Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:43  
clear_day Transit: 12:58  
SunsetSet: 21:12 south
wb_twilight Nautical TwilightWhat's Visible Now
All Constellations » Pegasus » 

ο Pegasi (omicron Pegasi)

Altitude: 43.9°   Azimuth: 96.8°   Direction: East

ο Pegasi is a sub-giant star in the constellation of Pegasus.

ο Pegasi visual magnitude is 4.79. Because of its moderate brightness, ο 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 ο Pegasi:


ο Pegasi (omicron Pegasi) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 43.9°
Azimuth: 96.8°
Direction: East

Celestial coordinates and finder chart of ο Pegasi

ο 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 ο Pegasi are provided in the following table:

22h 41m 45s
+29° 18’ 27”

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

Finder chart ο Pegasi (omicron Pegasi) star
Simplified finder chart for ο Pegasi (omicron Pegasi).

Visibility of ο Pegasi from your location

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

Today's ο Pegasi (omicron Pegasi) rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 60.7°
Max altitude: 67.8°
Azimuth: 299.3°
ο Pegasi (omicron Pegasi) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of ο Pegasi

The image below is a photograph of ο 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 ο Pegasi is -0.004 arcsec per year in Right Ascension and -0.027 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ο Pegasi (omicron Pegasi) star
DSS2 image of ο Pegasi. The red arrow shows the motion of ο Pegasi during the next 10000 years (-0.67 arcmin in Right Ascension and -4.50 arcmin in declination);

Distance of ο Pegasi from the Sun and relative movement

ο Pegasi is distant 304.67 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

93.46 pc
304.67 ly
9 km/s
-0.004 arcsec/year
-0.027 arcsec/year

Spectral properties of ο Pegasi

ο Pegasi belongs to spectral class A1 and has a luminosity class of IV corresponding to a sub-giant star.


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

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

Alternative designations of ο Pegasi

ο Pegasi
(omicron Pegasi)