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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:48  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sunny DaytimeWhat's Visible Now?
All Constellations » Ursa Major » 


Altitude: 60.1°   Azimuth: 278.1°   Direction: West

HR4191 is a multiple giant star in the constellation of Ursa Major.

HR4191 visual magnitude is 5.18. Because of its reltive faintness, HR4191 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 HR4191:


HR4191 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 60.1°
Azimuth: 278.1°
Direction: West

Celestial coordinates and finder chart of HR4191

HR4191 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4191 are provided in the following table:

10h 43m 32s
+46° 12’ 14”
Ursa Major

The simplified sky map below shows the position of HR4191 in the sky:

Finder chart HR4191 star
Simplified finder chart for HR4191.

Visibility of HR4191 from your location

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

HR4191 is circumpolar and transits at 05:44 UTC (altitude: 84.7°)

Digitized Sky Survey image of HR4191

The image below is a photograph of HR4191 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 HR4191 is -0.269 arcsec per year in Right Ascension and -0.066 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR4191 star
DSS2 image of HR4191. The red arrow shows the motion of HR4191 during the next 1000 years (-4.48 arcmin in Right Ascension and -1.10 arcmin in declination);

Distance of HR4191 from the Sun and relative movement

HR4191 is distant 116.22 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

35.65 pc
116.22 ly
4 km/s
-0.269 arcsec/year
-0.066 arcsec/year

Spectral properties of HR4191

HR4191 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 HR4191 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4191. Attribution: Richard Powell / CC BY-SA

HR4191 star system properties

HR4191 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR4191 double sysyem:

286.9 arcsec

Alternative designations of HR4191