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🌎  Greenwich, United Kingdom [change]


HR4831 is a hypergiant star in the constellation of Centaurus.

HR4831 visual magnitude is 4.66. Because of its moderate brightness, HR4831 should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about HR4831:

HR4831 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR4831

HR4831 is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4831 are provided in the following table:

12h 42m 35s
-48° 48’ 47”

The simplified sky map below shows the position of HR4831 in the sky:

Finder chart HR4831 star
Simplified finder chart for HR4831.

Visibility of HR4831 from your location

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

HR4831 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR4831

The image below is a photograph of HR4831 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR4831 is -0.127 arcsec per year in Right Ascension and -0.032 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR4831 star
DSS2 image of HR4831. The red arrow shows the motion of HR4831 during the next 1000 years (-2.12 arcmin in Right Ascension and -0.53 arcmin in declination);

Distance of HR4831 from the Sun and relative movement

HR4831 is distant 188.33 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

57.77 pc
188.33 ly
-12 km/s
-0.127 arcsec/year
-0.032 arcsec/year

Spectral properties of HR4831

HR4831 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR4831 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4831. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4831