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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 5:01 
Transit: 12:56 
Sunset: 20:52
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All Constellations » Ursa Minor » 

η Ursae Minoris (eta Ursae Minoris)

Above the horizon.  Circumpolar today
Alt: 38.03°   Az: 353.08°   Direction: North

η Ursae Minoris is a double main-sequence star of spectral class F5 in the constellation of Ursa Minor.

η Ursae Minoris visual magnitude is 4.95. Because of its moderate brightness, η Ursae Minoris 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 η Ursae Minoris (eta Ursae Minoris) star
DSS2 image of η Ursae Minoris. The red arrow shows the motion of η Ursae Minoris during the next 1000 years (-1.42 arcmin in Right Ascension and 4.20 arcmin in declination);

Celestial Coordinates

Apparent

16h 16m 48s
+75° 41’ 38”
10h 29m 39s
02h 46m 27s

J2000

16h 17m 30s
+75° 45’ 19”

Galactic Coordinates

109.27°
35.33°

Finder Chart

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Finder chart for η Ursae Minoris (eta Ursae Minoris).

Magnitude, Color, Spectral Class

4.95
Main-sequence

2.58
F5V
7044K

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

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

Star System Properties

η Ursae Minoris 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 η Ursae Minoris double sysyem:

4.95
15.75
10.8
227 arcsec

Distance, Radial Speed, Proper Motion

η Ursae Minoris is distant 97.26 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

29.83
97.26
-10 km/s
-0.085 arcsec/y
0.252"/y

Alternative Designations

η Ursae Minoris
(eta Ursae Minoris)
21 Ursae Minoris
SAO8470
SAO8470
NN 3950 A

Visibility from Your Location

η Ursae Minoris (eta Ursae Minoris) is circumpolar and transits at 00:21 UTC (altitude: 65.8°)