# HD 166640

> star in the constellation Hercules

**Wikidata**: [Q10848547](https://www.wikidata.org/wiki/Q10848547)  
**Source**: https://4ort.xyz/entity/q10848547


## References

1. SIMBAD
2. VizieR
3. High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. Gaia Data Release 2
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Chemical compositions of thin-disk, high-metallicity red horizontal-branch field stars