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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: 6:40  
clear_day Transit: 12:10  
SunsetSet: 17:41
sunny DaytimeWhat's Visible Now?
All Constellations » Ursa Major » 


Altitude: 26.9°   Azimuth: 306.1°   Direction: North-West

HR4285 is a double main-sequence star in the constellation of Ursa Major.

HR4285 visual magnitude is 6.02. Because of its reltive faintness, HR4285 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 HR4285 is -0.109 arcsec per year in Right Ascension and -0.132 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR4285 star
DSS2 image of HR4285. The red arrow shows the motion of HR4285 during the next 1000 years (-1.82 arcmin in Right Ascension and -2.20 arcmin in declination);

Key facts about HR4285


HR4285 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 26.9°
Azimuth: 306.1°
Direction: North-West

Celestial coordinates and finder chart of HR4285

HR4285 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 HR4285 are provided in the following table:

11h 00m 20s
+42° 54’ 41”
Ursa Major

The simplified sky map below shows the position of HR4285 in the sky:

Finder chart HR4285 star
Simplified finder chart for HR4285.

Visibility of HR4285 from your location

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

HR4285 is circumpolar and transits at 00:15 UTC (altitude: 81.4°)

Distance of HR4285 from the Sun and relative movement

HR4285 is distant 148.32 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

45.50 pc
148.32 ly
-6 km/s
-0.109 arcsec/year
-0.132 arcsec/year

Spectral properties of HR4285

HR4285 belongs to spectral class F9 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR4285 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4285. Attribution: Richard Powell / CC BY-SA

HR4285 star system properties

HR4285 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR4285 double sysyem:

37.1 arcsec

Alternative designations of HR4285