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public LocationGreenwich, United Kingdom
TimezoneEurope/London
Sunrise: 5:22 
Transit: 12:55 
Sunset: 20:28
wb_twilight   (Astronomical Twilight)   What's Visible Now?

HR4831

Altitude: -23.7°   Azimuth: 219.8°   Direction: South-West

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 skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.

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);

Key facts about HR4831

4.66
Hypergiant

HR4831 is below the horizon from Greenwich, United Kingdom.

Altitude: -23.7°
Azimuth: 219.8°
Direction: South-West

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 hemisphere. 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”
301.43°
14.03°
Centaurus

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
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR4831 is currently not visible from Greenwich, United Kingdom

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.

0.85
K0III
4537K

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

SAO223614
SAO223614