# Eta Orionis A
**Wikidata**: [Q138411082](https://www.wikidata.org/wiki/Q138411082)  
**Source**: https://4ort.xyz/entity/eta-orionis-a


## References

1. SIMBAD
2. Rotational velocities and spectral types for a sample of binary systems
3. Washington Double Star Catalog
4. Gaia Data Release 3
5. The Tycho double star catalogue
6. Gaia Early Data Release 3