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: 7:00  
clear_day Transit: 12:48  
SunsetSet: 18:34 south
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All Constellations » Libra » 

16 Librae

Altitude: -7.5°   Azimuth: 272.5°   Direction: West

16 Librae is a hypergiant star in the constellation of Libra.

16 Librae visual magnitude is 4.49. Because of its moderate brightness, 16 Librae 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 16 Librae:


16 Librae is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -7.5°
Azimuth: 272.5°
Direction: West

Celestial coordinates and finder chart of 16 Librae

16 Librae 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 16 Librae are provided in the following table:

14h 57m 11s
-04° 20’ 47”

The simplified sky map below shows the position of 16 Librae in the sky:

Finder chart 16 Librae star
Simplified finder chart for 16 Librae.

Visibility of 16 Librae 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 16 Librae 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: 94.3°
Max altitude: 34.2°
Azimuth: 265.7°

Digitized Sky Survey image of 16 Librae

The image below is a photograph of 16 Librae 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 16 Librae is -0.094 arcsec per year in Right Ascension and -0.15 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 16 Librae star
DSS2 image of 16 Librae. The red arrow shows the motion of 16 Librae during the next 1000 years (-1.57 arcmin in Right Ascension and -2.50 arcmin in declination);

Distance of 16 Librae from the Sun and relative movement

16 Librae is distant 90.99 light years from the Sun and it is moving far from the Sun at the speed of 22 kilometers per second.

27.91 pc
90.99 ly
22 km/s
-0.094 arcsec/year
-0.15 arcsec/year

Spectral properties of 16 Librae

16 Librae belongs to spectral class F0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where 16 Librae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 16 Librae. Attribution: Richard Powell / CC BY-SA

Alternative designations of 16 Librae