# HD 31209

> star in the constellation Orion

**Wikidata**: [Q10849890](https://www.wikidata.org/wiki/Q10849890)  
**Source**: https://4ort.xyz/entity/q10849890


## References

1. SIMBAD
2. [VizieR](https://vizier.cds.unistra.fr/viz-bin/VizieR-5?-ref=VIZ648b82b12d3934&-out.add=.&-source=VI/42/out&-c=071.8648%20%2b01.3621,eq=B1875,rs=2)
3. Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. Gaia Data Release 2
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
8. Rotational velocities of A-type stars. III. Velocity distributions
9. Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i
10. Rotational velocities of A-type stars. IV. Evolution of rotational velocities