# HD91021

> variable star

**Wikidata**: [Q12070753](https://www.wikidata.org/wiki/Q12070753)  
**Source**: https://4ort.xyz/entity/q12070753


## References

1. Washington Double Star Catalog
2. SIMBAD
3. Catalogue of two dimentional spectral types for the HD stars, Vol. 2
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. The Tycho double star catalogue
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Gaia Data Release 3
8. Gaia Early Data Release 3
9. Validation of the new Hipparcos reduction