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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 » 

μ2 Boötis (mu2 Boötis)

Altitude: 17.6°   Azimuth: 51.4°   Direction: North-East

μ2 Boötis is a multiple main-sequence star in the constellation of Boötes.

μ2 Boötis visual magnitude is 6.5. Because of its reltive faintness, μ2 Boötis should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of μ2 Boötis is -0.144 arcsec per year in Right Ascension and 0.094 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of μ2 Boötis (mu2 Boötis) star
DSS2 image of μ2 Boötis. The red arrow shows the motion of μ2 Boötis during the next 1000 years (-2.40 arcmin in Right Ascension and 1.57 arcmin in declination);

Key facts about μ2 Boötis


μ2 Boötis (mu2 Boötis) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 17.6°
Azimuth: 51.4°
Direction: North-East

Celestial coordinates and finder chart of μ2 Boötis

μ2 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 μ2 Boötis are provided in the following table:

15h 24m 30s
+37° 20’ 52”

The simplified sky map below shows the position of μ2 Boötis in the sky:

Finder chart μ2 Boötis (mu2 Boötis) star
Simplified finder chart for μ2 Boötis (mu2 Boötis).

Visibility of μ2 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 μ2 Boötis (mu2 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: 52.7°
Max altitude: 75.9°
Azimuth: 307.3°

Distance of μ2 Boötis from the Sun and relative movement

μ2 Boötis is distant 121.55 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

37.29 pc
121.55 ly
-9 km/s
-0.144 arcsec/year
0.094 arcsec/year

Spectral properties of μ2 Boötis

μ2 Boötis belongs to spectral class G1 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where μ2 Boötis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of μ2 Boötis. Attribution: Richard Powell / CC BY-SA

μ2 Boötis star system properties

μ2 Boötis is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the μ2 Boötis double sysyem:

108.9 arcsec

Alternative designations of μ2 Boötis

μ2 Boötis
(mu2 Boötis)
NN 3904 B