# HD 21447

> binary star system in the constellation Camelopardalis

**Wikidata**: [Q3304606](https://www.wikidata.org/wiki/Q3304606)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/HD_21447)  
**Source**: https://4ort.xyz/entity/hd-21447


## References

1. [A catalogue of multiplicity among bright stellar systems](http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-ref=VIZ62716da283fa2&-out.add=.&-source=J/MNRAS/389/869/table1&recno=517)
2. New Catalogue of Suspected Variable Stars
3. [VizieR](https://vizier.u-strasbg.fr/viz-bin/VizieR-5?-ref=VIZ62716da6840d6&-out.add=.&-source=VI/42/out&-c=050.1173%20%2b55.0167,eq=B1875,rs=2)
4. The early A type stars: refined MK classification, confrontation with Stromgren photometry, and the effects of rotation
5. Washington Double Star Catalog
6. SIMBAD
7. Freebase Data Dumps. 2013
8. UBV photometry of stars whose positions are accurately known. VII
9. Catalogue of Stellar Photometry in Johnson's 11-color system
10. Gaia Data Release 2
11. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
12. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
13. Rotational velocities of A-type stars. III. Velocity distributions
14. Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i
15. Rotational velocities of A-type stars. IV. Evolution of rotational velocities