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  2. NGC 6826 - Wikipedia

    en.wikipedia.org/wiki/NGC_6826

    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", although many other nebulae exhibit such "blinking". When viewed through a small telescope, the brightness of the central star overwhelms the eye when viewed directly, obscuring the surrounding ...

  3. List of O-type stars - Wikipedia

    en.wikipedia.org/wiki/List_of_O-type_stars

    It is the central star of NGC 6826 Planetary Nebula. HD 49798: 2120.02: 1: sdO6p: 8.287: Delta Circini: ... It is the central star of NGC 2392 Planetary Nebula. WR 25 ...

  4. New General Catalogue - Wikipedia

    en.wikipedia.org/wiki/New_General_Catalogue

    The New General Catalogue of Nebulae and Clusters of Stars (abbreviated NGC) is an astronomical catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, including galaxies , star clusters and emission nebulae .

  5. Cygnus (constellation) - Wikipedia

    en.wikipedia.org/wiki/Cygnus_(constellation)

    The North America Nebula (NGC 7000) is one of the most well-known nebulae in Cygnus. NGC 6826, the Blinking Planetary Nebula, is a planetary nebula with a magnitude of 8.5, 3200 light-years from Earth.

  6. 16 Cygni - Wikipedia

    en.wikipedia.org/wiki/16_Cygni

    16 Cygni A BD+50 2847, GCTP 4634.00, GJ 765.1 A, HD 186408, HIP 96895, HR 7503, LTT 15750, SAO 31898, Struve 4046A, Gaia DR3 2135550755683405952 16 Cygni B BD+50 2848, GJ 765.1 B, HD 186427, HIP 96901, HR 7504, LTT 15751, SAO 31899, Struve 4046B, KIC 12069449, Gaia DR3 2135550755683407232

  7. NGC 6820 and NGC 6823 - Wikipedia

    en.wikipedia.org/wiki/NGC_6820_and_NGC_6823

    NGC 6820 is a small reflection nebula near the open cluster NGC 6823 in Vulpecula. The reflection nebula and cluster are embedded in a large faint emission nebula called Sh 2-86. The whole area of nebulosity is often referred to as NGC 6820. [3] M27, the Dumbbell Nebula, is found three degrees to the east, and α Vulpeculae three degrees to the ...

  8. NGC 6811 - Wikipedia

    en.wikipedia.org/wiki/NGC_6811

    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 .

  9. NGC 6866 - Wikipedia

    en.wikipedia.org/wiki/NGC_6866

    NGC 6866 is a young [5] open cluster of stars in the northern constellation Cygnus. It was discovered by German astronomer Caroline Herschel on 23 July 1783. [ 3 ] This cluster is located at an estimated distance of 4.35 ± 0.53 thousand light-years from the Sun , [ 2 ] and is circling the galactic center with a slight orbital eccentricity of 0 ...