# Q77470218

> quasar in the constellation Hercules

**Wikidata**: [Q77470218](https://www.wikidata.org/wiki/Q77470218)  
**Source**: https://4ort.xyz/entity/q77470218


## References

1. SIMBAD
2. The Sloan Digital Sky Survey Quasar Catalog. II. First Data Release
3. Constraint on the time variation of the fine-structure constant with the SDSS-III/BOSS DR12 quasar sample
4. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission
5. A catalogue of quasars and active nuclei: 13th edition
6. The SDSS Photometric Catalog, Release 9
7. Gaia Data Release 2