# Q66651939
**Wikidata**: [Q66651939](https://www.wikidata.org/wiki/Q66651939)  
**Source**: https://4ort.xyz/entity/q66651939


## References

1. SIMBAD
2. Visual Multiples. IX. MK Spectral Types
3. Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5
4. Washington Double Star Catalog
5. The Tycho-2 catalogue of the 2.5 million brightest stars
6. Fourth USNO CCD Astrograph Catalog
7. Gaia Data Release 2
8. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
9. Validation of the new Hipparcos reduction
10. The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ∼14 000 F and G dwarfs
11. Chemical signatures of planets: beyond solar-twins