HR5821

Below the horizon. Never rises today

Alt: -26.52° Az: 134.65° Direction: South-East

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.

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);

Celestial Coordinates

Apparent

Right Ascension 15h 42m 47s

Declination -47° 48’ 57”

Hour Angle 19h 14m 18s

Sidereal Time 10h 57m 05s

J2000

Right Ascension 15h 40m 58s

Declination -47° 44’ 08”

Galactic Coordinates

Galactic Longitude 330.05°

Galactic Latitude 6.01°

Finder Chart

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Finder chart for HR5821.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.23

Class Giant

Absolute magnitude -0.93

Spectral Type K5III

Color Index (B-V) 1.63

Temperature 3608K

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

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

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:

Main star magnitude 6.23

Secondary star magnitude 12.13

Magnitude difference 5.9

Separation 18.1 arcsec

Distance, Radial Speed, Proper Motion

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.

Distance (parsec) 271.00

Distance (light year) 883.47

Radial Speed -54 km/s

Proper Motion RA -0.027 arcsec/y

Proper Motion Dec -0.025"/y

Alternative Designations

Henry Draper Catalogue HD139599

SAO Catalogue SAO226059

Hipparcos Catalogue HIP76809

Durchmusterung Catalogue CD-4710210

Visibility from Your Location

HR5821 is currently not visible from Greenwich, UK

Set Location

Other stars in Lupus