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public LocationGreenwich, UK
Sunrise: 5:14 
Transit: 13:06 
Sunset: 20:58
sunny   (Daytime)   What's Visible Now?
All Constellations » Perseus » 

55 Persei

Above the horizon.  Rise: 23:20 | Tran: 9:15 | Set: 19:06
Alt: 65.76°   Az: 233.65°   Direction: South-West

55 Persei is a main-sequence star of spectral class B8 in the constellation of Perseus.

55 Persei visual magnitude is 5.73. Because of its faintness, 55 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.

Image of 55 Persei star
DSS2 image of 55 Persei. The red arrow shows the motion of 55 Persei during the next 10000 years (3.17 arcmin in Right Ascension and -7.33 arcmin in declination);

Celestial Coordinates


04h 26m 05s
+34° 11’ 07”
01h 34m 14s
06h 00m 19s


04h 24m 29s
+34° 07’ 50”

Galactic Coordinates


Finder Chart

Finder chart 55 Persei star
Simplified finder chart for 55 Persei.

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where 55 Persei is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 55 Persei. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

55 Persei is distant 610.49 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

5 km/s
0.019 arcsec/y

Alternative Designations


Visibility from Your Location

Today's 55 Persei rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 55.8°
Max altitude: 72.7°
Azimuth: 304.2°