# Q75292923
**Wikidata**: [Q75292923](https://www.wikidata.org/wiki/Q75292923)  
**Source**: https://4ort.xyz/entity/q75292923


## References

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