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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: 7:03  
clear_day Transit: 12:12  
SunsetSet: 17:22
sleep NighttimeWhat's Visible Now?
All Constellations » Boötes » 

Seginus - γ Boötis (gamma Boötis)

Altitude: 30.4°   Azimuth: 65.4°   Direction: East-North-East

Seginus, also designated as γ Boötis (gamma Boötis), is a variable and multiple giant star in the constellation of Boötes.

Seginus visual magnitude is 3.03. Because of its moderate brightness, Seginus 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 proper motion of Seginus is -0.114 arcsec per year in Right Ascension and 0.153 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of Seginus - γ Boötis (gamma Boötis) star
DSS2 image of Seginus. The red arrow shows the motion of Seginus during the next 1000 years (-1.90 arcmin in Right Ascension and 2.55 arcmin in declination);

Key facts about Seginus


Seginus - γ Boötis (gamma Boötis) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 30.4°
Azimuth: 65.4°
Direction: East-North-East

Celestial coordinates and finder chart of Seginus

Seginus 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 Seginus are provided in the following table:

14h 32m 04s
+38° 18’ 29”

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

Finder chart Seginus - γ Boötis (gamma Boötis) star
Simplified finder chart for Seginus - γ Boötis (gamma Boötis).

Visibility of Seginus 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 Seginus - γ Boötis (gamma 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: 51.7°
Max altitude: 76.8°
Azimuth: 308.3°

Distance of Seginus from the Sun and relative movement

Seginus is distant 85.14 light years from the Sun and it is moving towards the Sun at the speed of 37 kilometers per second.

26.12 pc
85.14 ly
-37 km/s
-0.114 arcsec/year
0.153 arcsec/year

Spectral properties of Seginus

Seginus belongs to spectral class A7 and has a luminosity class of III corresponding to a giant star.


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

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

Seginus star system properties

Seginus 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 Seginus double sysyem:

33.4 arcsec

Alternative designations of Seginus

γ Boötis
(gamma Boötis)