Key facts
- Right ascension
- 19 37 17
- Declination
- +46 ° 23 ′ 18 ″
- Distance
- 3600 ly (1107 pc )
- Apparent dimensions v
- 13'
- Estimated age
- 1.00±0.17 Gyr
- Other designations
- Cr 402
- Constellation
- Cygnus
via Wikipedia infobox
Wikidata facts
- Instance of
- open cluster
- Constellation
- Cygnus
- Distance from Earth
- 1240
- Image
- NGC 6811.png
Show 13 more facts
- Commons category
- NGC 6811
- discoverer or inventor
- John Frederick William Herschel
- time of discovery or invention
- 1829-08-29
- catalog code
- [KPS2012] MWSC 3143
- apparent magnitude
- 6.8
- right ascension
- 294.3208
- declination
- 46.3883
- radial velocity
- 7.1
- epoch
- J2000.0
- metallicity
- 0.03
- right ascension component of proper motion
- -4.95
- declination component of proper motion
- -7.78
- age estimated by a dating method
- 1
Sources (2)
via Wikidata · CC0
~3 min read
Encyclopedic overview
NGC 6811 is an open cluster in the constellation of Cygnus, near the constellation of Lyra. It has an angular size half that of the full Moon and includes about 1000 stars of roughly similar magnitude. It has also been called "The Hole in the Cluster" or "Hole in a Cluster" because of its dark center.
Features
Excerpted from Wikipedia’s “Q1147831” article, available under the CC BY-SA 4.0 licence.