7 Persei

Above the horizon. Circumpolar today

Alt: 20.30° Az: 11.08° Direction: North

7 Persei is a multiple giant star of spectral class G7 in the constellation of Perseus.

7 Persei visual magnitude is 5.98. Because of its faintness, 7 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.

DSS2 image of 7 Persei. The red arrow shows the motion of 7 Persei during the next 10000 years (-3.17 arcmin in Right Ascension and 1.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 02h 19m 52s

Declination +57° 37’ 57”

Hour Angle 13h 18m 41s

Sidereal Time 15h 38m 33s

J2000

Right Ascension 02h 18m 04s

Declination +57° 31’ 00”

Galactic Coordinates

Galactic Longitude 134.39°

Galactic Latitude -3.42°

Finder Chart

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Finder chart for 7 Persei.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.98

Class Giant

Absolute magnitude -0.71

Spectral Type G7III

Color Index (B-V) 1.05

Temperature 4626K

The red dot in the diagram below shows where 7 Persei is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 7 Persei. Attribution: Richard Powell / CC BY-SA

Star System Properties

7 Persei is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 7 Persei double sysyem:

Main star magnitude 5.98

Secondary star magnitude 8.58

Magnitude difference 2.6

Separation 121.9 arcsec

Distance, Radial Speed, Proper Motion

7 Persei is distant 710.24 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

Distance (parsec) 217.86

Distance (light year) 710.24

Radial Speed -11 km/s

Proper Motion RA -0.019 arcsec/y

Proper Motion Dec 0.006"/y

Alternative Designations

Flamsteed designation 7 Persei

Henry Draper Catalogue HD13994

SAO Catalogue SAO23149

Hipparcos Catalogue HIP10729

Durchmusterung Catalogue BD+56 486

Aitken Double Star Catalogue ADS1753

Visibility from Your Location

7 Persei is circumpolar and transits at 10:30 UTC (altitude: 83.8°)

Set Location

Other stars in Perseus