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public LocationGreenwich, UK
Sunrise: 4:42 
Transit: 13:00 
Sunset: 21:18
sunny   (Daytime)   What's Visible Now?


Below the horizon.  Never rises today
Altitude: -51.3°   Azimuth: 250.6°   Direction: West-South-West

HR5821 is a double giant star of spectral class K5 in the constellation of Lupus.

HR5821 visual magnitude is 6.23. Because of its faintness, HR5821 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Celestial coordinates and finder chart of HR5821

Finder chart HR5821 star
Simplified finder chart for HR5821.

HR5821 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 HR5821 are provided in the following table:

15h 40m 58s
-47° 44’ 08”
Image of HR5821 star
DSS2 image of HR5821. The red arrow shows the motion of HR5821 during the next 10000 years (-4.50 arcmin in Right Ascension and -4.17 arcmin in declination);

Key facts about HR5821


and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR5821 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR5821. Attribution: Richard Powell / CC BY-SA

HR5821 star system properties

HR5821 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 HR5821 double sysyem:

18.1 arcsec

Distance of HR5821 from the Sun and relative movement

HR5821 is distant 883.47 light years from the Sun and it is moving towards the Sun at the speed of 54 kilometers per second.

271.00 pc
883.47 ly
-54 km/s
-0.027 arcsec/year
-0.025 arcsec/year

Alternative designations of HR5821


Visibility of HR5821 from your location

HR5821 is currently not visible from Greenwich, UK