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🌎  Greenwich, United Kingdom [change]


HR5171 is a variable and double hypergiant star in the constellation of Centaurus.

HR5171 visual magnitude is 6.51. Because of its reltive faintness, HR5171 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR5171:

HR5171 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR5171

HR5171 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 HR5171 are provided in the following table:

13h 47m 10s
-62° 35’ 24”

The simplified sky map below shows the position of HR5171 in the sky:

Finder chart HR5171 star
Simplified finder chart for HR5171.

Visibility of HR5171 from your location

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

HR5171 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR5171

The image below is a photograph of HR5171 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 HR5171 is -0.023 arcsec per year in Right Ascension and -0.011 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR5171 star
DSS2 image of HR5171. The red arrow shows the motion of HR5171 during the next 10000 years (-3.83 arcmin in Right Ascension and -1.83 arcmin in declination);

Distance of HR5171 from the Sun and relative movement

HR5171 is distant 11,642.86 light years from the Sun and it is moving towards the Sun at the speed of 36 kilometers per second.

3,571.43 pc
11,642.86 ly
-36 km/s
-0.023 arcsec/year
-0.011 arcsec/year

Spectral properties of HR5171

HR5171 belongs to spectral class K0 and has a luminosity class of I corresponding to a hypergiant star.


The red dot in the diagram below shows where HR5171 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR5171. Attribution: Richard Powell / CC BY-SA

HR5171 star system properties

HR5171 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR5171 double sysyem:

9.4 arcsec

Alternative designations of HR5171