# NGC 6645

> open cluster in Sagittarius

**Wikidata**: [Q1146864](https://www.wikidata.org/wiki/Q1146864)  
**Source**: https://4ort.xyz/entity/q1146864


## References

1. SIMBAD
2. Global survey of star clusters in the Milky Way
3. Proper motions of the optically visible open clusters based on the UCAC4 catalog