# V523 Hydrae

> RR Lyrae variable star in the constellation Hydra

**Wikidata**: [Q86173823](https://www.wikidata.org/wiki/Q86173823)  
**Source**: https://4ort.xyz/entity/v523-hydrae


## References

1. SIMBAD
2. Gaia Data Release 3
3. Machine-learned Identification of RR Lyrae Stars from Sparse, Multi-band Data: The PS1 Sample
4. Probing the outer galactic halo with RR Lyrae from the Catalina surveys
5. Exploring the variable sky with LINEAR. III. Classification of periodic light curves
6. Exploring the variable sky with LINEAR. II. Halo structure and substructure traced by RR Lyrae stars to 30 kpc
7. The QUEST RR Lyrae Survey. I. The First Catalog
8. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
9. The ninth data release of the Sloan Digital Sky Survey: first spectroscopic data from the SDSS-III baryon oscillation spectroscopic survey
10. Gaia Early Data Release 3
11. A Disk Origin for the Monoceros Ring and A13 Stellar Overdensities
12. Gaia Data Release 2