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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: -39.9°   Azimuth: 120.8°   Direction: East-South-East

HR5103 is a double giant star of spectral class B8 in the constellation of Centaurus.

HR5103 visual magnitude is 6.33. Because of its faintness, HR5103 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 HR5103

Finder chart HR5103 star
Simplified finder chart for HR5103.

HR5103 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 HR5103 are provided in the following table:

13h 34m 28s
-48° 16’ 19”
Image of HR5103 star
DSS2 image of HR5103. The red arrow shows the motion of HR5103 during the next 10000 years (-4.83 arcmin in Right Ascension and -2.00 arcmin in declination);

Key facts about HR5103


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


The red dot in the diagram below shows where HR5103 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR5103. Attribution: Richard Powell / CC BY-SA

HR5103 star system properties

HR5103 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR5103 double sysyem:

0.5 arcsec

Distance of HR5103 from the Sun and relative movement

HR5103 is distant 726.06 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.

222.72 pc
726.06 ly
-4 km/s
-0.029 arcsec/year
-0.012 arcsec/year

Alternative designations of HR5103


Visibility of HR5103 from your location

HR5103 is currently not visible from Greenwich, UK