# NP Hydrae

> variable star

**Wikidata**: [Q12070277](https://www.wikidata.org/wiki/Q12070277)  
**Source**: https://4ort.xyz/entity/np-hydrae


## References

1. Washington Double Star Catalog
2. SIMBAD
3. VizieR
4. Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5
5. Catalogue of Ap, HgMn and Am stars
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Validation of the new Hipparcos reduction
8. Gaia Data Release 3