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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:15 
Transit: 13:06 
Sunset: 20:56
sunny   (Daytime)   What's Visible Now?
All Constellations » Perseus » 

ζ Persei (zeta Persei)

Above the horizon.  Rise: 23:14 | Tran: 8:41 | Set: 18:04
Alt: 6.37°   Az: 315.64°   Direction: North-West

ζ Persei is a variable and multiple supergiant star of spectral class B1 in the constellation of Perseus.

ζ Persei visual magnitude is 2.85. Because of its brightness, ζ Persei 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.

Image of ζ Persei (zeta Persei) star
DSS2 image of ζ Persei. The red arrow shows the motion of ζ Persei during the next 10000 years (1.00 arcmin in Right Ascension and -1.67 arcmin in declination);

Celestial Coordinates

Apparent

03h 55m 40s
+31° 57’ 16”
08h 20m 03s
12h 15m 44s

J2000

03h 54m 07s
+31° 53’ 00”

Galactic Coordinates

162.29°
-16.69°

Finder Chart

Finder chart ζ Persei (zeta Persei) star
Simplified finder chart for ζ Persei (zeta Persei).

Magnitude, Color, Spectral Class

2.85
Supergiant

-4.54
B1I
8839K

The red dot in the diagram below shows where ζ Persei is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of ζ Persei. Attribution: Richard Powell / CC BY-SA

Star System Properties

ζ 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 ζ Persei double sysyem:

2.85
9.35
6.5
12.9 arcsec

Distance, Radial Speed, Proper Motion

ζ Persei is distant 981.93 light years from the Sun and it is moving far from the Sun at the speed of 20 kilometers per second.

301.20
981.93
20 km/s
0.006 arcsec/y
-0.01"/y

Alternative Designations

ζ Persei
(zeta Persei)
SAO56799
SAO56799

Visibility from Your Location

Today's ζ Persei (zeta Persei) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 58.0°
Max altitude: 70.5°
Azimuth: 302.0°