4 Herculis
Above the horizon.
Circumpolar today
Alt: 29.30°
Az: 302.60°
Direction: West-North-West
4 Herculis is a variable star of spectral class B9 in the constellation of Hercules.
4 Herculis visual magnitude is 5.75. Because of its faintness, 4 Herculis 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 4 Herculis. The red arrow shows the motion of 4 Herculis during the next
10000 years (-4.17 arcmin in Right Ascension and 2.50 arcmin in declination);
Celestial Coordinates
Apparent
J2000
Galactic Coordinates
Finder Chart
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Finder chart for 4 Herculis.
Magnitude, Color, Spectral Class
The red dot in the diagram below shows where 4 Herculis is situated in the Hertzsprung–Russell diagram.
H-R diagram showing the position of 4 Herculis.
Attribution: Richard Powell / CC BY-SA
Distance, Radial Speed, Proper Motion
4 Herculis is distant 481.54 light years from the Sun and it is moving towards the Sun at the speed of 17 kilometers per second.
Alternative Designations
Visibility from Your Location
4 Herculis is circumpolar and transits at 00:00 UTC (altitude: 81.0°)