# Q81923244

> Seyfert 1 galaxy in the constellation Ursa Major

**Wikidata**: [Q81923244](https://www.wikidata.org/wiki/Q81923244)  
**Source**: https://4ort.xyz/entity/q81923244


## References

1. SIMBAD
2. The SDSS Photometric Catalog, Release 9
3. The eleventh and twelfth data releases of the Sloan Digital Sky Survey: final data from SDSS-III
4. USNO-A2.0
5. A catalogue of quasars and active nuclei: 13th edition
6. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission
7. The SDSS Photometric Catalog, Release 7
8. Gaia Data Release 2