# Q81829967
**Wikidata**: [Q81829967](https://www.wikidata.org/wiki/Q81829967)  
**Source**: https://4ort.xyz/entity/q81829967


## References

1. SIMBAD
2. Demographics of Sloan Digital Sky Survey galaxies along the Hubble sequence
3. The SDSS Photometric Catalog, Release 9
4. The ninth data release of the Sloan Digital Sky Survey: first spectroscopic data from the SDSS-III baryon oscillation spectroscopic survey
5. A catalogue of quasars and active nuclei: 13th edition
6. The SDSS Photometric Catalog, Release 8
7. The Two Micron All Sky Survey (2MASS)
8. Gaia Data Release 2