# Trumpler 27

> ngc 991

**Wikidata**: [Q66491558](https://www.wikidata.org/wiki/Q66491558)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Trumpler_27)  
**Source**: https://4ort.xyz/entity/trumpler-27


## References

1. SIMBAD
2. A RAVE investigation on Galactic open clusters
3. Kinematics of OB-associations and the new reduction of theHipparcosdata
4. The orbits of open clusters in the Galaxy
5. Proper motions of the optically visible open clusters based on the UCAC4 catalog