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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
north SunriseRise: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sunny DaytimeWhat's Visible Now?
All Constellations » Orion » 

13 Orionis

Altitude: -23.0°   Azimuth: 34.8°   Direction: North-East

13 Orionis is a multiple sub-giant star in the constellation of Orion.

13 Orionis visual magnitude is 6.17. Because of its reltive faintness, 13 Orionis 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 13 Orionis:


13 Orionis is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -23.0°
Azimuth: 34.8°
Direction: North-East

Celestial coordinates and finder chart of 13 Orionis

13 Orionis 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 13 Orionis are provided in the following table:

05h 07m 38s
+09° 28’ 18”

The simplified sky map below shows the position of 13 Orionis in the sky:

Finder chart 13 Orionis star
Simplified finder chart for 13 Orionis.

Visibility of 13 Orionis 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 13 Orionis 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: 80.5°
Max altitude: 48.0°
Azimuth: 279.5°

Digitized Sky Survey image of 13 Orionis

The image below is a photograph of 13 Orionis 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 13 Orionis is -0.003 arcsec per year in Right Ascension and -0.378 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 13 Orionis star
DSS2 image of 13 Orionis. The red arrow shows the motion of 13 Orionis during the next 1000 years (-0.05 arcmin in Right Ascension and -6.30 arcmin in declination);

Distance of 13 Orionis from the Sun and relative movement

13 Orionis is distant 92.25 light years from the Sun and it is moving towards the Sun at the speed of 24 kilometers per second.

28.30 pc
92.25 ly
-24 km/s
-0.003 arcsec/year
-0.378 arcsec/year

Spectral properties of 13 Orionis

13 Orionis belongs to spectral class G1 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where 13 Orionis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 13 Orionis. Attribution: Richard Powell / CC BY-SA

13 Orionis star system properties

13 Orionis is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 13 Orionis double sysyem:

124 arcsec

Alternative designations of 13 Orionis