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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: 7:38  
clear_day Transit: 11:46  
SunsetSet: 15:54 south
sunny DaytimeWhat's Visible Now?
All Constellations » Canes Venatici » 


Altitude: 84.5°   Azimuth: 198.1°   Direction: South-South-West

HR4919 is a hypergiant star in the constellation of Canes Venatici.

HR4919 visual magnitude is 6.12. Because of its reltive faintness, HR4919 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 HR4919:


HR4919 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 84.5°
Azimuth: 198.1°
Direction: South-South-West

Celestial coordinates and finder chart of HR4919

HR4919 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 HR4919 are provided in the following table:

12h 57m 07s
+46° 10’ 36”
Canes Venatici

The simplified sky map below shows the position of HR4919 in the sky:

Finder chart HR4919 star
Simplified finder chart for HR4919.

Visibility of HR4919 from your location

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

HR4919 is circumpolar and transits at 08:25 UTC (altitude: 84.7°)

Digitized Sky Survey image of HR4919

The image below is a photograph of HR4919 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 HR4919 is -0.022 arcsec per year in Right Ascension and -0.047 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4919 star
DSS2 image of HR4919. The red arrow shows the motion of HR4919 during the next 10000 years (-3.67 arcmin in Right Ascension and -7.83 arcmin in declination);

Distance of HR4919 from the Sun and relative movement

HR4919 is distant 343.88 light years from the Sun and it is moving far from the Sun at the speed of 7 kilometers per second.

105.49 pc
343.88 ly
7 km/s
-0.022 arcsec/year
-0.047 arcsec/year

Spectral properties of HR4919

HR4919 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 HR4919 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4919. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4919