9 Persei
9 Persei is a variable and double supergiant star of spectral class A2 in the constellation of Perseus.
9 Persei visual magnitude is 5.17. Because of its faintness, 9 Persei 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.
Celestial Coordinates
Apparent
J2000
Galactic Coordinates
Finder Chart
Simplified finder chart for 9 Persei.
Magnitude, Color, Spectral Class
The red dot in the diagram below shows where 9 Persei is situated in the Hertzsprung–Russell diagram.
Star System Properties
9 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 9 Persei double sysyem:
Distance, Radial Speed, Proper Motion
9 Persei is distant 2,050.31 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.
Alternative Designations
Visibility from Your Location
9 Persei is circumpolar and transits at 03:13 UTC (altitude: 85.5°)