# SV Hydrae

> RR Lyrae variable star in the constellation Hydra

**Wikidata**: [Q78768529](https://www.wikidata.org/wiki/Q78768529)  
**Source**: https://4ort.xyz/entity/sv-hydrae


## References

1. SIMBAD
2. Observations of Southern RR Lyr stars
3. Gaia Data Release 3
4. General Catalogue of Variable Stars, 3rd ed.
5. Mid-infrared period-luminosity relations of RR Lyrae stars derived from the AllWISE Data Release
6. Discovery of ~9,000 new RR Lyrae in the southern Catalina surveys
7. Gaia Data Release 2
8. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
9. Gaia Early Data Release 3
10. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
11. On the Use of Field RR Lyrae as Galactic Probes. III. The α-element Abundances
12. On the Use of Field RR Lyrae as Galactic Probes. II. A New ΔS Calibration to Estimate Their Metallicity