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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 6:56 
Transit: 11:43 
Sunset: 16:29
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All Constellations » Boötes » 

ε Boötis (epsilon Boötis)

Below the horizon.  Rise: 3:20 | Tran: 11:57 | Set: 20:33
Alt: -1.47°   Az: 40.47°   Direction: North-East

ε Boötis is a multiple main-sequence star of spectral class A2 in the constellation of Boötes.

ε Boötis visual magnitude is 5.12. Because of its faintness, ε Boötis is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Image of ε Boötis (epsilon Boötis) star
DSS2 image of ε Boötis. The red arrow shows the motion of ε Boötis during the next 10000 years (-8.33 arcmin in Right Ascension and 3.50 arcmin in declination);

Celestial Coordinates

Apparent

14h 46m 04s
+26° 58’ 16”
15h 06m 52s
05h 52m 56s

J2000

14h 44m 59s
+27° 04’ 29”

Galactic Coordinates

39.38°
64.78°

Finder Chart

Finder chart ε Boötis (epsilon Boötis) star
Simplified finder chart for ε Boötis (epsilon Boötis).

Magnitude, Color, Spectral Class

5.12
Main-sequence

1.08
A2V
10125K

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

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

Star System Properties

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

5.12
7.72
2.6
2.8 arcsec

Distance, Radial Speed, Proper Motion

ε Boötis is distant 209.65 light years from the Sun and it is moving towards the Sun at the speed of 23 kilometers per second.

64.31
209.65
-23 km/s
-0.05 arcsec/y
0.021"/y

Alternative Designations

ε Boötis
(epsilon Boötis)

Visibility from Your Location

Today's ε Boötis (epsilon Boötis) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 63.0°
Max altitude: 65.5°
Azimuth: 297.0°