# Q89739765

> Seyfert 1 galaxy in the constellation Hercules

**Wikidata**: [Q89739765](https://www.wikidata.org/wiki/Q89739765)  
**Source**: https://4ort.xyz/entity/q89739765


## References

1. SIMBAD
2. Demographics of Sloan Digital Sky Survey galaxies along the Hubble sequence
3. The ninth data release of the Sloan Digital Sky Survey: first spectroscopic data from the SDSS-III baryon oscillation spectroscopic survey
4. A catalogue of quasars and active nuclei: 13th edition
5. The SDSS Photometric Catalog, Release 7
6. The Two Micron All Sky Survey (2MASS)
7. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
8. Gaia Data Release 2
9. The SDSS Photometric Catalog, Release 9