# Q91781621
**Wikidata**: [Q91781621](https://www.wikidata.org/wiki/Q91781621)  
**Source**: https://4ort.xyz/entity/q91781621


## References

1. SIMBAD
2. A study of H-alpha emission objects in the Southern Milky Way
3. Fourth USNO CCD Astrograph Catalog
4. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
5. The DENIS database, 3rd Release
6. Gaia Data Release 2
7. The Radial Velocity Experiment (RAVE): fifth data release
8. The radial velocity experiment (RAVE): fourth data release