# II Hydrae

> star

**Wikidata**: [Q14858252](https://www.wikidata.org/wiki/Q14858252)  
**Source**: https://4ort.xyz/entity/ii-hydrae


## References

1. SIMBAD
2. Moderate-resolution spectral standards from lambda-5600 to lambda-9000 Angstroms
3. Source
4. Spectral classification of Southern fundamental stars
5. Gaia Data Release 3
6. VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+, 2007-2017)
7. Catalogue of Stellar Photometry in Johnson's 11-color system
8. Gaia Early Data Release 3
9. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
10. Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era
11. Validation of the new Hipparcos reduction