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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
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All Constellations » Boötes » 

ν1 Boötis (nu1 Boötis)

Altitude: 16.7°   Azimuth: 44.0°   Direction: North-East

ν1 Boötis is a giant star in the constellation of Boötes.

ν1 Boötis visual magnitude is 5.02. Because of its reltive faintness, ν1 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 ν1 Boötis is 0.011 arcsec per year in Right Ascension and -0.007 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ν1 Boötis (nu1 Boötis) star
DSS2 image of ν1 Boötis. The red arrow shows the motion of ν1 Boötis during the next 10000 years (1.83 arcmin in Right Ascension and -1.17 arcmin in declination);

Key facts about ν1 Boötis


ν1 Boötis (nu1 Boötis) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 16.7°
Azimuth: 44.0°
Direction: North-East

Celestial coordinates and finder chart of ν1 Boötis

ν1 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 ν1 Boötis are provided in the following table:

15h 30m 55s
+40° 49’ 59”

The simplified sky map below shows the position of ν1 Boötis in the sky:

Finder chart ν1 Boötis (nu1 Boötis) star
Simplified finder chart for ν1 Boötis (nu1 Boötis).

Visibility of ν1 Boötis from your location

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

ν1 Boötis (nu1 Boötis) is circumpolar and transits at 01:32 UTC (altitude: 79.4°)

Distance of ν1 Boötis from the Sun and relative movement

ν1 Boötis is distant 871.66 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

267.38 pc
871.66 ly
-10 km/s
0.011 arcsec/year
-0.007 arcsec/year

Spectral properties of ν1 Boötis

ν1 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 ν1 Boötis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of ν1 Boötis. Attribution: Richard Powell / CC BY-SA

Alternative designations of ν1 Boötis

ν1 Boötis
(nu1 Boötis)