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All Constellations » Ursa Major » 

Megrez - δ Ursae Majoris (delta Ursae Majoris)

Above the horizon.  Circumpolar today
Alt: 21.16°   Az: 17.07°   Direction: North-North-East

Megrez, also designated as δ Ursae Majoris (delta Ursae Majoris), is a variable and multiple main-sequence star of spectral class A3 in the constellation of Ursa Major.

Megrez visual magnitude is 3.31. Because of its moderate brightness, Megrez 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 Megrez - δ Ursae Majoris (delta Ursae Majoris) star
DSS2 image of Megrez. The red arrow shows the motion of Megrez during the next 1000 years (1.73 arcmin in Right Ascension and 0.15 arcmin in declination);

Celestial Coordinates

Apparent

12h 16m 38s
+56° 53’ 41”
14h 00m 19s
02h 16m 57s

J2000

12h 15m 25s
+57° 01’ 56”

Galactic Coordinates

132.57°
59.42°

Finder Chart

Finder chart Megrez - δ Ursae Majoris (delta Ursae Majoris) star
Simplified finder chart for Megrez - δ Ursae Majoris (delta Ursae Majoris).

Magnitude, Color, Spectral Class

3.31
Main-sequence

1.32
A3V
9226K

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

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

Star System Properties

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

3.31
9.91
6.6
189.6 arcsec

Distance, Radial Speed, Proper Motion

Megrez is distant 81.40 light years from the Sun and it is moving towards the Sun at the speed of 13 kilometers per second.

24.97
81.40
-13 km/s
0.104 arcsec/y
0.009"/y

Alternative Designations

Megrez
δ Ursae Majoris
(delta Ursae Majoris)
69 Ursae Majoris
SAO28315
SAO28315

Visibility from Your Location

Megrez - δ Ursae Majoris (delta Ursae Majoris) is circumpolar and transits at 10:58 UTC (altitude: 84.6°)