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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: 6:40  
clear_day Transit: 12:10  
SunsetSet: 17:41
sunny DaytimeWhat's Visible Now?
All Constellations » Carina » 


Altitude: -58.4°   Azimuth: 128.3°   Direction: South-East

HR3138 is a multiple hypergiant star in the constellation of Carina.

HR3138 visual magnitude is 5.6. Because of its reltive faintness, HR3138 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 HR3138 is 0.517 arcsec per year in Right Ascension and 0.114 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR3138 star
DSS2 image of HR3138. The red arrow shows the motion of HR3138 during the next 1000 years (8.62 arcmin in Right Ascension and 1.90 arcmin in declination);

Key facts about HR3138


HR3138 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -58.4°
Azimuth: 128.3°
Direction: South-East

Celestial coordinates and finder chart of HR3138

HR3138 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 HR3138 are provided in the following table:

07h 57m 46s
-60° 18’ 11”

The simplified sky map below shows the position of HR3138 in the sky:

Finder chart HR3138 star
Simplified finder chart for HR3138.

Visibility of HR3138 from your location

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

HR3138 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR3138 from the Sun and relative movement

HR3138 is distant 52.78 light years from the Sun and it is moving far from the Sun at the speed of 14 kilometers per second.

16.19 pc
52.78 ly
14 km/s
0.517 arcsec/year
0.114 arcsec/year

Spectral properties of HR3138

HR3138 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 HR3138 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3138. Attribution: Richard Powell / CC BY-SA

HR3138 star system properties

HR3138 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 HR3138 double sysyem:

60 arcsec

Alternative designations of HR3138

Gl 294 A