# NGC 503

> galaxy

**Wikidata**: [Q1037026](https://www.wikidata.org/wiki/Q1037026)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/NGC_503)  
**Source**: https://4ort.xyz/entity/ngc-503


## References

1. SIMBAD
2. VizieR
3. Redshifts for a sample of radio-selected poor clusters
4. The Updated Zwicky Catalog (UZC)
5. The Two Micron All Sky Survey (2MASS)
6. Galaxy groups: a 2MASS catalog
7. Groups of Galaxies in the Two Micron All Sky Redshift Survey