# Q66642609
**Wikidata**: [Q66642609](https://www.wikidata.org/wiki/Q66642609)  
**Source**: https://4ort.xyz/entity/q66642609


## References

1. SIMBAD
2. Spectral and luminosity classifications and measurements of the strength of CN absorption for late-type stars from objective-prism spectra
3. The Tycho-2 catalogue of the 2.5 million brightest stars
4. Q66682318
5. Gaia Data Release 2
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Spectral properties of cool stars: extended abundance analysis of 1,617 planet-search stars