# Q89518264

> Seyfert 2 galaxy in the constellation Corona Borealis

**Wikidata**: [Q89518264](https://www.wikidata.org/wiki/Q89518264)  
**Source**: https://4ort.xyz/entity/q89518264


## References

1. SIMBAD
2. The ninth data release of the Sloan Digital Sky Survey: first spectroscopic data from the SDSS-III baryon oscillation spectroscopic survey
3. A catalogue of quasars and active nuclei: 13th edition
4. The Two Micron All Sky Survey (2MASS)
5. Gaia Data Release 2
6. The seventh data release of the Sloan Digital Sky Survey