# Harp 2019: Radio SETI observations of the interstellar object 'Oumuamua

> Gerald R. Harp, Jon Richards, Peter Jenniskens et al., 2019. 1 records on Mysteries Department cite it. The second radio search; the preprint corrects an…

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# Radio SETI observations of the interstellar object 'Oumuamua

Gerald R. Harp, Jon Richards, Peter Jenniskens et al., 2019. _Acta Astronautica_.

Allen Telescope Array observations between 1 and 10 GHz in late November and early December 2017 found no signal, with transmitter limits of about 10 W at 1 GHz and 100 W at 7 GHz in clean bands and 3 kW in bands crowded by satellites. Acta Astronautica 155, 51-54.

**1I/'Oumuamua** Articledoi: **[10.1016/j.actaastro.2018.10.046](https://doi.org/10.1016/j.actaastro.2018.10.046)** Checked against the original0

## What it's used for here

The second radio search; the preprint corrects an earlier unit error.

## Cited by on this site 1 record

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

The mystery article

MYS

## Cite it

```
Harp, G. R., Richards, J., Jenniskens, P., Shostak, S., & Tarter, J. C. (2019). Radio SETI observations of the interstellar object 'Oumuamua. Acta Astronautica. https://doi.org/10.1016/j.actaastro.2018.10.046
```

[Read it free at doi.org](https://doi.org/10.1016/j.actaastro.2018.10.046)

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**SRC** 0CSKB59C1293

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Journal article

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27 Oct 2026, for editors

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