# Eta Herculis

> star in the constellation Hercules

**Wikidata**: [Q3059196](https://www.wikidata.org/wiki/Q3059196)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Eta_Herculis)  
**Source**: https://4ort.xyz/entity/eta-herculis


## References

1. SIMBAD
2. The Perkins catalog of revised MK types for the cooler stars
3. Gaia Data Release 3
4. Freebase Data Dumps. 2013
5. Catalogue of Stellar Photometry in Johnson's 11-color system
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants
8. Gaia Early Data Release 3
9. Gaia Data Release 2. The catalogue of radial velocity standard stars
10. Chemical abundances for cyanogen-weak giants
11. Assessment of [Fe/H] determinations for FGK stars in spectroscopic surveys
12. Fundamental Parameters of 87 Stars from the Navy Precision Optical Interferometer
13. Stellar parameters and chemical abundances of 223 evolved stars with and without planets