Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:45  
clear_day Transit: 12:57  
SunsetSet: 21:10 south
sunny DaytimeWhat's Visible Now
All Constellations » Columba » 


Altitude: 0.3°   Azimuth: 197.7°   Direction: South-South-West

HR2431 is a double hypergiant star in the constellation of Columba.

HR2431 visual magnitude is 6.35. Because of its reltive faintness, HR2431 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 HR2431:


HR2431 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 0.3°
Azimuth: 197.7°
Direction: South-South-West

Celestial coordinates and finder chart of HR2431

HR2431 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 HR2431 are provided in the following table:

06h 35m 53s
-36° 05’ 20”

The simplified sky map below shows the position of HR2431 in the sky:

Finder chart HR2431 star
Simplified finder chart for HR2431.

Visibility of HR2431 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 HR2431 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: 126.1°
Max altitude: 2.4°
Azimuth: 233.9°
HR2431 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR2431

The image below is a photograph of HR2431 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 HR2431 is -0.058 arcsec per year in Right Ascension and -0.095 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR2431 star
DSS2 image of HR2431. The red arrow shows the motion of HR2431 during the next 1000 years (-0.97 arcmin in Right Ascension and -1.58 arcmin in declination);

Distance of HR2431 from the Sun and relative movement

HR2431 is distant 131.29 light years from the Sun and it is moving far from the Sun at the speed of 28 kilometers per second.

40.27 pc
131.29 ly
28 km/s
-0.058 arcsec/year
-0.095 arcsec/year

Spectral properties of HR2431

HR2431 belongs to spectral class G0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR2431 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR2431. Attribution: Richard Powell / CC BY-SA

HR2431 star system properties

HR2431 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR2431 double sysyem:

0.2 arcsec

Alternative designations of HR2431