# 34 Leonis

> star in the constellation Leo

**Wikidata**: [Q15939540](https://www.wikidata.org/wiki/Q15939540)  
**Source**: https://4ort.xyz/entity/34-leonis


## References

1. SIMBAD
2. Visual multiples. VII. MK classifications
3. The Ursa Major Group
4. Magnetic Field and Rotation in Lower Main-Sequence Stars: An Empirical Time-Dependent Magnetic Bode's Relation?
5. The Tycho-2 catalogue of the 2.5 million brightest stars
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Gaia Data Release 3
8. Validation of the new Hipparcos reduction
9. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
10. The radial velocities of 600 stars and measures of 69 spectroscopic binaries
11. The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ∼14 000 F and G dwarfs
12. Lithium and metallicity in the Ursa Major group
13. New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s)