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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: 6:38  
clear_day Transit: 12:10  
SunsetSet: 17:43
sleep NighttimeWhat's Visible Now?
All Constellations » Puppis » 


Altitude: 19.9°   Azimuth: 173.4°   Direction: South

HR3131 is a main-sequence star in the constellation of Puppis.

HR3131 visual magnitude is 4.61. Because of its moderate brightness, HR3131 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 HR3131 is -0.002 arcsec per year in Right Ascension and -0.039 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3131 star
DSS2 image of HR3131. The red arrow shows the motion of HR3131 during the next 10000 years (-0.33 arcmin in Right Ascension and -6.50 arcmin in declination);

Key facts about HR3131


HR3131 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 19.9°
Azimuth: 173.4°
Direction: South

Celestial coordinates and finder chart of HR3131

HR3131 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR3131 are provided in the following table:

07h 59m 52s
-18° 23’ 57”

The simplified sky map below shows the position of HR3131 in the sky:

Finder chart HR3131 star
Simplified finder chart for HR3131.

Visibility of HR3131 from your location

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

Today's HR3131 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 108.4°
Max altitude: 20.1°
Azimuth: 251.6°

Distance of HR3131 from the Sun and relative movement

HR3131 is distant 238.13 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

73.05 pc
238.13 ly
-12 km/s
-0.002 arcsec/year
-0.039 arcsec/year

Spectral properties of HR3131

HR3131 belongs to spectral class A2 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR3131 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR3131. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3131