# Theta1 Orionis B

> variable quadruple star system

**Wikidata**: [Q3990372](https://www.wikidata.org/wiki/Q3990372)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Theta1_Orionis_B)  
**Source**: https://4ort.xyz/entity/theta1-orionis-b


## References

1. SIMBAD
2. ICCD Speckle Observations of Binary Stars. XIX. An Astrometric/Spectroscopic Survey of O Stars
3. Washington Double Star Catalog
4. Up-to-date linear elements of eclipsing binaries
5. Catalogue of Stellar Photometry in Johnson's 11-color system
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. The luminosity and mass function of the Trapezium cluster: from B stars to the deuterium-burning limit
8. Gaia Early Data Release 3
9. Kinematics of the Orion Trapezium based on diffracto-astrometry and historical data
10. Rotational Velocities of B Stars
11. The Tycho-2 catalogue of the 2.5 million brightest stars