40 Boötis
Above the horizon.
Circumpolar today
Alt: 18.44°
Az: 49.45°
Direction: North-East
40 Boötis is a hypergiant star of spectral class F0 in the constellation of Boötes.
40 Boötis visual magnitude is 5.64. Because of its faintness, 40 Boötis is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.
DSS2 image of 40 Boötis. The red arrow shows the motion of 40 Boötis during the next
10000 years (-5.33 arcmin in Right Ascension and 7.00 arcmin in declination);
Celestial Coordinates
Apparent
J2000
Galactic Coordinates
Finder Chart
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Finder chart for 40 Boötis.
Magnitude, Color, Spectral Class
The red dot in the diagram below shows where 40 Boötis is situated in the Hertzsprung–Russell diagram.
H-R diagram showing the position of 40 Boötis.
Attribution: Richard Powell / CC BY-SA
Distance, Radial Speed, Proper Motion
40 Boötis is distant 164.40 light years from the Sun and it is moving far from the Sun at the speed of 12 kilometers per second.
Alternative Designations
Visibility from Your Location
40 Boötis is circumpolar and transits at 22:14 UTC (altitude: 77.7°)