Aljanah - ε Cygni (epsilon Cygni)
Aljanah, also designated as ε Cygni (epsilon Cygni), is a multiple hypergiant star in the constellation of Cygnus.
Aljanah visual magnitude is 2.46, making it the 89th brightest star in the sky. Thanks to its high brightness, Aljanah is clearly visible when observed from locations with dark skyes, and should be also quite easily visible from light polluted areas.
The table below summarizes the key facts about Aljanah:
Celestial coordinates and finder chart of Aljanah
Aljanah is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Aljanah are provided in the following table:
The simplified sky map below shows the position of Aljanah in the sky:
Visibility of Aljanah from your location
Digitized Sky Survey image of Aljanah
The image below is a photograph of Aljanah from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of Aljanah is 0.356 arcsec per year in Right Ascension and 0.328 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of Aljanah from the Sun and relative movement
Aljanah is distant 72.03 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.
Spectral properties of Aljanah
Aljanah belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.
The red dot in the diagram below shows where Aljanah is situated in the Hertzsprung–Russell diagram.
Aljanah star system properties
Aljanah is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the Aljanah double sysyem: