# Q87716558

> RR Lyrae variable star in the constellation Ophiuchus

**Wikidata**: [Q87716558](https://www.wikidata.org/wiki/Q87716558)  
**Source**: https://4ort.xyz/entity/q87716558


## References

1. SIMBAD
2. Summary of delta-S metallicity measurements for bright RR Lyrae variables observed at Lick Observatory and KPNO between 1972 and 1987
3. General Catalogue of Variable Stars, 3rd ed.
4. Gaia Data Release 2
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. The Tycho-2 catalogue of the 2.5 million brightest stars
7. Kinematics of metal-poor stars in the Galaxy. II. Proper motions for a large nonkinematically selected sample