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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:23 
Transit: 12:14 
Sunset: 17:05
wb_twilight   (Astronomical Twilight)  
What's Visible Now • Tonight Timeline
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All Constellations » Pegasus » 

σ Pegasi (sigma Pegasi)

Above the horizon.  Rise: 6:41 | Tran: 13:30 | Set: 20:18
Alt: 13.07°   Az: 269.64°   Direction: West

σ Pegasi is a double sub-giant star of spectral class F7 in the constellation of Pegasus.

σ Pegasi visual magnitude is 5.16. Because of its faintness, σ Pegasi 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.

Image of σ Pegasi (sigma Pegasi) star
DSS2 image of σ Pegasi. The red arrow shows the motion of σ Pegasi during the next 1000 years (8.70 arcmin in Right Ascension and 0.73 arcmin in declination);

Celestial Coordinates

Apparent

22h 53m 39s
+09° 58’ 09”
05h 25m 59s
04h 19m 38s

J2000

22h 52m 24s
+09° 50’ 08”

Galactic Coordinates

80.87°
-43.1°

Finder Chart

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Finder chart for σ Pegasi (sigma Pegasi).

Magnitude, Color, Spectral Class

5.16
Sub-giant

3.02
F7IV
6481K

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

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

Star System Properties

σ 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 σ Pegasi double sysyem:

5.16
13.56
8.4
248 arcsec

Distance, Radial Speed, Proper Motion

σ Pegasi is distant 87.52 light years from the Sun and it is moving far from the Sun at the speed of 12 kilometers per second.

26.85
87.52
12 km/s
0.522 arcsec/y
0.044"/y

Alternative Designations

σ Pegasi
(sigma Pegasi)
SAO127810
SAO127810
Wo 9801 A

Visibility from Your Location

Today's σ Pegasi (sigma Pegasi) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 80.0°
Max altitude: 48.5°
Azimuth: 280.0°