# NGC 1977
**Wikidata**: [Q15729](https://www.wikidata.org/wiki/Q15729)  
**Source**: https://4ort.xyz/entity/q15729


## References

1. SIMBAD
2. VizieR
3. Freebase Data Dumps. 2013
4. A RAVE investigation on Galactic open clusters
5. On the metallicity of open clusters
6. Astrophysical parameters of Galactic open clusters
7. History and Accurate Positions for the NGC/IC Objects
8. Proper motions of the optically visible open clusters based on the UCAC4 catalog