We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:50  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
sunny DaytimeWhat's Visible Now?
All Constellations » Scorpius » 

11 Scorpii

Altitude: 20.3°   Azimuth: 147.4°   Direction: South-South-East

11 Scorpii is a double main-sequence star in the constellation of Scorpius.

11 Scorpii visual magnitude is 5.78. Because of its reltive faintness, 11 Scorpii 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 11 Scorpii:

5.78
Main-sequence

11 Scorpii is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 20.3°
Azimuth: 147.4°
Direction: South-South-East

Celestial coordinates and finder chart of 11 Scorpii

11 Scorpii 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 11 Scorpii are provided in the following table:

16h 07m 36s
-12° 44’ 44”
359.41°
27.93°
Scorpius

The simplified sky map below shows the position of 11 Scorpii in the sky:

Finder chart 11 Scorpii star
Simplified finder chart for 11 Scorpii.

Visibility of 11 Scorpii 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 11 Scorpii 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: 102.7°
Max altitude: 25.8°
Azimuth: 257.3°

Digitized Sky Survey image of 11 Scorpii

The image below is a photograph of 11 Scorpii 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 11 Scorpii is -0.045 arcsec per year in Right Ascension and -0.029 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 11 Scorpii star
DSS2 image of 11 Scorpii. The red arrow shows the motion of 11 Scorpii during the next 10000 years (-7.50 arcmin in Right Ascension and -4.83 arcmin in declination);

Distance of 11 Scorpii from the Sun and relative movement

11 Scorpii is distant 425.59 light years from the Sun and it is moving towards the Sun at the speed of 25 kilometers per second.

130.55 pc
425.59 ly
-25 km/s
-0.045 arcsec/year
-0.029 arcsec/year

Spectral properties of 11 Scorpii

11 Scorpii belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star.

0.20
B9V
10002K

The red dot in the diagram below shows where 11 Scorpii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 11 Scorpii. Attribution: Richard Powell / CC BY-SA

11 Scorpii star system properties

11 Scorpii 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 11 Scorpii double sysyem:

5.78
10.08
4.3
3.5 arcsec

Alternative designations of 11 Scorpii

SAO159715
SAO159715