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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:54  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
wb_twilight Astronomical TwilightWhat's Visible Now?
All Constellations » Pegasus » 


Altitude: -23.5°   Azimuth: 9.1°   Direction: North

HR8631 is a multiple main-sequence star in the constellation of Pegasus.

HR8631 visual magnitude is 5.71. Because of its reltive faintness, HR8631 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR8631:


HR8631 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -23.5°
Azimuth: 9.1°
Direction: North

Celestial coordinates and finder chart of HR8631

HR8631 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 HR8631 are provided in the following table:

22h 40m 52s
+14° 32’ 57”

The simplified sky map below shows the position of HR8631 in the sky:

Finder chart HR8631 star
Simplified finder chart for HR8631.

Visibility of HR8631 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 HR8631 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: 75.5°
Max altitude: 53.1°
Azimuth: 284.5°

Digitized Sky Survey image of HR8631

The image below is a photograph of HR8631 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 HR8631 is 0.268 arcsec per year in Right Ascension and 0.144 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR8631 star
DSS2 image of HR8631. The red arrow shows the motion of HR8631 during the next 1000 years (4.47 arcmin in Right Ascension and 2.40 arcmin in declination);

Distance of HR8631 from the Sun and relative movement

HR8631 is distant 106.92 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

32.80 pc
106.92 ly
-10 km/s
0.268 arcsec/year
0.144 arcsec/year

Spectral properties of HR8631

HR8631 belongs to spectral class G4 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR8631 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8631. Attribution: Richard Powell / CC BY-SA

HR8631 star system properties

HR8631 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 HR8631 double sysyem:

0.4 arcsec

Alternative designations of HR8631