We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
Help keep this site free and ads-free: donate now!
public LocationGreenwich, UK
Sunrise: 4:43 
Transit: 13:01 
Sunset: 21:18
wb_twilight   (Astronomical Twilight)   What's Visible Now?
All Constellations » Ursa Major » 


Above the horizon.  Circumpolar today
Altitude: 23.7°   Azimuth: 320.1°   Direction: North-West

HR4098 is a double main-sequence star of spectral class F9 in the constellation of Ursa Major.

HR4098 visual magnitude is 6.44. Because of its faintness, HR4098 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Celestial coordinates and finder chart of HR4098

Finder chart HR4098 star
Simplified finder chart for HR4098.

HR4098 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 HR4098 are provided in the following table:

10h 28m 03s
+48° 47’ 04”
Ursa Major
Image of HR4098 star
DSS2 image of HR4098. The red arrow shows the motion of HR4098 during the next 1000 years (1.32 arcmin in Right Ascension and -14.73 arcmin in declination);

Key facts about HR4098


and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR4098 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4098. Attribution: Richard Powell / CC BY-SA

HR4098 star system properties

HR4098 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR4098 double sysyem:

4.7 arcsec

Distance of HR4098 from the Sun and relative movement

HR4098 is distant 76.80 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

23.56 pc
76.80 ly
-7 km/s
0.079 arcsec/year
-0.884 arcsec/year

Alternative designations of HR4098

Gl 392 A

Visibility of HR4098 from your location

HR4098 is circumpolar and transits at 16:10 UTC (altitude: 87.3°)