# DE Herculis

> long period variable

**Wikidata**: [Q93424998](https://www.wikidata.org/wiki/Q93424998)  
**Source**: https://4ort.xyz/entity/de-herculis


## References

1. SIMBAD
2. The Henry Draper Extension Charts: A catalogue of accurate positions, proper motions, magnitudes and spectral types of 86933 stars
3. VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+, 2007-2017)
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. Gaia Early Data Release 3
7. The Kinematics of Semi-Regular Red Variables in the Solar Neighbourhood
8. Gaia Data Release 2