# HD 40657

> star in the constellation Orion

**Wikidata**: [Q3781019](https://www.wikidata.org/wiki/Q3781019)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/HD_40657)  
**Source**: https://4ort.xyz/entity/hd-40657


## References

1. SIMBAD
2. VizieR
3. Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5
4. Catalogue of Stellar Photometry in Johnson's 11-color system
5. Gaia Data Release 2
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. The atmospheric parameters and spectral interpolator for the MILES stars
8. Catalogue of rotational velocities of the stars
9. A catalogue of stellar rotational velocities