# Eta Ophiuchi A
**Wikidata**: [Q66477234](https://www.wikidata.org/wiki/Q66477234)  
**Source**: https://4ort.xyz/entity/eta-ophiuchi-a


## References

1. SIMBAD
2. General catalogue of AP and AM stars
3. Scanner studies of composite spectra I. Dwarfs
4. Washington Double Star Catalog
5. The Tycho-2 catalogue of the 2.5 million brightest stars
6. The Tycho double star catalogue