# 20 Vulpeculae

> star in the constellation Vulpecula

**Wikidata**: [Q4630606](https://www.wikidata.org/wiki/Q4630606)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/20_Vulpeculae)  
**Source**: https://4ort.xyz/entity/20-vulpeculae


## References

1. SIMBAD
2. Spectral classification of the bright B8 stars
3. Catalogue of Stellar Photometry in Johnson's 11-color system
4. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
5. Gaia Early Data Release 3
6. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
7. TESS observations of Be stars: a new interpretation
8. Gaia Data Release 2
9. Rotational velocities of A-type stars. IV. Evolution of rotational velocities
10. High and intermediate-resolution spectroscopy of Be stars. An atlas of Hγ, He I 4471 and Mg II 4481 lines