δ Persei (delta Persei)
δ Persei is a variable and double giant star of spectral class B5 in the constellation of Perseus.
δ Persei visual magnitude is 3.01. Because of its moderate brightness, δ Persei is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.
Celestial Coordinates
Apparent
J2000
Galactic Coordinates
Finder Chart
Simplified finder chart for δ Persei (delta Persei).
Magnitude, Color, Spectral Class
The red dot in the diagram below shows where δ Persei is situated in the Hertzsprung–Russell diagram.
Star System Properties
δ Persei 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 δ Persei double sysyem:
Distance, Radial Speed, Proper Motion
δ Persei is distant 527.51 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.
Alternative Designations
Visibility from Your Location
δ Persei (delta Persei) is circumpolar and transits at 03:54 UTC (altitude: 86.4°)