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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: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sleep NighttimeWhat's Visible Now?
All Constellations » Ursa Major » 


Altitude: 26.1°   Azimuth: 16.1°   Direction: North-North-East

HR4421 is a main-sequence star in the constellation of Ursa Major.

HR4421 visual magnitude is 5.83. Because of its reltive faintness, HR4421 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 HR4421:


HR4421 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 26.1°
Azimuth: 16.1°
Direction: North-North-East

Celestial coordinates and finder chart of HR4421

HR4421 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 HR4421 are provided in the following table:

11h 29m 04s
+61° 46’ 41”
Ursa Major

The simplified sky map below shows the position of HR4421 in the sky:

Finder chart HR4421 star
Simplified finder chart for HR4421.

Visibility of HR4421 from your location

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

HR4421 is circumpolar and transits at 06:53 UTC (altitude: 79.7°)

Digitized Sky Survey image of HR4421

The image below is a photograph of HR4421 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 HR4421 is -0.112 arcsec per year in Right Ascension and 0.237 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR4421 star
DSS2 image of HR4421. The red arrow shows the motion of HR4421 during the next 1000 years (-1.87 arcmin in Right Ascension and 3.95 arcmin in declination);

Distance of HR4421 from the Sun and relative movement

HR4421 is distant 107.24 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

32.89 pc
107.24 ly
-8 km/s
-0.112 arcsec/year
0.237 arcsec/year

Spectral properties of HR4421

HR4421 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 HR4421 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4421. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4421