# Y Hydrae

> variable star in the constellation Hydra

**Wikidata**: [Q59126217](https://www.wikidata.org/wiki/Q59126217)  
**Source**: https://4ort.xyz/entity/y-hydrae


## References

1. SIMBAD
2. General Catalogue of Variable Stars
3. A Moderate-Resolution Spectral Atlas of Carbon Stars: R, J, N, CH, and Barium Stars
4. Gaia Data Release 3
5. VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+, 2007-2017)
6. Catalogue of Stellar Photometry in Johnson's 11-color system
7. Gaia Early Data Release 3
8. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
9. The chemical composition of carbon stars. I. Carbon, nitrogen and oxygen in 30 cool carbon stars in the galactic disk
10. Gaia Data Release 2