# Pearce 2021: Boyajian's Star B: The Co-moving Companion to KIC 8462852 A

> Logan A. Pearce, Adam L. Kraus, Trent J. Dupuy et al., 2021. 6 records on Mysteries Department cite it. Establishes the binary companion that later…

Source: https://mysteriesdept.com/sources/SRC0D8E6Z5650DJ/boyajians-star-b-the-co-moving-companion-to-kic-8462852-a  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Sources](https://mysteriesdept.com/sources)[Tabby's star (KIC 8462852)](https://mysteriesdept.com/mysteries/tabbys-star)Pearce 2021

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# Boyajian's Star B: The Co-moving Companion to KIC 8462852 A

Logan A. Pearce, Adam L. Kraus, Trent J. Dupuy et al., 2021. _The Astrophysical Journal 909(2), 216_.

Keck adaptive-optics astrometry over five years shows that a faint star about 2 arcseconds east shares the primary's motion: a bound companion at 880 ± 10 au projected separation. Suggests that the companion may drive the bodies whose debris causes the dips.

**Tabby's star (KIC 8462852)** ArticleCopy of **[Keck adaptive-optics images of KIC 8462852 and its companion](https://mysteriesdept.com/mysteries/tabbys-star/artifacts/ART0D8E7S1A6B82/keck-adaptive-optics-images-of-kic-8462852-and-its-companion)** doi: **[10.3847/1538-4357/abdd33](https://doi.org/10.3847/1538-4357/abdd33)** Checked against the original0

## What it's used for here

Establishes the binary companion that later dynamical models use.

## Cited by on this site 6 records

[Comets driven onto star-grazing orbits by the bound M-dwarf companion through the eccentric Kozai-Lidov…](https://mysteriesdept.com/mysteries/tabbys-star/answers/ANS0D8E7D2G4BMZ/comets-driven-onto-star-grazing-orbits-by-the-bound-m-dwarf)

Answer

ANS

[Keck adaptive-optics images of KIC 8462852 and its companion](https://mysteriesdept.com/mysteries/tabbys-star/artifacts/ART0D8E7S1A6B82/keck-adaptive-optics-images-of-kic-8462852-and-its-companion)

ART

[Keck adaptive-optics images of KIC 8462852 and its companion: document](https://mysteriesdept.com/mysteries/tabbys-star/copies/CPY0D8E7S945ZM6/keck-adaptive-optics-images-of-kic-8462852-and-its-companion)

CPY

[The companion is bound, at 880 ± 10 au projected separation.](https://mysteriesdept.com/mysteries/tabbys-star/evidence/EVD0D8E7DAA3Y7C/the-companion-is-bound-at-880-10-au-projected-separation)

Evidence

EVD

[Keck astrometry confirms a bound M-dwarf companion](https://mysteriesdept.com/mysteries/tabbys-star/events/EVT0D8E75ZY7SD7/keck-astrometry-confirms-a-bound-m-dwarf-companion)

EVT

[Tabby's star (KIC 8462852)](https://mysteriesdept.com/mysteries/tabbys-star)

The mystery article

MYS

## Cite it

```
Pearce, L. A., Kraus, A. L., Dupuy, T. J., Mann, A. W., & Huber, D. (2021). Boyajian's Star B: The Co-moving Companion to KIC 8462852 A. The Astrophysical Journal 909(2), 216. https://doi.org/10.3847/1538-4357/abdd33
```

[Read it free at doi.org](https://doi.org/10.3847/1538-4357/abdd33)

Key

**SRC** 0D8E6Z5650DJ

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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[CSL-JSON](https://mysteriesdept.com/sources/SRC0D8E6Z5650DJ/boyajians-star-b-the-co-moving-companion-to-kic-8462852-a/csl.json)