Aljanah - ε Cygni (epsilon Cygni)

Altitude: 70.2° Azimuth: 147.4° Direction: South-South-East

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:

Color of Aljanah ⬤

Magnitude of Aljanah 2.46

Class Hypergiant

VISIBILITY RIGHT NOW

Aljanah - ε Cygni (epsilon Cygni) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 70.2°
Azimuth: 147.4°
Direction: South-South-East

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:

Right Ascension J2000 20h 46m 12s

Declination J2000 +33° 58’ 13”

Galactic Longitude 75.94°

Galactic Latitude -5.71°

Constellation Cygnus

The simplified sky map below shows the position of Aljanah in the sky:

Finder chart Aljanah - ε Cygni (epsilon Cygni) star

Simplified finder chart for Aljanah - ε Cygni (epsilon Cygni).

Visibility of Aljanah from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Aljanah - ε Cygni (epsilon Cygni) rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 56.0° RISE 18:53

Max altitude: 72.5° TRANSIT 4:45

Azimuth: 304.0° SET 14:33

RIGHT NOW Aljanah - ε Cygni (epsilon Cygni) is above the horizon from Greenwich, United Kingdom

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.

Image of Aljanah - ε Cygni (epsilon Cygni) star

DSS2 image of Aljanah. The red arrow shows the motion of Aljanah during the next 1000 years (5.93 arcmin in Right Ascension and 5.47 arcmin in declination);

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.

Distance (parsec) 22.09 pc

Distance (light year) 72.03 ly

Heliocentric radial velocity -11 km/s

Proper Motion RA 0.356 arcsec/year

Proper Motion Dec 0.328 arcsec/year

Spectral properties of Aljanah

Aljanah belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.

Absolute magnitude 0.74

Spectral Type K0III

Color Index (B-V) 1.03

Temperature of Aljanah 4672K

The red dot in the diagram below shows where Aljanah is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of Aljanah. Attribution: Richard Powell / CC BY-SA

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:

Main star magnitude 2.46

Secondary star magnitude 11.76

Magnitude difference 9.3

Separation 54.9 arcsec

Alternative designations of Aljanah

Proper Name Aljanah

Bayer designation ε Cygni
(epsilon Cygni)

Flamsteed designation 53 Cygni

Henry Draper Catalogue HD197989

SAO Catalogue SAO70474

Hipparcos Catalogue HIP102488

Durchmusterung Catalogue BD+33 4018

Gliese Catalogue Gl 806.1A

FK5 Catalogue 780

Aitken Double Star Catalogue ADS14274

In Evidence

Other stars in Cygnus