# NU Hydrae

> long period variable

**Wikidata**: [Q89413307](https://www.wikidata.org/wiki/Q89413307)  
**Source**: https://4ort.xyz/entity/nu-hydrae-q89413307


## References

1. SIMBAD
2. Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5
3. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. Gaia Early Data Release 3
6. Gaia Data Release 3
7. Gaia Data Release 2