dust coma](https://mysteriesdept.com/mysteries/3i-atlas/events/EVT0DFQ70AS016Q/first-spectrum-a-red-all-dust-coma)

EVT

[Cyrielle Opitom](https://mysteriesdept.com/mysteries/3i-atlas/people/FIG0DFQ70ARXJ47/cyrielle-opitom)

FIG

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

The mystery article

MYS

## Cite it

```
Opitom, C., Snodgrass, C., & Jehin, E. (2025). Snapshot of a new interstellar comet: 3I/ATLAS has a red and featureless spectrum. MNRAS Letters 544, L31-L36. https://doi.org/10.1093/mnrasl/slaf095
```

[Read it free at arxiv.org](https://arxiv.org/abs/2507.05226)

Key

**SRC** 0DFPWGSEXEFA

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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