# X Vulpeculae

> variable star in hte constellation Vulpecula

**Wikidata**: [Q55496301](https://www.wikidata.org/wiki/Q55496301)  
**Source**: https://4ort.xyz/entity/x-vulpeculae


## References

1. General Catalogue of Variable Stars
2. The Henry Draper Extension Charts: A catalogue of accurate positions, proper motions, magnitudes and spectral types of 86933 stars
3. SIMBAD
4. Observational studies of cepheid amplitudes. I. Period-amplitude relationships for galactic cepheids and interrelation of amplitudes
5. Period-colour and amplitude-colour relations in classical Cepheid variables - IV. The multiphase relations
6. Gaia Data Release 2
7. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
8. Barium abundances in Cepheids