# Q66493281
**Wikidata**: [Q66493281](https://www.wikidata.org/wiki/Q66493281)  
**Source**: https://4ort.xyz/entity/q66493281


## References

1. SIMBAD
2. Source
3. A study of the II Scorpii association
4. Seven-colour photometry of O, B and A stars
5. A new photoelectric method of classification of luminosity and spectral type for O and B-type stars
6. The Tycho-2 catalogue of the 2.5 million brightest stars
7. Gaia Data Release 2
8. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
9. A correlation between circumstellar disks and rotation in the upper Scorpius OB association