# Delta2 Lyrae

> variable star in the constellation Lyra

**Wikidata**: [Q4147168](https://www.wikidata.org/wiki/Q4147168)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Delta2_Lyrae)  
**Source**: https://4ort.xyz/entity/delta2-lyrae


## References

1. SIMBAD
2. General Catalogue of Variable Stars
3. The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not as Cool as We Thought
4. A possible new galactic cluster involving delta Lyrae
5. Revised MK spectral types for G, K ans M stars
6. A standard stellar spectral sequence in the red/near-infrared - Classes K5 to M9
7. The Perkins catalog of revised MK types for the cooler stars
8. Spectral Classification
9. Freebase Data Dumps. 2013
10. VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+, 2007-2017)
11. Catalogue of Stellar Photometry in Johnson's 11-color system
12. Gaia Early Data Release 3
13. Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants
14. Validation of the new Hipparcos reduction
15. The atmospheric parameters and spectral interpolator for the MILES stars
16. Gaia Data Release 2