# Hallatt 2020: The Dynamics of Interstellar Asteroids and Comets within the Galaxy: An Assessment of Local Candidate Source Regions for 1I/'Oumuamua and 2I/Borisov

> Tim Hallatt, Paul Wiegert, 2020. 4 records on Mysteries Department cite it. Why the traceback cannot name a single home star.

Source: https://mysteriesdept.com/sources/SRC0CSKBMNJ68BM/the-dynamics-of-interstellar-asteroids-and-comets-within-the  
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[Sources](https://mysteriesdept.com/sources)[1I/'Oumuamua](https://mysteriesdept.com/mysteries/oumuamua)Hallatt 2020

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# The Dynamics of Interstellar Asteroids and Comets within the Galaxy: An Assessment of Local Candidate Source Regions for 1I/'Oumuamua and 2I/Borisov

Tim Hallatt, Paul Wiegert, 2020. _The Astronomical Journal_.

Shows that scattering by the Galactic disc limits any back-integration to about 15 pc accuracy at 10 million years and 400 pc at 100 million, so a home star can only be named statistically; finds the origin likely within 1 kpc and the Carina and Columba moving groups the most plausible source regions. AJ 159, 147.

**1I/'Oumuamua** Articledoi: **[10.3847/1538-3881/ab7336](https://doi.org/10.3847/1538-3881/ab7336)** Checked against the original0

## What it's used for here

Why the traceback cannot name a single home star.

## Cited by on this site 4 records

[Carina and Columba are the most plausible source regions, though only statistically.](https://mysteriesdept.com/mysteries/oumuamua/evidence/EVD0CSKCHQ861CF/carina-and-columba-are-the-most-plausible-source-regions)

Evidence

EVD

[Galactic scattering limits traceback accuracy to about 15 pc at 10 million years.](https://mysteriesdept.com/mysteries/oumuamua/evidence/EVD0CSKCK640HNX/galactic-scattering-limits-traceback-accuracy-to-about-15-pc)

Evidence

EVD

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

The mystery article

MYS

[Where did 'Oumuamua come from?](https://mysteriesdept.com/mysteries/oumuamua/questions/QST0CSKC04R56X5/where-did-oumuamua-come-from)

Question

QST

## Cite it

```
Hallatt, T., & Wiegert, P. (2020). The Dynamics of Interstellar Asteroids and Comets within the Galaxy: An Assessment of Local Candidate Source Regions for 1I/'Oumuamua and 2I/Borisov. The Astronomical Journal. https://doi.org/10.3847/1538-3881/ab7336
```

[Read it free at doi.org](https://doi.org/10.3847/1538-3881/ab7336)

Key

**SRC** 0CSKBMNJ68BM

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

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