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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 5:05 
Transit: 12:56 
Sunset: 20:48
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All Constellations » Perseus » 

π Persei (pi Persei)

Above the horizon.  Circumpolar today
Alt: 27.41°   Az: 59.64°   Direction: East-North-East

π Persei is a main-sequence star of spectral class A2 in the constellation of Perseus.

π Persei visual magnitude is 4.7. Because of its moderate brightness, π 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.

Image of π Persei (pi Persei) star
DSS2 image of π Persei. The red arrow shows the motion of π Persei during the next 10000 years (4.00 arcmin in Right Ascension and -7.17 arcmin in declination);

Celestial Coordinates

Apparent

03h 00m 23s
+39° 45’ 46”
17h 40m 49s
20h 41m 12s

J2000

02h 58m 45s
+39° 39’ 46”

Galactic Coordinates

148.04°
-16.92°

Finder Chart

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Finder chart for π Persei (pi Persei).

Magnitude, Color, Spectral Class

4.7
Main-sequence

-0.30
A2V
9434K

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

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

Distance, Radial Speed, Proper Motion

π Persei is distant 325.35 light years from the Sun and it is moving far from the Sun at the speed of 14 kilometers per second.

99.80
325.35
14 km/s
0.024 arcsec/y
-0.043"/y

Alternative Designations

π Persei
(pi Persei)
SAO56047
SAO56047

Visibility from Your Location

π Persei (pi Persei) is circumpolar and transits at 11:14 UTC (altitude: 78.3°)