Your guide to the Solar System and the night sky
By donating now you help keep this site alive and free from ads. Please consider supporting this project.
🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 5:59  ☀️ Transit: 12:05  🌅 Sunset: 18:13


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 skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR4285:

HR4285 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 41°.

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 [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR4285 is circumpolar and transits at 22:59 UTC (altitude: 81.4°)

Digitized Sky Survey image of HR4285

The image below is a photograph of HR4285 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 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);

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