# Q81831834

> active galactic nucleus in the constellation Corona Borealis

**Wikidata**: [Q81831834](https://www.wikidata.org/wiki/Q81831834)  
**Source**: https://4ort.xyz/entity/q81831834


## References

1. SIMBAD
2. Galaxy evolution in the mid-infrared green valley: a case of the A2199 supercluster
3. The eleventh and twelfth data releases of the Sloan Digital Sky Survey: final data from SDSS-III
4. The SDSS Photometric Catalog, Release 7
5. The Two Micron All Sky Survey (2MASS)
6. Gaia Data Release 2