φ Persei (phi Persei)

Above the horizon. Circumpolar today

Alt: 53.35° Az: 293.36° Direction: West-North-West

φ Persei is a variable main-sequence star of spectral class B2 in the constellation of Perseus.

φ Persei visual magnitude is 4.07. Because of its moderate brightness, φ 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.

DSS2 image of φ Persei. The red arrow shows the motion of φ Persei during the next 10000 years (4.33 arcmin in Right Ascension and -2.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 01h 45m 15s

Declination +50° 48’ 55”

Hour Angle 04h 00m 33s

Sidereal Time 05h 45m 49s

J2000

Right Ascension 01h 43m 39s

Declination +50° 41’ 18”

Galactic Coordinates

Galactic Longitude 131.32°

Galactic Latitude -11.33°

Finder Chart

Loading map...

Finder chart for φ Persei (phi Persei).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.07

Class Main-sequence

Absolute magnitude -2.64

Spectral Type B2V

Color Index (B-V) -0.04

Temperature 10653K

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

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

Distance, Radial Speed, Proper Motion

φ Persei is distant 716.48 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.

Distance (parsec) 219.78

Distance (light year) 716.48

Radial Speed 1 km/s

Proper Motion RA 0.026 arcsec/y

Proper Motion Dec -0.014"/y

Alternative Designations

Bayer designation φ Persei
(phi Persei)

Henry Draper Catalogue HD10516

SAO Catalogue SAO22554

Hipparcos Catalogue HIP8068

Durchmusterung Catalogue BD+49 444

FK5 Catalogue 57

General Catalogue of Variable Stars Phi Per

Visibility from Your Location

φ Persei (phi Persei) is circumpolar and transits at 09:52 UTC (altitude: 89.3°)

Set Location

Other stars in Perseus