# Sigma Orionis D
**Wikidata**: [Q66531080](https://www.wikidata.org/wiki/Q66531080)  
**Source**: https://4ort.xyz/entity/sigma-orionis-d


## References

1. SIMBAD
2. A spectroscopic census in young stellar regions: the {sigma} Orionis cluster
3. Washington Double Star Catalog
4. Catalog of Galactic OB Stars
5. Gaia Data Release 2
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. A near-infrared/optical/X-ray survey in the centre of sigma Orionis
8. The IACOB project. III. New observational clues to understand macroturbulent broadening in massive O- and B-type stars