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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
SunriseRise: 6:46  
clear_day Transit: 12:11  
SunsetSet: 17:36
sleep NighttimeWhat's Visible Now?
All Constellations » Centaurus » 


Altitude: 5.2°   Azimuth: 182.9°   Direction: South

HR5104 is a variable giant star in the constellation of Centaurus.

HR5104 visual magnitude is 6.44. Because of its reltive faintness, HR5104 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR5104 is -0.049 arcsec per year in Right Ascension and -0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR5104 star
DSS2 image of HR5104. The red arrow shows the motion of HR5104 during the next 10000 years (-8.17 arcmin in Right Ascension and -2.00 arcmin in declination);

Key facts about HR5104


HR5104 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 5.2°
Azimuth: 182.9°
Direction: South

Celestial coordinates and finder chart of HR5104

HR5104 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 HR5104 are provided in the following table:

13h 34m 43s
-33° 18’ 38”

The simplified sky map below shows the position of HR5104 in the sky:

Finder chart HR5104 star
Simplified finder chart for HR5104.

Visibility of HR5104 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 HR5104 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: 123.3°
Max altitude: 5.2°
Azimuth: 236.7°

Distance of HR5104 from the Sun and relative movement

HR5104 is distant 903.05 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

277.01 pc
903.05 ly
-9 km/s
-0.049 arcsec/year
-0.012 arcsec/year

Spectral properties of HR5104

HR5104 belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR5104 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR5104. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR5104