# Q66630405
**Wikidata**: [Q66630405](https://www.wikidata.org/wiki/Q66630405)  
**Source**: https://4ort.xyz/entity/q66630405


## References

1. SIMBAD
2. Source
3. Observational studies of cepheid amplitudes. I. Period-amplitude relationships for galactic cepheids and interrelation of amplitudes
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. Parameters and abundances in luminous stars