# sig02 UMa A
**Wikidata**: [Q66477295](https://www.wikidata.org/wiki/Q66477295)  
**Source**: https://4ort.xyz/entity/sig02-uma-a


## References

1. SIMBAD
2. MK classification for visual binary components
3. Washington Double Star Catalog
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. Gaia Data Release 2