# Q77816698

> Seyfert 1 galaxy in the constellation Leo

**Wikidata**: [Q77816698](https://www.wikidata.org/wiki/Q77816698)  
**Source**: https://4ort.xyz/entity/q77816698


## References

1. SIMBAD
2. Constraint on the time variation of the fine-structure constant with the SDSS-III/BOSS DR12 quasar sample
3. A catalogue of quasars and active nuclei: 13th edition
4. The ninth data release of the Sloan Digital Sky Survey: first spectroscopic data from the SDSS-III baryon oscillation spectroscopic survey
5. The Two Micron All Sky Survey (2MASS)
6. Gaia Data Release 2
7. The SDSS Photometric Catalog, Release 9