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: 4:52  
clear_day Transit: 12:55  
SunsetSet: 20:59 south
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All Constellations » Puppis » 


HR3118 is a double main-sequence star in the constellation of Puppis.

HR3118 visual magnitude is 6.22. Because of its reltive faintness, HR3118 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 HR3118:

HR3118 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR3118

HR3118 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 HR3118 are provided in the following table:

07h 57m 20s
-47° 53’ 25”

The simplified sky map below shows the position of HR3118 in the sky:

Finder chart HR3118 star
Simplified finder chart for HR3118.

Visibility of HR3118 from your location

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

HR3118 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR3118

The image below is a photograph of HR3118 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 HR3118 is -0.02 arcsec per year in Right Ascension and 0.014 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3118 star
DSS2 image of HR3118. The red arrow shows the motion of HR3118 during the next 10000 years (-3.33 arcmin in Right Ascension and 2.33 arcmin in declination);

Distance of HR3118 from the Sun and relative movement

HR3118 is distant 1,009.29 light years from the Sun and it is moving far from the Sun at the speed of 12 kilometers per second.

309.60 pc
1,009.29 ly
12 km/s
-0.02 arcsec/year
0.014 arcsec/year

Spectral properties of HR3118

HR3118 belongs to spectral class B5 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR3118 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR3118. Attribution: Richard Powell / CC BY-SA

HR3118 star system properties

HR3118 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 HR3118 double sysyem:

0.5 arcsec

Alternative designations of HR3118