ι Pegasi (iota Pegasi)

ι Pegasi is a variable and double main-sequence star in the constellation of Pegasus.

ι Pegasi visual magnitude is 3.76. Because of its moderate brightness, ι Pegasi should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about ι Pegasi:

Color of ι Pegasi ⬤

Magnitude of ι Pegasi 3.76

Class Main-sequence

VISIBILITY RIGHT NOW ι Pegasi (iota Pegasi) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 54°.

Celestial coordinates and finder chart of ι Pegasi

ι Pegasi is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of ι Pegasi are provided in the following table:

Right Ascension J2000 22h 07m 00s

Declination J2000 +25° 20’ 41”

Galactic Longitude 82.26°

Galactic Latitude -24.26°

Constellation Pegasus

The simplified sky map below shows the position of ι Pegasi in the sky:

Finder chart ι Pegasi (iota Pegasi) star

Simplified finder chart for ι Pegasi (iota Pegasi).

Visibility of ι Pegasi from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's ι Pegasi (iota Pegasi) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 64.7° RISE 2:01

Max altitude: 63.9° TRANSIT 10:25

Azimuth: 295.3° SET 18:48

RIGHT NOW ι Pegasi (iota Pegasi) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of ι Pegasi

The image below is a photograph of ι Pegasi from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of ι Pegasi is 0.298 arcsec per year in Right Ascension and 0.025 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of ι Pegasi. The red arrow shows the motion of ι Pegasi during the next 1000 years (4.97 arcmin in Right Ascension and 0.42 arcmin in declination);

Distance of ι Pegasi from the Sun and relative movement

ι Pegasi is distant 38.33 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.

Distance (parsec) 11.76 pc

Distance (light year) 38.33 ly

Heliocentric radial velocity -4 km/s

Proper Motion RA 0.298 arcsec/year

Proper Motion Dec 0.025 arcsec/year

Spectral properties of ι Pegasi

ι Pegasi belongs to spectral class F5 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 3.41

Spectral Type F5V

Color Index (B-V) 0.44

Temperature of ι Pegasi 6674K

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

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

ι Pegasi star system properties

ι Pegasi 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 Pegasi double sysyem:

Main star magnitude 3.76

Secondary star magnitude 11.16

Magnitude difference 7.4

Separation 103.7 arcsec

Alternative designations of ι Pegasi

Bayer designation ι Pegasi
(iota Pegasi)

Flamsteed designation 24 Pegasi

Henry Draper Catalogue HD210027

SAO Catalogue SAO90238

Hipparcos Catalogue HIP109176

Durchmusterung Catalogue BD+24 4533

Gliese Catalogue Gl 848

FK5 Catalogue 831

General Catalogue of Variable Stars 14034

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Other stars in Pegasus