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: 7:47  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sleep NighttimeWhat's Visible Now?
All Constellations » Aquila » 

Libertas - ξ Aquilae (xi Aquilae)

Altitude: 33.2°   Azimuth: 237.3°   Direction: West-South-West

Libertas, also designated as ξ Aquilae (xi Aquilae), is a giant star in the constellation of Aquila.

Libertas visual magnitude is 4.71. Because of its moderate brightness, Libertas should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about Libertas:


Libertas - ξ Aquilae (xi Aquilae) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 33.2°
Azimuth: 237.3°
Direction: West-South-West

Celestial coordinates and finder chart of Libertas

Libertas 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 Libertas are provided in the following table:

19h 54m 14s
+08° 27’ 41”

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

Finder chart Libertas - ξ Aquilae (xi Aquilae) star
Simplified finder chart for Libertas - ξ Aquilae (xi Aquilae).

Visibility of Libertas 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 Libertas - ξ Aquilae (xi Aquilae) 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: 81.5°
Max altitude: 47.0°
Azimuth: 278.5°

Digitized Sky Survey image of Libertas

The image below is a photograph of Libertas 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 Libertas is 0.101 arcsec per year in Right Ascension and -0.081 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of Libertas - ξ Aquilae (xi Aquilae) star
DSS2 image of Libertas. The red arrow shows the motion of Libertas during the next 1000 years (1.68 arcmin in Right Ascension and -1.35 arcmin in declination);

Distance of Libertas from the Sun and relative movement

Libertas is distant 204.26 light years from the Sun and it is moving towards the Sun at the speed of 42 kilometers per second.

62.66 pc
204.26 ly
-42 km/s
0.101 arcsec/year
-0.081 arcsec/year

Spectral properties of Libertas

Libertas belongs to spectral class G9 and has a luminosity class of III corresponding to a giant star.


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

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

Alternative designations of Libertas

ξ Aquilae
(xi Aquilae)