Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]


HR8191 is a giant star in the constellation of Equuleus.

HR8191 visual magnitude is 6.35. Because of its reltive faintness, HR8191 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 HR8191:

HR8191 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR8191

HR8191 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 HR8191 are provided in the following table:

21h 24m 24s
+10° 10’ 27”

The simplified sky map below shows the position of HR8191 in the sky:

Finder chart HR8191 star
Simplified finder chart for HR8191.

Visibility of HR8191 from your location

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

Today's HR8191 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 79.8°
Max altitude: 48.7°
Azimuth: 280.2°
HR8191 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR8191

The image below is a photograph of HR8191 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 HR8191 is 0.072 arcsec per year in Right Ascension and 0.021 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8191 star
DSS2 image of HR8191. The red arrow shows the motion of HR8191 during the next 10000 years (12.00 arcmin in Right Ascension and 3.50 arcmin in declination);

Distance of HR8191 from the Sun and relative movement

HR8191 is distant 344.24 light years from the Sun and it is moving towards the Sun at the speed of 33 kilometers per second.

105.60 pc
344.24 ly
-33 km/s
0.072 arcsec/year
0.021 arcsec/year

Spectral properties of HR8191

HR8191 belongs to spectral class F5 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR8191 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR8191. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8191