# NGC 6921

> galaxy

**Wikidata**: [Q2084703](https://www.wikidata.org/wiki/Q2084703)  
**Source**: https://4ort.xyz/entity/q2084703


## References

1. SIMBAD
2. [Source](http://haroldcorwin.net/rc3/rc39b.csv.gz)
3. TheNuSTARSerendipitous Survey: The 40-month Catalog and the Properties of the Distant High-energy X-Ray Source Population
4. The Two Micron All Sky Survey (2MASS)
5. The USNO-B Catalog
6. Swift follow-up observations of 17 INTEGRAL sources of uncertain or unknown nature
7. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
8. Hunting for supermassive black holes in nearby galaxies with the Hobby-Eberly telescope