# Q81820659

> quasar in the constellation Leo

**Wikidata**: [Q81820659](https://www.wikidata.org/wiki/Q81820659)  
**Source**: https://4ort.xyz/entity/q81820659


## References

1. SIMBAD
2. The Sloan Digital Sky Survey quasar catalog: tenth data release
3. The Sloan Digital Sky Survey Quasar Catalog: Twelfth data release
4. A catalogue of quasars and active nuclei: 13th edition
5. The Third Data Release of the Sloan Digital Sky Survey
6. The SDSS Photometric Catalog, Release 7
7. Gaia Data Release 2