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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:04  
clear_day Transit: 12:06  
SunsetSet: 18:09
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All Constellations » Ursa Major » 

HR3929

Altitude: 44.4°   Azimuth: 291.7°   Direction: West-North-West

HR3929 is a hypergiant star in the constellation of Ursa Major.

HR3929 visual magnitude is 6.3. Because of its reltive faintness, HR3929 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR3929 is 0.011 arcsec per year in Right Ascension and -0.03 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3929 star
DSS2 image of HR3929. The red arrow shows the motion of HR3929 during the next 10000 years (1.83 arcmin in Right Ascension and -5.00 arcmin in declination);

Key facts about HR3929

6.3
Hypergiant

HR3929 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 44.4°
Azimuth: 291.7°
Direction: West-North-West

Celestial coordinates and finder chart of HR3929

HR3929 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR3929 are provided in the following table:

09h 57m 56s
+45° 24’ 51”
173.16°
51.16°
Ursa Major

The simplified sky map below shows the position of HR3929 in the sky:

Finder chart HR3929 star
Simplified finder chart for HR3929.

Visibility of HR3929 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR3929 is circumpolar and transits at 22:06 UTC (altitude: 83.9°)

Distance of HR3929 from the Sun and relative movement

HR3929 is distant 417.95 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

128.21 pc
417.95 ly
5 km/s
0.011 arcsec/year
-0.03 arcsec/year

Spectral properties of HR3929

HR3929 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.

0.76
K0III
4493K

The red dot in the diagram below shows where HR3929 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3929. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3929

SAO43117
SAO43117