# Q90587171
**Wikidata**: [Q90587171](https://www.wikidata.org/wiki/Q90587171)  
**Source**: https://4ort.xyz/entity/q90587171


## References

1. SIMBAD
2. The SDSS Photometric Catalog, Release 9
3. The Sloan Digital Sky Survey quasar catalog. V. Seventh data release
4. A catalogue of quasars and active nuclei: 13th edition
5. Gaia Data Release 2
6. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission