# HD 21563

> star in the constellation Hydrus

**Wikidata**: [Q10849481](https://www.wikidata.org/wiki/Q10849481)  
**Source**: https://4ort.xyz/entity/q10849481


## References

1. SIMBAD
2. [VizieR](https://vizier.u-strasbg.fr/viz-bin/VizieR-5?-ref=VIZ62716da6840d6&-out.add=.&-source=VI/42/out&-c=050.8817%20-70.0633,eq=B1875,rs=2)
3. Source
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. Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i
8. Rotational velocities of A-type stars. III. Velocity distributions
9. Rotational velocities of A-type stars. IV. Evolution of rotational velocities