# Messier 67

> Open cluster

**Wikidata**: [Q13997](https://www.wikidata.org/wiki/Q13997)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Messier_67)  
**Source**: https://4ort.xyz/entity/messier-67


## References

1. SIMBAD
2. VizieR
3. [Messier 67](http://www.messier.seds.org/m/m067.html)
4. On Structural Properties of Open Galactic Clusters and their Spatial Distribution. Catalog of Open Galactic Clusters
5. A Catalogue of Star Clusters shown on Franklin-Adams Chart Plates
6. Freebase Data Dumps. 2013
7. Gaia Data Release 2. Observational Hertzsprung-Russell diagrams
8. The Gaia-ESO Survey: The N/O abundance ratio in the Milky Way
9. Abundances of red giants in old open clusters. V. Be 31, Be 32, Be 39, M 67, NGC 188, and NGC 1193
10. Integrated parameters of star clusters: a comparison of theory and observations
11. Blue Stragglers in Galactic Open Clusters and Integrated Spectral Energy Distributions