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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: 6:52  
clear_day Transit: 12:11  
SunsetSet: 17:31
sunny DaytimeWhat's Visible Now?
All Constellations » Draco » 


Altitude: 26.2°   Azimuth: 8.8°   Direction: North

HR4727 is a double giant star in the constellation of Draco.

HR4727 visual magnitude is 6.32. Because of its reltive faintness, HR4727 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 HR4727 is -0.015 arcsec per year in Right Ascension and 0.002 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4727 star
DSS2 image of HR4727. The red arrow shows the motion of HR4727 during the next 10000 years (-2.50 arcmin in Right Ascension and 0.33 arcmin in declination);

Key facts about HR4727


HR4727 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 26.2°
Azimuth: 8.8°
Direction: North

Celestial coordinates and finder chart of HR4727

HR4727 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 HR4727 are provided in the following table:

12h 25m 06s
+63° 48’ 10”

The simplified sky map below shows the position of HR4727 in the sky:

Finder chart HR4727 star
Simplified finder chart for HR4727.

Visibility of HR4727 from your location

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

HR4727 is circumpolar and transits at 02:03 UTC (altitude: 77.7°)

Distance of HR4727 from the Sun and relative movement

HR4727 is distant 515.82 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.

158.23 pc
515.82 ly
-4 km/s
-0.015 arcsec/year
0.002 arcsec/year

Spectral properties of HR4727

HR4727 belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR4727 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4727. Attribution: Richard Powell / CC BY-SA

HR4727 star system properties

HR4727 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR4727 double sysyem:

52.3 arcsec

Alternative designations of HR4727