# HD 53240

> star

**Wikidata**: [Q3781268](https://www.wikidata.org/wiki/Q3781268)  
**Source**: https://4ort.xyz/entity/q3781268


## References

1. SIMBAD
2. Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5
3. Catalog of Galactic OB Stars
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 B Stars
9. An empirical temperature calibration for the Δ a photometric system . I. The B-type stars