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All Constellations » Ursa Major » 

φ Ursae Majoris (phi Ursae Majoris)

Above the horizon.  Circumpolar today
Alt: 51.14°   Az: 300.65°   Direction: West-North-West

φ Ursae Majoris is a double sub-giant star of spectral class A3 in the constellation of Ursa Major.

φ Ursae Majoris visual magnitude is 4.59. Because of its moderate brightness, φ Ursae Majoris 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 φ Ursae Majoris (phi Ursae Majoris) star
DSS2 image of φ Ursae Majoris. The red arrow shows the motion of φ Ursae Majoris during the next 10000 years (-0.67 arcmin in Right Ascension and 3.50 arcmin in declination);

Celestial Coordinates

Apparent

09h 53m 49s
+53° 56’ 39”
04h 26m 01s
14h 19m 50s

J2000

09h 52m 06s
+54° 03’ 51”

Galactic Coordinates

160.87°
47.7°

Finder Chart

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Finder chart for φ Ursae Majoris (phi Ursae Majoris).

Magnitude, Color, Spectral Class

4.59
Sub-giant

-1.04
A3IV
9766K

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

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

Star System Properties

φ Ursae Majoris 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 φ Ursae Majoris double sysyem:

4.59
4.79
0.2
0.3 arcsec

Distance, Radial Speed, Proper Motion

φ Ursae Majoris is distant 436.41 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

133.87
436.41
-12 km/s
-0.004 arcsec/y
0.021"/y

Alternative Designations

φ Ursae Majoris
(phi Ursae Majoris)
30 Ursae Majoris
SAO27408
SAO27408

Visibility from Your Location

φ Ursae Majoris (phi Ursae Majoris) is circumpolar and transits at 18:11 UTC (altitude: 87.5°)