Reflection Nebula IC 5076

IC 5076: Reflection nebula in Cygnus; 500 mm Cassegrain f=3625mm / f7.2; SBIG STL11K; 105+3*30 min LRGB; Bernese Highlands; © 2011 Radek Chromik


The British astronomer Isaac Roberts discovered a nebula around the approximately 5 mag bright star V2140 Cygni on 13rd September 1895. This was included in 1910 by the Danish-Irish astronomer John L. E. Dreyer in his «Second Index Catalogue of Nebulae and Clusters of Stars» published in 1910 under the designation IC 5076. [196, 315] The Canadian astronomer Sidney van den Bergh identified this nebula as a reflection nebula on the photo plates of the «Palomar Sky Survey» and included it under the name vdB 137 in his 1966 catalog of reflection nebulae. He noted: Type II (star outside the nebula), very bright, very blue, moderate absorption, radius 6.8 arcminutes (red) to 4.8 arcminutes (blue). [255]

Physical Properties

The star V2140 Cygni (HD 199478) is a blue supergiant of the spectral type B8Ia and belongs to the pulsating variables. Its brightness fluctuates by 0.1 magnitudes over the course of 27 to 55 days. [145, 366]

Revised+Historic NGC/IC, Version 22/9, © Dr. Wolfgang Steinicke [277]
DesignationIC 5076
Right Ascension (J2000.0)20h 55m 33.0s
Declination (J2000.0)+47° 23' 42"
Diameter9 × 7 arcmin
Metric Distance1.750 kpc
Dreyer DescriptionvF, vL, lE ns, st inv
Identification, RemarksLBN 394, CED 185

Finder Chart

The galactic nebula IC 5076 is located in the constellation Cygnus (Swan), which is best visible from April to November.

Finder Chart Reflection Nebula IC 5076
Reflection Nebula IC 5076 in constellation Cygnus. Charts created using SkySafari 6 Pro and STScI Digitized Sky Survey. Limiting magnitudes: Constellation chart ~6.5 mag, DSS2 close-ups ~20 mag. [149, 160]

Visual Observation

Description pending ...

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