# Q74223040

> classical Cepheid variable star in the constellation Cygnus

**Wikidata**: [Q74223040](https://www.wikidata.org/wiki/Q74223040)  
**Source**: https://4ort.xyz/entity/q74223040


## References

1. SIMBAD
2. Observational studies of cepheid amplitudes. I. Period-amplitude relationships for galactic cepheids and interrelation of amplitudes
3. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
4. Fourth USNO CCD Astrograph Catalog
5. Gaia Data Release 2
6. The distribution of the elements in the galactic disk. III. A reconsideration of Cepheids from l = 30{deg} to 250{deg}