# EF Herculis

> Algol variable in the constellation Hercules

**Wikidata**: [Q87782133](https://www.wikidata.org/wiki/Q87782133)  
**Source**: https://4ort.xyz/entity/ef-herculis


## References

1. SIMBAD
2. VizieR
3. General Catalogue of Variable Stars, 3rd ed.
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. Physical properties and evolutionary states of EA-type eclipsing binaries observed by LAMOST
8. Gaia Data Release 2