# DG Hydrae

> RR Lyrae variable star in the constellation Hydra

**Wikidata**: [Q93266502](https://www.wikidata.org/wiki/Q93266502)  
**Source**: https://4ort.xyz/entity/dg-hydrae


## References

1. SIMBAD
2. Delta-S metallicities of 35 field RR Lyrae stars and the nature of BB Virginis and AR Herculis
3. Gaia Data Release 3
4. RR Lyrae stars in the GCVS observed by the Qatar Exoplanet Survey
5. Gaia Data Release 2
6. Analysis of RR Lyrae Stars in the Northern Sky Variability Survey
7. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
8. Gaia Early Data Release 3