# 51 Leonis

> star in the constellation Leo

**Wikidata**: [Q9553487](https://www.wikidata.org/wiki/Q9553487)  
**Source**: https://4ort.xyz/entity/51-leonis


## References

1. SIMBAD
2. Version 2 of the Hipparcos Input Catalogue
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. Rotational and radial velocities for a sample of 761 Hipparcos giants and the role of binarity
9. Gaia Data Release 3
10. Analysis of the public HARPS/ESO spectroscopic archive. Ca II H&K time series for the HARPS radial velocity database