Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:46  
clear_day Transit: 12:56  
SunsetSet: 21:07 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Ursa Minor » 


HR4950 is a multiple hypergiant star in the constellation of Ursa Minor.

HR4950 visual magnitude is 6.31. Because of its reltive faintness, HR4950 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 HR4950:

HR4950 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 55°.

Celestial coordinates and finder chart of HR4950

HR4950 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4950 are provided in the following table:

13h 04m 49s
+73° 01’ 31”
Ursa Minor

The simplified sky map below shows the position of HR4950 in the sky:

Finder chart HR4950 star
Simplified finder chart for HR4950.

Visibility of HR4950 from your location

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

HR4950 is circumpolar and transits at 20:12 UTC (altitude: 68.5°)

Digitized Sky Survey image of HR4950

The image below is a photograph of HR4950 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 HR4950 is -0.019 arcsec per year in Right Ascension and 0.02 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4950 star
DSS2 image of HR4950. The red arrow shows the motion of HR4950 during the next 10000 years (-3.17 arcmin in Right Ascension and 3.33 arcmin in declination);

Distance of HR4950 from the Sun and relative movement

HR4950 is distant 396.11 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

121.51 pc
396.11 ly
-16 km/s
-0.019 arcsec/year
0.02 arcsec/year

Spectral properties of HR4950

HR4950 belongs to spectral class F0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR4950 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR4950. Attribution: Richard Powell / CC BY-SA

HR4950 star system properties

HR4950 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR4950 double sysyem:

1.3 arcsec

Alternative designations of HR4950