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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
SunriseRise: 5:51  
clear_day Transit: 12:57  
SunsetSet: 20:04
sunny DaytimeWhat's Visible Now?
All Constellations » Vela » 


Altitude: -11.3°   Azimuth: 168.7°   Direction: South-South-East

HR3831 is a variable and double star in the constellation of Vela.

HR3831 visual magnitude is 6.17. Because of its reltive faintness, HR3831 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 HR3831 is -0.011 arcsec per year in Right Ascension and -0.024 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3831 star
DSS2 image of HR3831. The red arrow shows the motion of HR3831 during the next 10000 years (-1.83 arcmin in Right Ascension and -4.00 arcmin in declination);

Key facts about HR3831


HR3831 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -11.3°
Azimuth: 168.7°
Direction: South-South-East

Celestial coordinates and finder chart of HR3831

HR3831 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 HR3831 are provided in the following table:

09h 36m 25s
-48° 45’ 05”

The simplified sky map below shows the position of HR3831 in the sky:

Finder chart HR3831 star
Simplified finder chart for HR3831.

Visibility of HR3831 from your location

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

HR3831 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR3831 from the Sun and relative movement

HR3831 is distant 236.23 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.

72.46 pc
236.23 ly
-4 km/s
-0.011 arcsec/year
-0.024 arcsec/year

Spectral properties of HR3831

HR3831 belongs to spectral class A HR3831 is also a SrEuCr chemically peculiar star.


The red dot in the diagram below shows where HR3831 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR3831. Attribution: Richard Powell / CC BY-SA

HR3831 star system properties

HR3831 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR3831 double sysyem:

3.1 arcsec

Alternative designations of HR3831