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public  Greenwich, UK Greenwich, UK  ⓘ
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Transit: 12:53 
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All Constellations » Ursa Minor » 

Yildun - δ Ursae Minoris (delta Ursae Minoris)

Above the horizon.  Circumpolar today
Alt: 49.42°   Az: 355.69°   Direction: North

Yildun, also designated as δ Ursae Minoris (delta Ursae Minoris), is a main-sequence star of spectral class A1 in the constellation of Ursa Minor.

Yildun visual magnitude is 4.36. Because of its moderate brightness, Yildun 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 Yildun - δ Ursae Minoris (delta Ursae Minoris) star
DSS2 image of Yildun. The red arrow shows the motion of Yildun during the next 10000 years (1.50 arcmin in Right Ascension and 9.33 arcmin in declination);

Celestial Coordinates

Apparent

17h 24m 21s
+86° 34’ 02”
08h 21m 02s
01h 45m 24s

J2000

17h 32m 12s
+86° 35’ 11”

Galactic Coordinates

119.29°
28.24°

Finder Chart

Finder chart Yildun - δ Ursae Minoris (delta Ursae Minoris) star
Simplified finder chart for Yildun - δ Ursae Minoris (delta Ursae Minoris).

Magnitude, Color, Spectral Class

4.36
Main-sequence

0.62
A1V
9882K

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

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

Distance, Radial Speed, Proper Motion

Yildun is distant 182.63 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

56.02
182.63
-8 km/s
0.009 arcsec/y
0.056"/y

Alternative Designations

Yildun
δ Ursae Minoris
(delta Ursae Minoris)
23 Ursae Minoris
SAO2937
SAO2937

Visibility from Your Location

Yildun - δ Ursae Minoris (delta Ursae Minoris) is circumpolar and transits at 17:23 UTC (altitude: 54.9°)