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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
north SunriseRise: 7:44  
clear_day Transit: 11:48  
SunsetSet: 15:51 south
sunny DaytimeWhat's Visible Now?
All Constellations » Ursa Major » 


Altitude: 19.7°   Azimuth: 338.2°   Direction: North-North-West

HR3954 is a main-sequence star in the constellation of Ursa Major.

HR3954 visual magnitude is 5.74. Because of its reltive faintness, HR3954 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR3954:


HR3954 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 19.7°
Azimuth: 338.2°
Direction: North-North-West

Celestial coordinates and finder chart of HR3954

HR3954 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 HR3954 are provided in the following table:

10h 04m 36s
+53° 53’ 30”
Ursa Major

The simplified sky map below shows the position of HR3954 in the sky:

Finder chart HR3954 star
Simplified finder chart for HR3954.

Visibility of HR3954 from your location

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

HR3954 is circumpolar and transits at 05:17 UTC (altitude: 87.6°)

Digitized Sky Survey image of HR3954

The image below is a photograph of HR3954 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR3954 is -0.022 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3954 star
DSS2 image of HR3954. The red arrow shows the motion of HR3954 during the next 10000 years (-3.67 arcmin in Right Ascension and -0.33 arcmin in declination);

Distance of HR3954 from the Sun and relative movement

HR3954 is distant 154.14 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

47.28 pc
154.14 ly
-16 km/s
-0.022 arcsec/year
-0.002 arcsec/year

Spectral properties of HR3954

HR3954 belongs to spectral class F5 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR3954 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3954. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3954