# Messier 23

> Open cluster

**Wikidata**: [Q11396](https://www.wikidata.org/wiki/Q11396)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Messier_23)  
**Source**: https://4ort.xyz/entity/messier-23


## References

1. SIMBAD
2. VizieR
3. [Revised NGC Data for NGC 6494](http://spider.seds.org/ngc/revngcic.cgi?NGC6494)
4. A Catalogue of Star Clusters shown on Franklin-Adams Chart Plates
5. On Structural Properties of Open Galactic Clusters and their Spatial Distribution. Catalog of Open Galactic Clusters
6. Freebase Data Dumps. 2013
7. A RAVE investigation on Galactic open clusters
8. On the metallicity of open clusters
9. Astrophysical parameters of Galactic open clusters
10. The orbits of open clusters in the Galaxy
11. Proper motions of the optically visible open clusters based on the UCAC4 catalog