Alkarab - υ Pegasi (upsilon Pegasi)

Alkarab, also designated as υ Pegasi (upsilon Pegasi), is a giant star in the constellation of Pegasus.

Alkarab visual magnitude is 4.4. Because of its moderate brightness, Alkarab 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 Alkarab:

Color of Alkarab ⬤

Magnitude of Alkarab 4.4

Class Giant

VISIBILITY RIGHT NOW Alkarab - υ Pegasi (upsilon Pegasi) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of Alkarab

Alkarab is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Alkarab are provided in the following table:

Right Ascension J2000 23h 25m 22s

Declination J2000 +23° 24’ 15”

Galactic Longitude 98.55°

Galactic Latitude -35.36°

Constellation Pegasus

The simplified sky map below shows the position of Alkarab in the sky:

Finder chart Alkarab - υ Pegasi (upsilon Pegasi) star

Simplified finder chart for Alkarab - υ Pegasi (upsilon Pegasi).

Visibility of Alkarab from your location

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

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

Azimuth: 66.6° RISE 3:17

Max altitude: 61.9° TRANSIT 11:26

Azimuth: 293.4° SET 19:35

RIGHT NOW Alkarab - υ Pegasi (upsilon Pegasi) is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of Alkarab

The image below is a photograph of Alkarab 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 Alkarab is 0.193 arcsec per year in Right Ascension and 0.037 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of Alkarab - υ Pegasi (upsilon Pegasi) star

DSS2 image of Alkarab. The red arrow shows the motion of Alkarab during the next 1000 years (3.22 arcmin in Right Ascension and 0.62 arcmin in declination);

Distance of Alkarab from the Sun and relative movement

Alkarab is distant 173.13 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

Distance (parsec) 53.11 pc

Distance (light year) 173.13 ly

Heliocentric radial velocity -11 km/s

Proper Motion RA 0.193 arcsec/year

Proper Motion Dec 0.037 arcsec/year

Spectral properties of Alkarab

Alkarab belongs to spectral class F8 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.77

Spectral Type F8III

Color Index (B-V) 0.61

Temperature of Alkarab 5929K

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

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

Alternative designations of Alkarab

Proper Name Alkarab

Bayer designation υ Pegasi
(upsilon Pegasi)

Flamsteed designation 68 Pegasi

Henry Draper Catalogue HD220657

SAO Catalogue SAO91253

Hipparcos Catalogue HIP115623

Durchmusterung Catalogue BD+22 4833

FK5 Catalogue 881

How to support us

In Evidence

Other stars in Pegasus