# Q81503691

> quasar in the constellation Canes Venatici

**Wikidata**: [Q81503691](https://www.wikidata.org/wiki/Q81503691)  
**Source**: https://4ort.xyz/entity/q81503691


## 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. USNO-A2.0
5. The SDSS Photometric Catalog, Release 9
6. Gaia Data Release 2
7. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission