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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 » 

50 Boötis

Altitude: 20.6°   Azimuth: 62.5°   Direction: East-North-East

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

50 Boötis visual magnitude is 5.37. Because of its reltive faintness, 50 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 50 Boötis is -0.051 arcsec per year in Right Ascension and 0.017 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 50 Boötis star
DSS2 image of 50 Boötis. The red arrow shows the motion of 50 Boötis during the next 10000 years (-8.50 arcmin in Right Ascension and 2.83 arcmin in declination);

Key facts about 50 Boötis


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

Altitude: 20.6°
Azimuth: 62.5°
Direction: East-North-East

Celestial coordinates and finder chart of 50 Boötis

50 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 50 Boötis are provided in the following table:

15h 21m 48s
+32° 56’ 02”

The simplified sky map below shows the position of 50 Boötis in the sky:

Finder chart 50 Boötis star
Simplified finder chart for 50 Boötis.

Visibility of 50 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 50 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: 57.1°
Max altitude: 71.5°
Azimuth: 302.9°

Distance of 50 Boötis from the Sun and relative movement

50 Boötis is distant 246.97 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

75.76 pc
246.97 ly
-7 km/s
-0.051 arcsec/year
0.017 arcsec/year

Spectral properties of 50 Boötis

50 Boötis belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where 50 Boötis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 50 Boötis. Attribution: Richard Powell / CC BY-SA

Alternative designations of 50 Boötis