# LL Herculis

> long period variable

**Wikidata**: [Q87377578](https://www.wikidata.org/wiki/Q87377578)  
**Source**: https://4ort.xyz/entity/ll-herculis


## References

1. SIMBAD
2. VizieR
3. Spectral classification for new or unclassified late-type variables, emission-line stars, S stars, and planetary nebulae
4. General Catalogue of Variable Stars, 3rd ed.
5. The first INTEGRAL-OMC catalogue of optically variable sources
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Gaia Early Data Release 3
8. Gaia Data Release 3
9. Gaia Data Release 2