# Q66491442
**Wikidata**: [Q66491442](https://www.wikidata.org/wiki/Q66491442)  
**Source**: https://4ort.xyz/entity/q66491442


## References

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