# 30 Herculis

> binary star system in the constellation Hercules

**Wikidata**: [Q2839250](https://www.wikidata.org/wiki/Q2839250)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/G_Herculis)  
**Source**: https://4ort.xyz/entity/30-herculis


## References

1. SIMBAD
2. SB9: The ninth catalogue of spectroscopic binary orbits
3. The Perkins catalog of revised MK types for the cooler stars
4. Gaia Data Release 3
5. Freebase Data Dumps. 2013
6. Source
7. Catalogue of Stellar Photometry in Johnson's 11-color system
8. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
9. Gaia Early Data Release 3
10. Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data
11. Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era
12. The chemical composition of red giants. I. Dredge-up in the M and MS stars
13. Stellar Iron Abundances at the Galactic Center
14. The First Stellar Abundance Measurements in the Galactic Center: The M Supergiant IRS 7