# NGC 6840

> galaxy

**Wikidata**: [Q1147975](https://www.wikidata.org/wiki/Q1147975)  
**Source**: https://4ort.xyz/entity/ngc-6840


## References

1. SIMBAD
2. New catalogue of optically visible open clusters and candidates
3. Proper motions of the optically visible open clusters based on the UCAC4 catalog