# BD Hydrae

> Mira variable star in the constellation Hydra

**Wikidata**: [Q75002594](https://www.wikidata.org/wiki/Q75002594)  
**Source**: https://4ort.xyz/entity/bd-hydrae


## References

1. SIMBAD
2. Observations of southern emission-line stars
3. Washington Double Star Catalog
4. The ASAS-SN Catalog of Variable Stars II: Uniform Classification of 412,000 Known Variables
5. The Tycho-2 catalogue of the 2.5 million brightest stars
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Third U.S. Naval Observatory CCD Astrograph Catalog (UCAC3)
8. Gaia Early Data Release 3
9. Gaia Data Release 3
10. Gaia Data Release 2