# 57 Ursae Majoris

> star in the constellation Ursa Major

**Wikidata**: [Q10940441](https://www.wikidata.org/wiki/Q10940441)  
**Source**: https://4ort.xyz/entity/57-ursae-majoris


## References

1. SIMBAD
2. Rotational velocities of A-type stars. III. Velocity distributions
3. Washington Double Star Catalog
4. Validation of the new Hipparcos reduction
5. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
6. Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i
7. Rotational velocities of A-type stars. IV. Evolution of rotational velocities