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: 4:46  
clear_day Transit: 12:56  
SunsetSet: 21:07 south
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All Constellations » Grus » 


HR8635 is a variable and double hypergiant star in the constellation of Grus.

HR8635 visual magnitude is 5.98. Because of its reltive faintness, HR8635 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 HR8635:

HR8635 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR8635

HR8635 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR8635 are provided in the following table:

22h 42m 36s
-47° 12’ 38”

The simplified sky map below shows the position of HR8635 in the sky:

Finder chart HR8635 star
Simplified finder chart for HR8635.

Visibility of HR8635 from your location

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

HR8635 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR8635

The image below is a photograph of HR8635 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 HR8635 is 0.009 arcsec per year in Right Ascension and -0.326 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR8635 star
DSS2 image of HR8635. The red arrow shows the motion of HR8635 during the next 1000 years (0.15 arcmin in Right Ascension and -5.43 arcmin in declination);

Distance of HR8635 from the Sun and relative movement

HR8635 is distant 76.76 light years from the Sun and it is moving far from the Sun at the speed of 17 kilometers per second.

23.55 pc
76.76 ly
17 km/s
0.009 arcsec/year
-0.326 arcsec/year

Spectral properties of HR8635

HR8635 belongs to spectral class G0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR8635 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8635. Attribution: Richard Powell / CC BY-SA

HR8635 star system properties

HR8635 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR8635 double sysyem:

7.8 arcsec

Alternative designations of HR8635

Gl 871 A