# Upsilon Draconis

> binary star system in the constellation Draco

**Wikidata**: [Q4215974](https://www.wikidata.org/wiki/Q4215974)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Upsilon_Draconis)  
**Source**: https://4ort.xyz/entity/upsilon-draconis


## References

1. SIMBAD
2. The Perkins catalog of revised MK types for the cooler stars
3. The Tycho-2 catalogue of the 2.5 million brightest stars
4. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
5. Gaia Early Data Release 3
6. Gaia Data Release 2
7. Giants in the local region
8. Fundamental Parameters of 87 Stars from the Navy Precision Optical Interferometer
9. Catalogue of rotational velocities of the stars