# Theta1 Orionis A

> star in the constellation Orion

**Wikidata**: [Q3990373](https://www.wikidata.org/wiki/Q3990373)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Theta1_Orionis_A)  
**Source**: https://4ort.xyz/entity/theta1-orionis-a


## References

1. SIMBAD
2. A photometric study of the Ori OB1 association. I. Observational data
3. Up-to-date linear elements of eclipsing binaries
4. Catalogue of Stellar Photometry in Johnson's 11-color system
5. The luminosity and mass function of the Trapezium cluster: from B stars to the deuterium-burning limit
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Gaia Early Data Release 3
8. SB9: The ninth catalogue of spectroscopic binary orbits
9. The chemical composition of the Orion star forming region. III. C, N, Ne, Mg, and Fe abundances in B-type stars revisited
10. The IACOB project. III. New observational clues to understand macroturbulent broadening in massive O- and B-type stars
11. The IACOB project. I. Rotational velocities in northern Galactic O- and early B-type stars revisited. The impact of other sources of line-broadening
12. Gaia Data Release 2