# HD 21661

> star in the constellation Perseus

**Wikidata**: [Q10849507](https://www.wikidata.org/wiki/Q10849507)  
**Source**: https://4ort.xyz/entity/q10849507


## References

1. SIMBAD
2. [VizieR](https://vizier.u-strasbg.fr/viz-bin/VizieR-5?-ref=VIZ62716da6840d6&-out.add=.&-source=VI/42/out&-c=050.7198%20%2b48.9710,eq=B1875,rs=2)
3. The radial velocities of 335 late B-type 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 A-type stars in the northern hemisphere. II. Measurement of v sin i
9. Rotational Velocities of B Stars