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: 4:47  
clear_day Transit: 12:56  
SunsetSet: 21:06 south
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All Constellations » Grus » 


HR8440 is a giant star in the constellation of Grus.

HR8440 visual magnitude is 6.43. Because of its reltive faintness, HR8440 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 HR8440:

HR8440 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR8440

HR8440 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 HR8440 are provided in the following table:

22h 09m 57s
-48° 06’ 25”

The simplified sky map below shows the position of HR8440 in the sky:

Finder chart HR8440 star
Simplified finder chart for HR8440.

Visibility of HR8440 from your location

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

HR8440 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR8440

The image below is a photograph of HR8440 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 HR8440 is 0.077 arcsec per year in Right Ascension and -0.047 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8440 star
DSS2 image of HR8440. The red arrow shows the motion of HR8440 during the next 10000 years (12.83 arcmin in Right Ascension and -7.83 arcmin in declination);

Distance of HR8440 from the Sun and relative movement

HR8440 is distant 686.32 light years from the Sun and it is moving far from the Sun at the speed of 19 kilometers per second.

210.53 pc
686.32 ly
19 km/s
0.077 arcsec/year
-0.047 arcsec/year

Spectral properties of HR8440

HR8440 belongs to spectral class K3 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR8440 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8440. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8440