# V1217 Herculis

> RR Lyrae variable star in the constellation Hercules

**Wikidata**: [Q93072927](https://www.wikidata.org/wiki/Q93072927)  
**Source**: https://4ort.xyz/entity/v1217-herculis


## References

1. SIMBAD
2. Gaia Data Release 2
3. Probing the outer galactic halo with RR Lyrae from the Catalina surveys
4. A First Catalog of Variable Stars Measured by the Asteroid Terrestrial-impact Last Alert System (ATLAS)
5. Analysis of RR Lyrae Stars in the Northern Sky Variability Survey
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Gaia Early Data Release 3
8. On the Use of Field RR Lyrae as Galactic Probes. III. The α-element Abundances
9. On the Use of Field RR Lyrae as Galactic Probes. II. A New ΔS Calibration to Estimate Their Metallicity