NGC 6819

NGC 6819
NGC 6819
	; Credit: Tom Wildener
Observation data (J2000 epoch)
Right ascension	19h 41m 18.0s
Declination	+40° 11′ 12″
Distance	7,200 ly
Apparent magnitude (V)	7.3
Apparent dimensions (V)	5'
Physical characteristics
Other designations	Collinder 403
Associations
Constellation	Cygnus
	See also: Open cluster, List of open clusters

NGC 6819 is an open cluster (commonly known as an "open star cluster") located 7,200 light years away in the Cygnus constellation. It was discovered by Caroline Herschel on 12 May 1784.

Situated on the boundary of Cygnus and Lyra, NGC 6819 contains roughly two dozen stars of magnitude 10 to 12, with many more lower magnitude members.^[2]

The age of NGC 6819 is estimated here to be ~ 2.5 ± 0.5 Gyr.^[3] Its distance is calculated to be 2.16 ± 0.57 kpc.^[4]

References

^ ^a ^b ^c "NGC 6819". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-19.
^ "NGC 6819". Retrieved November 16, 2011.
^ "Astro Lab Spring 2008". www.phy.ohiou.edu. Archived from the original on 2018-10-01. Retrieved 2016-06-02.
^ "Astro Lab Spring 2008". www.phy.ohiou.edu. Archived from the original on 2018-10-01. Retrieved 2016-06-02.

External links

Media related to NGC 6819 at Wikimedia Commons
NGC 6819 at SEDS
NGC 6819 at Silicon Owl
NGC 6819 at Messier45^{[permanent dead link]}
NGC 6819 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

This star cluster–related article is a stub. You can help Wikipedia by expanding it.

[SIMBAD-1] "NGC 6819". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-19.

[Skyhound-2] "NGC 6819". Retrieved November 16, 2011.

[3] "Astro Lab Spring 2008". www.phy.ohiou.edu. Archived from the original on 2018-10-01. Retrieved 2016-06-02.

[4] "Astro Lab Spring 2008". www.phy.ohiou.edu. Archived from the original on 2018-10-01. Retrieved 2016-06-02.

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