# Theta1 Orionis C

> binary star system in the constellation Orion

**Wikidata**: [Q1196181](https://www.wikidata.org/wiki/Q1196181)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Theta1_Orionis_C)  
**Source**: https://4ort.xyz/entity/theta1-orionis-c


## References

1. SIMBAD
2. The Galactic O-Star Spectroscopic Survey. I. Classification system and bright northern stars in the blue-violet at R ~ 2500
3. Spectroscopic observations of O-type stars. V. The hydrogen lines and lambda 4686 He II
4. Variability of OB stars from TESS southern Sectors 1-13 and high-resolution IACOB and OWN spectroscopy
5. Washington Double Star Catalog
6. Freebase Data Dumps. 2013
7. TESS Eclipsing Binary Stars. I. Short-cadence Observations of 4584 Eclipsing Binaries in Sectors 1–26
8. Catalogue of Stellar Photometry in Johnson's 11-color system
9. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
10. Gaia Early Data Release 3
11. Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ∼55000 stars and mean radial velocities of 516 Galactic open clusters and associations
12. Validation of the new Hipparcos reduction