# Guzik 2020: Initial characterization of interstellar comet 2I/Borisov

> Piotr Guzik, Michał Drahus, Krzysztof Rusek et al., 2020. 3 records on Mysteries Department cite it. The comparison object that behaved as a comet should.

Source: https://mysteriesdept.com/sources/SRC0CSKBCBY5WWM/initial-characterization-of-interstellar-comet-2i-borisov  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Sources](https://mysteriesdept.com/sources)[1I/'Oumuamua](https://mysteriesdept.com/mysteries/oumuamua)Guzik 2020

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# Initial characterization of interstellar comet 2I/Borisov

Piotr Guzik, Michał Drahus, Krzysztof Rusek et al., 2020. _Nature Astronomy_.

Gemini North and William Herschel observations of the second interstellar object, discovered on 30 August 2019: an extended coma, a tail, a reddish colour and a nucleus of about a kilometre, all like ordinary Solar System comets. Nature Astronomy 4, 53-57.

**1I/'Oumuamua** Articledoi: **[10.1038/s41550-019-0931-8](https://doi.org/10.1038/s41550-019-0931-8)** Checked against the original0

## What it's used for here

The comparison object that behaved as a comet should.

## Cited by on this site 3 records

[2I/Borisov was an ordinary active comet.](https://mysteriesdept.com/mysteries/oumuamua/evidence/EVD0CSKCQJR31NX/2i-borisov-was-an-ordinary-active-comet)

Evidence

EVD

[2I/Borisov is found and is plainly a comet](https://mysteriesdept.com/mysteries/oumuamua/events/EVT0CSKBXPM1SNH/2i-borisov-is-found-and-is-plainly-a-comet)

EVT

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

The mystery article

MYS

## Cite it

```
Guzik, P., Drahus, M., Rusek, K., Waniak, W., Cannizzaro, G., & Pastor-Marazuela, I. (2020). Initial characterization of interstellar comet 2I/Borisov. Nature Astronomy. https://doi.org/10.1038/s41550-019-0931-8
```

[Read it free at doi.org](https://doi.org/10.1038/s41550-019-0931-8)

Key

**SRC** 0CSKBCBY5WWM

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

Bibliographic records are CC0. Take this one as CSL-JSON, BibTeX or RIS.

[CSL-JSON](https://mysteriesdept.com/sources/SRC0CSKBCBY5WWM/initial-characterization-of-interstellar-comet-2i-borisov/csl.json)