ι Persei (iota Persei)

Above the horizon. Rise: 0:44 | Tran: 8:21 | Set: 15:54

Alt: 9.26° Az: 319.55° Direction: North-West

ι Persei is a double hypergiant star of spectral class G0 in the constellation of Perseus.

ι Persei visual magnitude is 4.05. Because of its moderate brightness, ι 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 ι Persei. The red arrow shows the motion of ι Persei during the next 100 years (2.11 arcmin in Right Ascension and -0.15 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 03h 10m 51s

Declination +49° 42’ 33”

Hour Angle 06h 32m 13s

Sidereal Time 09h 43m 05s

J2000

Right Ascension 03h 09m 03s

Declination +49° 36’ 47”

Galactic Coordinates

Galactic Longitude 144.58°

Galactic Latitude -7.39°

Finder Chart

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Finder chart for ι Persei (iota Persei).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.05

Class Hypergiant

Absolute magnitude 3.94

Spectral Type G0V

Color Index (B-V) 0.59

Temperature 6007K

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

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

Star System Properties

ι Persei is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the ι Persei double sysyem:

Main star magnitude 4.05

Secondary star magnitude 12.25

Magnitude difference 8.2

Separation 146.2 arcsec

Distance, Radial Speed, Proper Motion

ι Persei is distant 34.34 light years from the Sun and it is moving far from the Sun at the speed of 50 kilometers per second.

Distance (parsec) 10.53

Distance (light year) 34.34

Radial Speed 50 km/s

Proper Motion RA 1.263 arcsec/y

Proper Motion Dec -0.091"/y

Alternative Designations

Bayer designation ι Persei
(iota Persei)

Henry Draper Catalogue HD19373

SAO Catalogue SAO38597

Hipparcos Catalogue HIP14632

Durchmusterung Catalogue BD+49 857

Gliese Catalogue Gl 124

FK5 Catalogue 112

Visibility from Your Location

Today's ι Persei (iota Persei) rise, transit and set times from Mandasa, India are the following (all times relative to the local timezone Asia/Kolkata):

Azimuth: 40.3° RISE 0:44

Max altitude: 59.2° TRANSIT 8:21

Azimuth: 319.7° SET 15:54

Name:	Mandasa, India
Latitude:	18° 52' 5.9" N
Longitude:	84° 27' 46.8" E
Timezone:	Asia/Kolkata

Set Location

Other stars in Perseus