# Q77840540

> star in the constellation Serpens

**Wikidata**: [Q77840540](https://www.wikidata.org/wiki/Q77840540)  
**Source**: https://4ort.xyz/entity/q77840540


## References

1. SIMBAD
2. UBV photometry, spectral types NGC 6611
3. NGC 6611: a cluster caught in the act
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. Catalog of Galactic OB Stars
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Gaia Data Release 2
8. The VLT-FLAMES survey of massive stars: Observations in the Galactic clusters NGC 3293, NGC 4755 and NGC 6611
9. The galactic distribution of chemical elements as derived from B-stars in open clusters II. NGC6611, S285, and S289
10. The VLT-FLAMES survey of massive stars: constraints on stellar evolution from the chemical compositions of rapidly rotating Galactic and Magellanic cloud B-type stars
11. The projected rotational velocity distribution of a sample of OB stars from a calibration based on synthetic He I lines