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🌎  Greenwich, United Kingdom [change]


HR8172 is a giant star in the constellation of Capricornus.

HR8172 visual magnitude is 5.6. Because of its reltive faintness, HR8172 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 HR8172:

HR8172 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR8172

HR8172 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR8172 are provided in the following table:

21h 23m 00s
-22° 40’ 08”

The simplified sky map below shows the position of HR8172 in the sky:

Finder chart HR8172 star
Simplified finder chart for HR8172.

Visibility of HR8172 from your location

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

Today's HR8172 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 112.7°
Max altitude: 15.9°
Azimuth: 247.3°
HR8172 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR8172

The image below is a photograph of HR8172 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 HR8172 is 0.037 arcsec per year in Right Ascension and 0.01 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8172 star
DSS2 image of HR8172. The red arrow shows the motion of HR8172 during the next 10000 years (6.17 arcmin in Right Ascension and 1.67 arcmin in declination);

Distance of HR8172 from the Sun and relative movement

HR8172 is distant 666.67 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

204.50 pc
666.67 ly
-7 km/s
0.037 arcsec/year
0.01 arcsec/year

Spectral properties of HR8172

HR8172 belongs to spectral class M1 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR8172 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8172. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8172