ε Draconis (epsilon Draconis)

ε Draconis is a variable and double giant star in the constellation of Draco.

ε Draconis visual magnitude is 3.83. Because of its moderate brightness, ε Draconis should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about ε Draconis:

Color of ε Draconis ⬤

Magnitude of ε Draconis 3.83

Class Giant

VISIBILITY RIGHT NOW ε Draconis (epsilon Draconis) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 50°.

Celestial coordinates and finder chart of ε Draconis

ε Draconis is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of ε Draconis are provided in the following table:

Right Ascension J2000 19h 48m 10s

Declination J2000 +70° 16’ 04”

Galactic Longitude 102.43°

Galactic Latitude 20.83°

Constellation Draco

The simplified sky map below shows the position of ε Draconis in the sky:

Finder chart ε Draconis (epsilon Draconis) star

Simplified finder chart for ε Draconis (epsilon Draconis).

Visibility of ε Draconis from your location

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

ε Draconis (epsilon Draconis) is circumpolar and transits at 07:49 UTC (altitude: 71.2°)

Digitized Sky Survey image of ε Draconis

The image below is a photograph of ε Draconis 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 ε Draconis is 0.082 arcsec per year in Right Ascension and 0.037 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ε Draconis (epsilon Draconis) star

DSS2 image of ε Draconis. The red arrow shows the motion of ε Draconis during the next 10000 years (13.67 arcmin in Right Ascension and 6.17 arcmin in declination);

Distance of ε Draconis from the Sun and relative movement

ε Draconis is distant 145.54 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

Distance (parsec) 44.64 pc

Distance (light year) 145.54 ly

Heliocentric radial velocity 3 km/s

Proper Motion RA 0.082 arcsec/year

Proper Motion Dec 0.037 arcsec/year

Spectral properties of ε Draconis

ε Draconis belongs to spectral class G7 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.58

Spectral Type G7III

Color Index (B-V) 0.89

Temperature of ε Draconis 5023K

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

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

ε Draconis star system properties

ε Draconis is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the ε Draconis double sysyem:

Main star magnitude 3.83

Secondary star magnitude 7.03

Magnitude difference 3.2

Separation 3.2 arcsec

Alternative designations of ε Draconis

Bayer designation ε Draconis
(epsilon Draconis)

Flamsteed designation 63 Draconis

Henry Draper Catalogue HD188119

SAO Catalogue SAO9540

Hipparcos Catalogue HIP97433

Durchmusterung Catalogue BD+69 1070

General Catalogue of Variable Stars 12465

Aitken Double Star Catalogue ADS13007

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Other stars in Draco