# Q87998139

> quasar in the constellation Leo

**Wikidata**: [Q87998139](https://www.wikidata.org/wiki/Q87998139)  
**Source**: https://4ort.xyz/entity/q87998139


## References

1. SIMBAD
2. The Sloan Digital Sky Survey Quasar Catalog: Twelfth data release
3. The Sloan Digital Sky Survey quasar catalog: tenth data release
4. A catalogue of quasars and active nuclei: 13th edition
5. The SDSS Photometric Catalog, Release 9
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