# EM Hydrae

> RR Lyrae variable star in the constellation Hydra

**Wikidata**: [Q93384312](https://www.wikidata.org/wiki/Q93384312)  
**Source**: https://4ort.xyz/entity/em-hydrae


## References

1. SIMBAD
2. Gaia Data Release 3
3. Discovery of ~9,000 new RR Lyrae in the southern Catalina surveys
4. Analysis of RR Lyrae Stars in the Northern Sky Variability Survey
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. Gaia Early Data Release 3
7. Gaia Data Release 2