# 73 Orionis

> star in the constellation Orion

**Wikidata**: [Q3599745](https://www.wikidata.org/wiki/Q3599745)  
**Source**: https://4ort.xyz/entity/73-orionis


## References

1. SIMBAD
2. Spectral classification of 533 B8-A2 stars and the mean absolute magnitude of A0V stars
3. A study of the bright A stars. I. A catalogue of spectral classifications
4. Catalog of Galactic OB Stars
5. The Tycho-2 catalogue of the 2.5 million brightest stars
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Gaia Early Data Release 3
8. Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ∼55000 stars and mean radial velocities of 516 Galactic open clusters and associations
9. The IACOB project. III. New observational clues to understand macroturbulent broadening in massive O- and B-type stars
10. Gaia Data Release 2