# Q77973258

> RR Lyrae variable star in the constellation Hercules

**Wikidata**: [Q77973258](https://www.wikidata.org/wiki/Q77973258)  
**Source**: https://4ort.xyz/entity/q77973258


## References

1. SIMBAD
2. Newly discovered RR Lyrae stars in the SDSS-Pan-STARRS1-Catalina footprint
3. The SDSS Photometric Catalog, Release 8
4. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
5. The Catalina surveys periodic variable star catalog
6. Gaia Data Release 2
7. Quantifying kinematic substructure in the Milky Way's stellar halo
8. The Milky Way's circular velocity curve to 60 kpc and an estimate of the dark matter halo mass from the kinematics of ~2400 SDSS blue horizontal-branch stars
9. Exploring the variable sky with LINEAR. II. Halo structure and substructure traced by RR Lyrae stars to 30 kpc