# Q66547997
**Wikidata**: [Q66547997](https://www.wikidata.org/wiki/Q66547997)  
**Source**: https://4ort.xyz/entity/q66547997


## References

1. SIMBAD
2. MK classification of 142 visual binaries
3. Washington Double Star Catalog
4. Gaia Data Release 2
5. Validation of the new Hipparcos reduction
6. SB9: The ninth catalogue of spectroscopic binary orbits
7. Statistics of spectroscopic sub-systems in visual multiple stars
8. New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s)