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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: 7:48  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
wb_twilight Nautical TwilightWhat's Visible Now?
All Constellations » Pegasus » 


Altitude: -17.7°   Azimuth: 17.5°   Direction: North-North-East

HR8691 is a hypergiant star in the constellation of Pegasus.

HR8691 visual magnitude is 6.4. Because of its reltive faintness, HR8691 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 HR8691:


HR8691 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -17.7°
Azimuth: 17.5°
Direction: North-North-East

Celestial coordinates and finder chart of HR8691

HR8691 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 HR8691 are provided in the following table:

22h 50m 39s
+19° 08’ 26”

The simplified sky map below shows the position of HR8691 in the sky:

Finder chart HR8691 star
Simplified finder chart for HR8691.

Visibility of HR8691 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 HR8691 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: 70.9°
Max altitude: 57.7°
Azimuth: 289.1°

Digitized Sky Survey image of HR8691

The image below is a photograph of HR8691 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 HR8691 is 0.05 arcsec per year in Right Ascension and -0.02 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8691 star
DSS2 image of HR8691. The red arrow shows the motion of HR8691 during the next 10000 years (8.33 arcmin in Right Ascension and -3.33 arcmin in declination);

Distance of HR8691 from the Sun and relative movement

HR8691 is distant 519.94 light years from the Sun and it is moving towards the Sun at the speed of 39 kilometers per second.

159.49 pc
519.94 ly
-39 km/s
0.05 arcsec/year
-0.02 arcsec/year

Spectral properties of HR8691

HR8691 belongs to spectral class K0


The red dot in the diagram below shows where HR8691 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8691. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8691