Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
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HR8771 is a hypergiant star in the constellation of Grus.

HR8771 visual magnitude is 5.79. Because of its reltive faintness, HR8771 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 HR8771:

HR8771 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR8771

HR8771 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 HR8771 are provided in the following table:

23h 03m 59s
-41° 28’ 41”

The simplified sky map below shows the position of HR8771 in the sky:

Finder chart HR8771 star
Simplified finder chart for HR8771.

Visibility of HR8771 from your location

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

HR8771 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR8771

The image below is a photograph of HR8771 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 HR8771 is 0.006 arcsec per year in Right Ascension and 0.069 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8771 star
DSS2 image of HR8771. The red arrow shows the motion of HR8771 during the next 10000 years (1.00 arcmin in Right Ascension and 11.50 arcmin in declination);

Distance of HR8771 from the Sun and relative movement

HR8771 is distant 300.74 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

92.25 pc
300.74 ly
-15 km/s
0.006 arcsec/year
0.069 arcsec/year

Spectral properties of HR8771

HR8771 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR8771 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8771. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8771