# R Hydrae

> variable star in the constellation Hydra

**Wikidata**: [Q2124823](https://www.wikidata.org/wiki/Q2124823)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/R_Hydrae)  
**Source**: https://4ort.xyz/entity/r-hydrae


## References

1. General Catalogue of Variable Stars
2. SIMBAD
3. Washington Double Star Catalog
4. Source
5. Freebase Data Dumps. 2013
6. Determination of pulsation periods and other parameters of 2875 stars classified as Mira in the All Sky Automated Survey (ASAS)
7. Catalogue of Stellar Photometry in Johnson's 11-color system
8. Gaia Data Release 3
9. Gaia Early Data Release 3
10. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
11. Validation of the new Hipparcos reduction