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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: 7:54  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
sleep NighttimeWhat's Visible Now?
All Constellations » Ursa Minor » 


Altitude: 50.3°   Azimuth: 3.1°   Direction: North

HR4686 is a main-sequence star in the constellation of Ursa Minor.

HR4686 visual magnitude is 6.28. Because of its reltive faintness, HR4686 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 HR4686:


HR4686 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 50.3°
Azimuth: 3.1°
Direction: North

Celestial coordinates and finder chart of HR4686

HR4686 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 HR4686 are provided in the following table:

12h 15m 20s
+87° 42’ 00”
Ursa Minor

The simplified sky map below shows the position of HR4686 in the sky:

Finder chart HR4686 star
Simplified finder chart for HR4686.

Visibility of HR4686 from your location

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

HR4686 is circumpolar and transits at 06:56 UTC (altitude: 53.8°)

Digitized Sky Survey image of HR4686

The image below is a photograph of HR4686 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 HR4686 is -0.028 arcsec per year in Right Ascension and 0.054 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4686 star
DSS2 image of HR4686. The red arrow shows the motion of HR4686 during the next 10000 years (-4.67 arcmin in Right Ascension and 9.00 arcmin in declination);

Distance of HR4686 from the Sun and relative movement

HR4686 is distant 151.77 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.

46.55 pc
151.77 ly
-4 km/s
-0.028 arcsec/year
0.054 arcsec/year

Spectral properties of HR4686

HR4686 belongs to spectral class F2 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR4686 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR4686. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4686