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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: 7:45  
clear_day Transit: 11:48  
SunsetSet: 15:51 south
sleep NighttimeWhat's Visible Now?
All Constellations » Libra » 


Altitude: -41.6°   Azimuth: 285.8°   Direction: West-North-West

HR5806 is a hypergiant star in the constellation of Libra.

HR5806 visual magnitude is 5.78. Because of its reltive faintness, HR5806 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 HR5806:


HR5806 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -41.6°
Azimuth: 285.8°
Direction: West-North-West

Celestial coordinates and finder chart of HR5806

HR5806 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 HR5806 are provided in the following table:

15h 37m 48s
-23° 08’ 30”

The simplified sky map below shows the position of HR5806 in the sky:

Finder chart HR5806 star
Simplified finder chart for HR5806.

Visibility of HR5806 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 HR5806 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: 113.1°
Max altitude: 15.4°
Azimuth: 246.9°

Digitized Sky Survey image of HR5806

The image below is a photograph of HR5806 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 HR5806 is -0.022 arcsec per year in Right Ascension and -0.08 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR5806 star
DSS2 image of HR5806. The red arrow shows the motion of HR5806 during the next 10000 years (-3.67 arcmin in Right Ascension and -13.33 arcmin in declination);

Distance of HR5806 from the Sun and relative movement

HR5806 is distant 272.35 light years from the Sun and it is moving far from the Sun at the speed of 7 kilometers per second.

83.54 pc
272.35 ly
7 km/s
-0.022 arcsec/year
-0.08 arcsec/year

Spectral properties of HR5806

HR5806 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 HR5806 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR5806. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR5806