# NGC 642

> galaxy

**Wikidata**: [Q1037855](https://www.wikidata.org/wiki/Q1037855)  
**Source**: https://4ort.xyz/entity/ngc-642


## References

1. SIMBAD
2. The surface photometry catalogue of the ESO-Uppsala galaxies
3. The HIPASS catalogue — III. Optical counterparts and isolated dark galaxies
4. The Two Micron All Sky Survey (2MASS)
5. Galaxy groups: a 2MASS catalog
6. Groups of Galaxies in the Two Micron All Sky Redshift Survey