# CY Hydrae

> star

**Wikidata**: [Q123695291](https://www.wikidata.org/wiki/Q123695291)  
**Source**: https://4ort.xyz/entity/cy-hydrae


## References

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