# Q66642780
**Wikidata**: [Q66642780](https://www.wikidata.org/wiki/Q66642780)  
**Source**: https://4ort.xyz/entity/q66642780


## References

1. SIMBAD
2. VizieR Online Data Catalog: Henry Draper Catalogue and Extension, published in Ann. Harvard Obs. 91-100 (1918-1925)
3. The Tycho-2 catalogue of the 2.5 million brightest stars
4. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
5. Validation of the new Hipparcos reduction
6. Carbon and oxygen abundances across the Hertzsprung gap