# HD 196821

> variable star in the Vulpeculae constellation

**Wikidata**: [Q6869223](https://www.wikidata.org/wiki/Q6869223)  
**Source**: https://4ort.xyz/entity/q6869223


## References

1. VizieR
2. A study of the bright A stars. I. A catalogue of spectral classifications
3. SIMBAD
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. Gaia Data Release 2
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
8. Chemical abundances in Hg-Mn stars
9. Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i