# Q81919683

> Seyfert 1 galaxy in the constellation Ursa Major

**Wikidata**: [Q81919683](https://www.wikidata.org/wiki/Q81919683)  
**Source**: https://4ort.xyz/entity/q81919683


## References

1. SIMBAD
2. The SDSS Photometric Catalog, Release 9
3. The ninth data release of the Sloan Digital Sky Survey: first spectroscopic data from the SDSS-III baryon oscillation spectroscopic survey
4. The eleventh and twelfth data releases of the Sloan Digital Sky Survey: final data from SDSS-III
5. A catalogue of quasars and active nuclei: 13th edition
6. The Two Micron All Sky Survey (2MASS)
7. Gaia Data Release 2
8. Galaxy groups: a 2MASS catalog