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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 5:51  
clear_day Transit: 12:57  
SunsetSet: 20:04
sunny DaytimeWhat's Visible Now?
All Constellations » Boötes » 

ω Boötis (omega Boötis)

Altitude: 14.9°   Azimuth: 68.4°   Direction: East-North-East

ω Boötis is a giant star in the constellation of Boötes.

ω Boötis visual magnitude is 4.81. Because of its moderate brightness, ω Boötis should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.

The proper motion of ω Boötis is -0.007 arcsec per year in Right Ascension and -0.051 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ω Boötis (omega Boötis) star
DSS2 image of ω Boötis. The red arrow shows the motion of ω Boötis during the next 10000 years (-1.17 arcmin in Right Ascension and -8.50 arcmin in declination);

Key facts about ω Boötis


ω Boötis (omega Boötis) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 14.9°
Azimuth: 68.4°
Direction: East-North-East

Celestial coordinates and finder chart of ω Boötis

ω Boötis 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 ω Boötis are provided in the following table:

15h 02m 06s
+25° 00’ 29”

The simplified sky map below shows the position of ω Boötis in the sky:

Finder chart ω Boötis (omega Boötis) star
Simplified finder chart for ω Boötis (omega Boötis).

Visibility of ω Boötis 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 ω Boötis (omega Boötis) 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: 65.0°
Max altitude: 63.5°
Azimuth: 295.0°

Distance of ω Boötis from the Sun and relative movement

ω Boötis is distant 359.43 light years from the Sun and it is moving far from the Sun at the speed of 14 kilometers per second.

110.25 pc
359.43 ly
14 km/s
-0.007 arcsec/year
-0.051 arcsec/year

Spectral properties of ω Boötis

ω Boötis belongs to spectral class K4 and has a luminosity class of III corresponding to a giant star.


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

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

Alternative designations of ω Boötis

ω Boötis
(omega Boötis)