# Q81854879

> Seyfert 1 galaxy in the constellation Leo

**Wikidata**: [Q81854879](https://www.wikidata.org/wiki/Q81854879)  
**Source**: https://4ort.xyz/entity/q81854879


## 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. The eleventh and twelfth data releases of the Sloan Digital Sky Survey: final data from SDSS-III
4. A catalogue of quasars and active nuclei: 13th edition
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. The Two Micron All Sky Survey (2MASS)
7. The SDSS Photometric Catalog, Release 9
8. Gaia Data Release 2