# BD+37 3999

> star in the constellation Cygnus

**Wikidata**: [Q74088481](https://www.wikidata.org/wiki/Q74088481)  
**Source**: https://4ort.xyz/entity/bd-37-3999


## References

1. SIMBAD
2. VizieR
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 Data Release 2