We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Help keep this site free and ads-free! Donate Now!
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 » 

15 Boötis

Altitude: 14.0°   Azimuth: 91.3°   Direction: East

15 Boötis is a double giant star in the constellation of Boötes.

15 Boötis visual magnitude is 5.29. Because of its reltive faintness, 15 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 15 Boötis is -0.028 arcsec per year in Right Ascension and -0.167 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 15 Boötis star
DSS2 image of 15 Boötis. The red arrow shows the motion of 15 Boötis during the next 1000 years (-0.47 arcmin in Right Ascension and -2.78 arcmin in declination);

Key facts about 15 Boötis


15 Boötis is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 14.0°
Azimuth: 91.3°
Direction: East

Celestial coordinates and finder chart of 15 Boötis

15 Boötis is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 15 Boötis are provided in the following table:

14h 14m 50s
+10° 06’ 02”

The simplified sky map below shows the position of 15 Boötis in the sky:

Finder chart 15 Boötis star
Simplified finder chart for 15 Boötis.

Visibility of 15 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 15 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: 79.9°
Max altitude: 48.6°
Azimuth: 280.1°

Distance of 15 Boötis from the Sun and relative movement

15 Boötis is distant 254.89 light years from the Sun and it is moving far from the Sun at the speed of 17 kilometers per second.

78.19 pc
254.89 ly
17 km/s
-0.028 arcsec/year
-0.167 arcsec/year

Spectral properties of 15 Boötis

15 Boötis belongs to spectral class K1 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 15 Boötis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 15 Boötis. Attribution: Richard Powell / CC BY-SA

15 Boötis star system properties

15 Boötis is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the 15 Boötis double sysyem:

1.1 arcsec

Alternative designations of 15 Boötis