# Q66645540
**Wikidata**: [Q66645540](https://www.wikidata.org/wiki/Q66645540)  
**Source**: https://4ort.xyz/entity/q66645540


## References

1. SIMBAD
2. Visual Multiples. IX. MK Spectral Types
3. Washington Double Star Catalog
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. Fourth USNO CCD Astrograph Catalog
6. Gaia Data Release 2
7. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
8. Validation of the new Hipparcos reduction
9. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system