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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: 6:42  
clear_day Transit: 12:10  
SunsetSet: 17:40
sunny DaytimeWhat's Visible Now?
All Constellations » Centaurus » 


Altitude: -52.3°   Azimuth: 260.7°   Direction: West

HR4906 is a hypergiant star in the constellation of Centaurus.

HR4906 visual magnitude is 5.47. Because of its reltive faintness, HR4906 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 HR4906 is -0.038 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 HR4906 star
DSS2 image of HR4906. The red arrow shows the motion of HR4906 during the next 10000 years (-6.33 arcmin in Right Ascension and -2.00 arcmin in declination);

Key facts about HR4906


HR4906 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -52.3°
Azimuth: 260.7°
Direction: West

Celestial coordinates and finder chart of HR4906

HR4906 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 HR4906 are provided in the following table:

12h 55m 19s
-42° 54’ 56”

The simplified sky map below shows the position of HR4906 in the sky:

Finder chart HR4906 star
Simplified finder chart for HR4906.

Visibility of HR4906 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR4906 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR4906 from the Sun and relative movement

HR4906 is distant 601.48 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

184.50 pc
601.48 ly
-7 km/s
-0.038 arcsec/year
-0.012 arcsec/year

Spectral properties of HR4906

HR4906 belongs to spectral class M0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR4906 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4906. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4906