# BD+40 4552

> star

**Wikidata**: [Q73986484](https://www.wikidata.org/wiki/Q73986484)  
**Source**: https://4ort.xyz/entity/bd-40-4552


## References

1. SIMBAD
2. The Tycho-2 catalogue of the 2.5 million brightest stars
3. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
4. Gaia Data Release 2
5. Gaia Early Data Release 3
6. U, V, W velocity components for the old disk using radial velocities of 1295 stars in the three cardinal galactic directions