# SZ Hydrae

> RR Lyrae variable star in the constellation Hydra

**Wikidata**: [Q87105690](https://www.wikidata.org/wiki/Q87105690)  
**Source**: https://4ort.xyz/entity/sz-hydrae


## References

1. SIMBAD
2. Spectroscopic validation of low-metallicity stars from RAVE
3. Gaia Data Release 3
4. Automated variable star classification using the Northern Sky Variability Survey
5. Evidence for a Milky way tidal stream reaching beyond 100 kpc
6. Characteristics of bright AB-type RR Lyrae stars from the ASAS and WASP surveys
7. The Tycho-2 catalogue of the 2.5 million brightest stars
8. Second USNO CCD Astrograph Catalog
9. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
10. APASS Landolt-Sloan BVgri photometry of RAVE stars. I. Data, effective temperatures, and reddenings
11. Gaia Early Data Release 3
12. The Sixth Data Release of the Radial Velocity Experiment (RAVE). II. Stellar Atmospheric Parameters, Chemical Abundances, and Distances
13. On the Use of Field RR Lyrae as Galactic Probes. III. The α-element Abundances
14. Gaia Data Release 2