Alnilam - ε Orionis (epsilon Orionis)
Alnilam, also designated as ε Orionis (epsilon Orionis), is a variable and double hypergiant star of spectral class B0 in the constellation of Orion.
Alnilam visual magnitude is 1.7, making it the 28th brightest star in the sky. Because of its brightness, Alnilam is clearly visible to the naked eye when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.
Celestial Coordinates
Apparent
J2000
Galactic Coordinates
Finder Chart
Magnitude, Color, Spectral Class
The red dot in the diagram below shows where Alnilam is situated in the Hertzsprung–Russell diagram.
Star System Properties
Alnilam is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the Alnilam double sysyem:
Distance, Radial Speed, Proper Motion
Alnilam is distant 1,341.56 light years from the Sun and it is moving far from the Sun at the speed of 26 kilometers per second.
Alternative Designations
Visibility from Your Location
Today's Alnilam - ε Orionis (epsilon Orionis) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):