# DL Herculis

> RR Lyrae variable star in the constellation Hercules

**Wikidata**: [Q90618992](https://www.wikidata.org/wiki/Q90618992)  
**Source**: https://4ort.xyz/entity/dl-herculis


## References

1. SIMBAD
2. VizieR
3. Spectral class and metal-abundance index determination for 20 RR Lyrae stars at light maximum
4. ROTSE all-sky surveys for variable stars. I. Test fields
5. Probing the outer galactic halo with RR Lyrae from the Catalina surveys
6. General Catalogue of Variable Stars, 3rd ed.
7. Gaia Data Release 2
8. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
9. Gaia Early Data Release 3
10. Gaia Data Release 3