NGC 6811 is an open cluster in the constellation of Cygnus,[3] near the constellation of Lyra.[4] It has an angular size half that of the full Moon and includes about 1000 stars[5] of roughly similar magnitude.[3][6] It has also been called "The Hole in the Cluster" or "Hole in a Cluster"[7] because of its dark center.[6][8]
^"NGC 6811". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 11 May 2013.
^ abCite error: The named reference Meibom2013 was invoked but never defined (see the help page).
^Meibom, S. R.; Barnes, S. A.; Latham, D. W.; Batalha, N.; Borucki, W. J.; Koch, D. G.; Basri, Gibor; Walkowicz, L. M.; Janes, K. A.; Jenkins, J.; Van Cleve, J.; Haas, M. R.; Bryson, S. T.; Dupree, A. K.; Furesz, G.; Szentgyorgyi, A. H.; Buchhave, L. A.; Clarke, B. D.; Twicken, J. D.; Quintana, E. V. (2011). "The Kepler Cluster Study: Stellar Rotation in Ngc 6811". The Astrophysical Journal. 733 (1): L9. arXiv:1104.2912. Bibcode:2011ApJ...733L...9M. doi:10.1088/2041-8205/733/1/L9. S2CID 118585956.
^Balouchi, Shari. "Crowded Clusters Can Host Planets, Too". Sky and Telescope. Archived from the original on 10 July 2013. Retrieved 9 July 2013.
^ abStephen James O'Meara (30 June 2011). Deep-Sky Companions: The Secret Deep. Cambridge University Press. pp. 389–. ISBN 978-1-139-50007-4. Retrieved 9 July 2013.
^Stoyan, Ronald; Schurig, Stephan (2014). interstellarum Deep Sky Atlas. Erlangen: Cambridge University Press; Oculum-Verlag GmbH. ISBN 978-1-107-50338-0. OCLC 920437579.
^L. Phil Simpson (2012). Guidebook to the Constellations. Springer. pp. 505–. ISBN 978-1-4419-6941-5. Retrieved 9 July 2013.
NGC6811 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...
+30° 35′ 43″. As the westernmost NGC object in the nebula (first in right ascension), its number is sometimes used as an NGC identifier for the nebula as...
as Caldwell 33), whose brightest area is NGC 6992, trailing off farther south into NGC 6995 (together with NGC 6992 also known as "Network Nebula") and...
NGC 6946, sometimes referred to as the Fireworks Galaxy, is a face-on intermediate spiral galaxy with a small bright nucleus, whose location in the sky...
NGC 7027, also known as the Jewel Bug Nebula or the Magic Carpet Nebula, is a very young and dense planetary nebula located around 3,000 light-years (920...
Association Cygnus OB2 Cygnus OB7 Cygnus OB9 Open Berkeley 86 DR 6 IC 5146 Messier 29 Messier 39 NGC6811NGC 6819 NGC 6834 NGC 6866 NGC 6871 NGC 6910...
The Crescent Nebula (also known as NGC 6888, Caldwell 27, Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away...
"Search for intrinsic variable stars in three open clusters: NGC 1664, NGC6811 and NGC 7209". Communications in Asteroseismology (in German). 146: 21–32...
The North America Nebula (NGC 7000 or Caldwell 20) is an emission nebula in the constellation Cygnus, close to Deneb (the tail of the swan and its brightest...
NGC 6826 (also known as Caldwell 15) is a planetary nebula located in the constellation Cygnus. It is commonly referred to as the "Blinking Planetary"...
NGC 7008 (PK 93+5.2), also known as the Fetus Nebula, is a planetary nebula with a diameter of approximately 1 light-year located at a distance of 2800...
Association Cygnus OB2 Cygnus OB7 Cygnus OB9 Open Berkeley 86 DR 6 IC 5146 Messier 29 Messier 39 NGC6811NGC 6819 NGC 6834 NGC 6866 NGC 6871 NGC 6910...
Association Cygnus OB2 Cygnus OB7 Cygnus OB9 Open Berkeley 86 DR 6 IC 5146 Messier 29 Messier 39 NGC6811NGC 6819 NGC 6834 NGC 6866 NGC 6871 NGC 6910...
Association Cygnus OB2 Cygnus OB7 Cygnus OB9 Open Berkeley 86 DR 6 IC 5146 Messier 29 Messier 39 NGC6811NGC 6819 NGC 6834 NGC 6866 NGC 6871 NGC 6910...
to the left) Amateur image of Sadr (center star) surrounded by IC 1318. NGC 6910 "IC 1318". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved...
just like stars outside open clusters. For example, the open cluster NGC6811 contains two known planetary systems, Kepler-66 and Kepler-67. Additionally...
Association Cygnus OB2 Cygnus OB7 Cygnus OB9 Open Berkeley 86 DR 6 IC 5146 Messier 29 Messier 39 NGC6811NGC 6819 NGC 6834 NGC 6866 NGC 6871 NGC 6910...
Association Cygnus OB2 Cygnus OB7 Cygnus OB9 Open Berkeley 86 DR 6 IC 5146 Messier 29 Messier 39 NGC6811NGC 6819 NGC 6834 NGC 6866 NGC 6871 NGC 6910...
reflection/emission nebula and Caldwell object in the constellation Cygnus. The NGC description refers to IC 5146 as a cluster of 9.5 mag stars involved in a...
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