# Q66497506
**Wikidata**: [Q66497506](https://www.wikidata.org/wiki/Q66497506)  
**Source**: https://4ort.xyz/entity/q66497506


## References

1. SIMBAD
2. The H-R diagram of the alpha Persei cluster
3. The Tycho-2 catalogue of the 2.5 million brightest stars
4. Gaia Data Release 2
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. Gaia Data Release 2. Observational Hertzsprung-Russell diagrams
7. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system