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: -76.6°   Azimuth: 75.9°   Direction: East-North-East

HR3912 is a variable supergiant star in the constellation of Vela.

HR3912 visual magnitude is 4.58. Because of its moderate brightness, HR3912 should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.

The proper motion of HR3912 is -0.008 arcsec per year in Right Ascension and -0.001 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR3912 star
DSS2 image of HR3912. The red arrow shows the motion of HR3912 during the next 100000 years (-13.33 arcmin in Right Ascension and -1.67 arcmin in declination);

Key facts about HR3912


HR3912 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -76.6°
Azimuth: 75.9°
Direction: East-North-East

Celestial coordinates and finder chart of HR3912

HR3912 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 HR3912 are provided in the following table:

09h 51m 40s
-46° 32’ 52”

The simplified sky map below shows the position of HR3912 in the sky:

Finder chart HR3912 star
Simplified finder chart for HR3912.

Visibility of HR3912 from your location

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

HR3912 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR3912 from the Sun and relative movement

HR3912 is distant 1,083.06 light years from the Sun and it is moving far from the Sun at the speed of 11 kilometers per second.

332.23 pc
1,083.06 ly
11 km/s
-0.008 arcsec/year
-0.001 arcsec/year

Spectral properties of HR3912

HR3912 belongs to spectral class G5 and has a luminosity class of I corresponding to a supergiant star.


The red dot in the diagram below shows where HR3912 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR3912. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3912