# Q90854247

> astrophysical X-ray source in the constellation Cassiopeia

**Wikidata**: [Q90854247](https://www.wikidata.org/wiki/Q90854247)  
**Source**: https://4ort.xyz/entity/q90854247


## References

1. SIMBAD
2. The catalogue of spectral, luminosity classes of stars in the O-associations Cas III, Cas IV, Cas VII
3. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
4. The USNO-B Catalog
5. Gaia Data Release 2
6. ROSAT All-Sky Survey Faint Source Catalogue