We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sleep NighttimeWhat's Visible Now?
All Constellations » Draco » 


Altitude: 57.6°   Azimuth: 22.9°   Direction: North-North-East

HR4927 is a hypergiant star in the constellation of Draco.

HR4927 visual magnitude is 6.01. Because of its reltive faintness, HR4927 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 HR4927:


HR4927 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 57.6°
Azimuth: 22.9°
Direction: North-North-East

Celestial coordinates and finder chart of HR4927

HR4927 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 HR4927 are provided in the following table:

12h 58m 47s
+75° 28’ 20”

The simplified sky map below shows the position of HR4927 in the sky:

Finder chart HR4927 star
Simplified finder chart for HR4927.

Visibility of HR4927 from your location

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

HR4927 is circumpolar and transits at 08:22 UTC (altitude: 66.0°)

Digitized Sky Survey image of HR4927

The image below is a photograph of HR4927 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 HR4927 is 0.008 arcsec per year in Right Ascension and 0.01 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4927 star
DSS2 image of HR4927. The red arrow shows the motion of HR4927 during the next 10000 years (1.33 arcmin in Right Ascension and 1.67 arcmin in declination);

Distance of HR4927 from the Sun and relative movement

HR4927 is distant 477.31 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

146.41 pc
477.31 ly
-15 km/s
0.008 arcsec/year
0.01 arcsec/year

Spectral properties of HR4927

HR4927 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR4927 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4927. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4927