# Q81918097

> active galactic nucleus in the constellation Ursa Major

**Wikidata**: [Q81918097](https://www.wikidata.org/wiki/Q81918097)  
**Source**: https://4ort.xyz/entity/q81918097


## References

1. SIMBAD
2. Nuclear activity in isolated galaxies
3. The AMIGA sample of isolated galaxies. XI. Optical characterisation of nuclear activity
4. The SDSS Photometric Catalog, Release 9
5. The ninth data release of the Sloan Digital Sky Survey: first spectroscopic data from the SDSS-III baryon oscillation spectroscopic survey
6. The AMIGA project. I. Optical characterization of the CIG catalog
7. The Two Micron All Sky Survey (2MASS)
8. Gaia Data Release 2
9. Galaxy groups: a 2MASS catalog