# AK Hydrae

> long-period variable star in the constellation Hydra

**Wikidata**: [Q66497324](https://www.wikidata.org/wiki/Q66497324)  
**Source**: https://4ort.xyz/entity/ak-hydrae


## References

1. SIMBAD
2. Source
3. Gaia Data Release 3
4. VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+, 2007-2017)
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. Gaia Early Data Release 3
7. Spectroscopic binaries among Hipparcos M giants'. I. Data, orbits, and intrinsic variations
8. Gaia Data Release 2