# Q66646493
**Wikidata**: [Q66646493](https://www.wikidata.org/wiki/Q66646493)  
**Source**: https://4ort.xyz/entity/q66646493


## References

1. SIMBAD
2. A search for metal-deficient stars
3. The Tycho-2 catalogue of the 2.5 million brightest stars
4. Gaia Data Release 2
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. The oxygen abundance in metal-poor stars
7. New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s)