# Q91825566

> star in the constellation Hercules

**Wikidata**: [Q91825566](https://www.wikidata.org/wiki/Q91825566)  
**Source**: https://4ort.xyz/entity/q91825566


## References

1. SIMBAD
2. The Tycho-2 catalogue of the 2.5 million brightest stars
3. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
4. Third U.S. Naval Observatory CCD Astrograph Catalog (UCAC3)
5. Gaia Data Release 2
6. Exploring anticorrelations and light element variations in northern globular clusters observed by the APOGEE survey
7. Abundances for globular cluster giants. I. Homogeneous metallicities for 24 clusters
8. Extremely metal-deficient red giants. II. Chemical abundances in 21 halo giants
9. High-resolution spectra of stars in globular clusters. VI. Oxygen-deficient red giant stars in M 13
10. Oxygen abundances in halo giants. II. Giants in the globular clusters M 13 and M 3 and the intermediatly metal-poor halo field
11. Evidence from sodium-abundance variations among red giants of M 13 for inhomogeneities in the protocluster gas