Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 6:52  
clear_day Transit: 12:49  
SunsetSet: 18:46 south
sunny DaytimeWhat's Visible Now
All Constellations » Ursa Major » 


Altitude: 48.6°   Azimuth: 326.9°   Direction: North-North-West

HR4047 is a main-sequence star in the constellation of Ursa Major.

HR4047 visual magnitude is 5.96. Because of its reltive faintness, HR4047 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 HR4047:


HR4047 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 48.6°
Azimuth: 326.9°
Direction: North-North-West

Celestial coordinates and finder chart of HR4047

HR4047 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4047 are provided in the following table:

10h 21m 03s
+68° 44’ 51”
Ursa Major

The simplified sky map below shows the position of HR4047 in the sky:

Finder chart HR4047 star
Simplified finder chart for HR4047.

Visibility of HR4047 from your location

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

HR4047 is circumpolar and transits at 09:57 UTC (altitude: 72.7°)

Digitized Sky Survey image of HR4047

The image below is a photograph of HR4047 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 HR4047 is -0.053 arcsec per year in Right Ascension and -0.038 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4047 star
DSS2 image of HR4047. The red arrow shows the motion of HR4047 during the next 10000 years (-8.83 arcmin in Right Ascension and -6.33 arcmin in declination);

Distance of HR4047 from the Sun and relative movement

HR4047 is distant 410.06 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

125.79 pc
410.06 ly
4 km/s
-0.053 arcsec/year
-0.038 arcsec/year

Spectral properties of HR4047

HR4047 belongs to spectral class A7 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR4047 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4047. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4047