# 39 Herculis

> star in the constellation Hercules

**Wikidata**: [Q10940625](https://www.wikidata.org/wiki/Q10940625)  
**Source**: https://4ort.xyz/entity/39-herculis


## References

1. SIMBAD
2. Washington Double Star Catalog
3. Spectral classification of A-type spectroscopic binaries
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. Gaia Early Data Release 3
7. SB9: The ninth catalogue of spectroscopic binary orbits
8. Gaia Data Release 2
9. New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s)