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: 7:52  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
sleep NighttimeWhat's Visible Now?
All Constellations » Canes Venatici » 


Altitude: 22.8°   Azimuth: 41.5°   Direction: North-East

HR4909 is a variable giant star in the constellation of Canes Venatici.

HR4909 visual magnitude is 5.84. Because of its reltive faintness, HR4909 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 HR4909:


HR4909 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 22.8°
Azimuth: 41.5°
Direction: North-East

Celestial coordinates and finder chart of HR4909

HR4909 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 HR4909 are provided in the following table:

12h 54m 56s
+47° 11’ 48”
Canes Venatici

The simplified sky map below shows the position of HR4909 in the sky:

Finder chart HR4909 star
Simplified finder chart for HR4909.

Visibility of HR4909 from your location

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

HR4909 is circumpolar and transits at 07:39 UTC (altitude: 85.7°)

Digitized Sky Survey image of HR4909

The image below is a photograph of HR4909 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 HR4909 is -0.016 arcsec per year in Right Ascension and -0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4909 star
DSS2 image of HR4909. The red arrow shows the motion of HR4909 during the next 10000 years (-2.67 arcmin in Right Ascension and -1.00 arcmin in declination);

Distance of HR4909 from the Sun and relative movement

HR4909 is distant 704.10 light years from the Sun and it is moving towards the Sun at the speed of 17 kilometers per second.

215.98 pc
704.10 ly
-17 km/s
-0.016 arcsec/year
-0.006 arcsec/year

Spectral properties of HR4909

HR4909 belongs to spectral class M5 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR4909 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR4909. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4909