# V440 Hydrae

> long period variable

**Wikidata**: [Q85400048](https://www.wikidata.org/wiki/Q85400048)  
**Source**: https://4ort.xyz/entity/v440-hydrae


## References

1. SIMBAD
2. VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+, 2007-2017)
3. The Tycho-2 catalogue of the 2.5 million brightest stars
4. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
5. Gaia Early Data Release 3
6. Gaia Data Release 3
7. Gaia Data Release 2