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
Help keep this site free and ads-free! Donate Now!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 5:43  
clear_day Transit: 12:56  
SunsetSet: 20:10
sunny DaytimeWhat's Visible Now?
All Constellations » Vela » 


Altitude: -89.6°   Azimuth: 321.1°   Direction: North-West

HR3924 is a variable giant star in the constellation of Vela.

HR3924 visual magnitude is 5.93. Because of its reltive faintness, HR3924 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 HR3924 is -0.005 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 HR3924 star
DSS2 image of HR3924. The red arrow shows the motion of HR3924 during the next 10000 years (-0.83 arcmin in Right Ascension and -1.67 arcmin in declination);

Key facts about HR3924


HR3924 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -89.6°
Azimuth: 321.1°
Direction: North-West

Celestial coordinates and finder chart of HR3924

HR3924 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR3924 are provided in the following table:

09h 53m 50s
-51° 08’ 48”

The simplified sky map below shows the position of HR3924 in the sky:

Finder chart HR3924 star
Simplified finder chart for HR3924.

Visibility of HR3924 from your location

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

HR3924 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR3924 from the Sun and relative movement

HR3924 is distant 1,706.81 light years from the Sun and it is moving far from the Sun at the speed of 10 kilometers per second.

523.56 pc
1,706.81 ly
10 km/s
-0.005 arcsec/year
-0.01 arcsec/year

Spectral properties of HR3924

HR3924 belongs to spectral class B2 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR3924 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR3924. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3924