# NGC 4640

> galaxy

**Wikidata**: [Q1113103](https://www.wikidata.org/wiki/Q1113103)  
**Source**: https://4ort.xyz/entity/ngc-4640


## References

1. SIMBAD
2. VizieR
3. The GALEX Ultraviolet Virgo Cluster Survey (GUViCS) III. The ultraviolet source catalogs
4. The SDSS Photometric Catalog, Release 7
5. The Updated Zwicky Catalog (UZC)
6. Nucleated dwarf elliptical galaxies in the Virgo cluster
7. Gaia Data Release 2
8. The Two Micron All Sky Survey (2MASS)
9. Galaxy groups: a 2MASS catalog