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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
SunriseRise: 5:43  
clear_day Transit: 12:56  
SunsetSet: 20:10
sunny DaytimeWhat's Visible Now?
All Constellations » Ursa Major » 

31 Ursae Majoris

Altitude: 33.9°   Azimuth: 50.6°   Direction: North-East

31 Ursae Majoris is a variable giant star in the constellation of Ursa Major.

31 Ursae Majoris visual magnitude is 5.27. Because of its reltive faintness, 31 Ursae Majoris should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of 31 Ursae Majoris is -0.003 arcsec per year in Right Ascension and 0.022 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 31 Ursae Majoris star
DSS2 image of 31 Ursae Majoris. The red arrow shows the motion of 31 Ursae Majoris during the next 10000 years (-0.50 arcmin in Right Ascension and 3.67 arcmin in declination);

Key facts about 31 Ursae Majoris

5.27
Giant

31 Ursae Majoris is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 33.9°
Azimuth: 50.6°
Direction: North-East

Celestial coordinates and finder chart of 31 Ursae Majoris

31 Ursae Majoris 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 31 Ursae Majoris are provided in the following table:

09h 55m 42s
+49° 49’ 12”
166.65°
49.63°
Ursa Major

The simplified sky map below shows the position of 31 Ursae Majoris in the sky:

Finder chart 31 Ursae Majoris star
Simplified finder chart for 31 Ursae Majoris.

Visibility of 31 Ursae Majoris from your location

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

31 Ursae Majoris is circumpolar and transits at 19:38 UTC (altitude: 88.3°)

Distance of 31 Ursae Majoris from the Sun and relative movement

31 Ursae Majoris is distant 222.53 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

68.26 pc
222.53 ly
-6 km/s
-0.003 arcsec/year
0.022 arcsec/year

Spectral properties of 31 Ursae Majoris

31 Ursae Majoris belongs to spectral class A3 and has a luminosity class of III corresponding to a giant star.

1.10
A3III
9328K

The red dot in the diagram below shows where 31 Ursae Majoris is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 31 Ursae Majoris. Attribution: Richard Powell / CC BY-SA

Alternative designations of 31 Ursae Majoris

31 Ursae Majoris
SAO27430
SAO27430