# Belyakov 2025: Palomar and Apache Point Spectrophotometry of Interstellar Comet 3I/ATLAS

> Matthew Belyakov, Christoffer Fremling, Matthew J. Graham, 2025. 1 records on Mysteries Department cite it. Belyakov, M., Fremling, C., Graham, M. et al.…

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# Palomar and Apache Point Spectrophotometry of Interstellar Comet 3I/ATLAS

Matthew Belyakov, Christoffer Fremling, Matthew J. Graham, 2025. _arXiv_.

Red slope 19 %/100 nm (420-700 nm), more neutral 6 %/100 nm (700-1000 nm); no C2 emission; e=6.15+/-0.01, q=1.357+/-0.001 au.

**3I/ATLAS** Preprint0

## Cited by on this site 1 record

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

The mystery article

MYS

## Cite it

```
Belyakov, M., Fremling, C., & Graham, M. J. (2025). Palomar and Apache Point Spectrophotometry of Interstellar Comet 3I/ATLAS. arXiv. https://arxiv.org/abs/2507.11720
```

[Read it free at arxiv.org](https://arxiv.org/abs/2507.11720)

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**SRC** 0DFPWGSEWJGP

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Preprint

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arXiv-nonexclusive

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2 Nov 2026, for editors

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