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: 4:44  
clear_day Transit: 12:57  
SunsetSet: 21:11 south
wb_twilight Civil TwilightWhat's Visible Now
All Constellations » Canis Major » 


Altitude: -28.5°   Azimuth: 269.0°   Direction: West

HR2481 is a variable and double hypergiant star in the constellation of Canis Major.

HR2481 visual magnitude is 6.13. Because of its reltive faintness, HR2481 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 HR2481:


HR2481 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -28.5°
Azimuth: 269.0°
Direction: West

Celestial coordinates and finder chart of HR2481

HR2481 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 HR2481 are provided in the following table:

06h 42m 45s
-22° 26’ 57”
Canis Major

The simplified sky map below shows the position of HR2481 in the sky:

Finder chart HR2481 star
Simplified finder chart for HR2481.

Visibility of HR2481 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 HR2481 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: 112.4°
Max altitude: 16.1°
Azimuth: 247.6°
HR2481 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR2481

The image below is a photograph of HR2481 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 HR2481 is -0.085 arcsec per year in Right Ascension and 0.078 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR2481 star
DSS2 image of HR2481. The red arrow shows the motion of HR2481 during the next 10000 years (-14.17 arcmin in Right Ascension and 13.00 arcmin in declination);

Distance of HR2481 from the Sun and relative movement

HR2481 is distant 159.41 light years from the Sun and it is moving far from the Sun at the speed of 44 kilometers per second.

48.90 pc
159.41 ly
44 km/s
-0.085 arcsec/year
0.078 arcsec/year

Spectral properties of HR2481

HR2481 belongs to spectral class F0


The red dot in the diagram below shows where HR2481 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR2481. Attribution: Richard Powell / CC BY-SA

HR2481 star system properties

HR2481 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 HR2481 double sysyem:

18.2 arcsec

Alternative designations of HR2481