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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 5:12 
Transit: 12:56 
Sunset: 20:41
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All Constellations » Ursa Major » 

Alcor - 80 Ursae Majoris

Above the horizon.  Circumpolar today
Alt: 75.62°   Az: 292.76°   Direction: West-North-West

Alcor, also designated as 80 Ursae Majoris , is a variable main-sequence star of spectral class A5 in the constellation of Ursa Major.

Alcor visual magnitude is 4.01. Because of its moderate brightness, Alcor is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Image of Alcor - 80 Ursae Majoris star
DSS2 image of Alcor. The red arrow shows the motion of Alcor during the next 1000 years (1.97 arcmin in Right Ascension and -0.27 arcmin in declination);

Celestial Coordinates

Apparent

13h 26m 13s
+54° 51’ 23”
01h 33m 46s
15h 00m 00s

J2000

13h 25m 13s
+54° 59’ 17”

Galactic Coordinates

112.77°
61.47°

Finder Chart

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Finder chart for Alcor - 80 Ursae Majoris.

Magnitude, Color, Spectral Class

4.01
Main-sequence

2.03
A5V
8486K

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

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

Distance, Radial Speed, Proper Motion

Alcor is distant 81.11 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

24.88
81.11
-9 km/s
0.118 arcsec/y
-0.016"/y

Alternative Designations

Alcor
80 Ursae Majoris
SAO28751
SAO28751

Visibility from Your Location

Alcor - 80 Ursae Majoris is circumpolar and transits at 21:58 UTC (altitude: 86.6°)