# V540 Hydrae

> RR Lyrae variable star in the constellation Hydra

**Wikidata**: [Q93130910](https://www.wikidata.org/wiki/Q93130910)  
**Source**: https://4ort.xyz/entity/v540-hydrae


## References

1. SIMBAD
2. Gaia Data Release 3
3. Discovery of ~9,000 new RR Lyrae in the southern Catalina surveys
4. Gaia Early Data Release 3
5. Gaia Data Release 2