# Lisse 2025: SPHEREx Pre-Perihelion Mapping of H2O, CO2, and CO in Interstellar Object 3I/ATLAS

> Carey M. Lisse, Yoonsoo P. Bach, Brendan P. Crill, 2025. 3 records on Mysteries Department cite it. Lisse, C., Bach, Y., Crill, B. et al. 2025. SPHEREx…

Source: https://mysteriesdept.com/sources/SRC0DFPWGSFKWX5/spherex-pre-perihelion-mapping-of-h2o-co2-and-co-in  
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)Lisse 2025

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# SPHEREx Pre-Perihelion Mapping of H2O, CO2, and CO in Interstellar Object 3I/ATLAS

Carey M. Lisse, Yoonsoo P. Bach, Brendan P. Crill, 2025. _arXiv_.

SPHEREx 2025-08-01/15: Q(H2O)=3.2e26, Q(CO2)=1.6e27, Q(13CO2)=1.3e25, Q(CO)=1.0e26 /s; CO2 atmosphere >=4.2e5 km; nucleus radius <2.5 km.

**3I/ATLAS** Preprint0

## Cited by on this site 3 records

[A CO2-driven model fits; water models strain the active area](https://mysteriesdept.com/mysteries/3i-atlas/evidence/EVD0DFQ4MJGW244/a-co2-driven-model-fits-water-models-strain-the-active-area)

Evidence

EVD

[Two telescopes put the radius below 2.8 km](https://mysteriesdept.com/mysteries/3i-atlas/evidence/EVD0DFQ48E606F6/two-telescopes-put-the-radius-below-2-8-km)

Evidence

EVD

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

The mystery article

MYS

## Cite it

```
Lisse, C. M., Bach, Y. P., & Crill, B. P. (2025). SPHEREx Pre-Perihelion Mapping of H2O, CO2, and CO in Interstellar Object 3I/ATLAS. arXiv. https://arxiv.org/abs/2512.07318
```

[Read it free at arxiv.org](https://arxiv.org/abs/2512.07318)

Key

**SRC** 0DFPWGSFKWX5

Kind

Preprint

Rights

arXiv-nonexclusive

Kept

2 Nov 2026, for editors

Added by

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

The record

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