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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:21 
Transit: 12:14 
Sunset: 17:07
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All Constellations » Perseus » 

31 Persei

Above the horizon.  Circumpolar today
Alt: 42.26°   Az: 58.33°   Direction: East-North-East

31 Persei is a main-sequence star of spectral class B5 in the constellation of Perseus.

31 Persei visual magnitude is 5.03. Because of its faintness, 31 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 31 Persei star
DSS2 image of 31 Persei. The red arrow shows the motion of 31 Persei during the next 10000 years (3.83 arcmin in Right Ascension and -4.17 arcmin in declination);

Celestial Coordinates

Apparent

03h 20m 55s
+50° 11’ 05”
18h 41m 19s
22h 02m 14s

J2000

03h 19m 07s
+50° 05’ 41”

Galactic Coordinates

145.74°
-6.12°

Finder Chart

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Finder chart for 31 Persei.

Magnitude, Color, Spectral Class

5.03
Main-sequence

-0.81
B5V
10941K

The red dot in the diagram below shows where 31 Persei is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of 31 Persei. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

31 Persei is distant 480.83 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

147.49
480.83
3 km/s
0.023 arcsec/y
-0.025"/y

Alternative Designations

SAO38714
SAO38714

Visibility from Your Location

31 Persei is circumpolar and transits at 17:52 UTC (altitude: 88.7°)