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: 7:54  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
sunny DaytimeWhat's Visible Now?
All Constellations » Aquila » 

12 Aquilae

Altitude: 29.2°   Azimuth: 207.6°   Direction: South-South-West

12 Aquilae is a variable giant star in the constellation of Aquila.

12 Aquilae visual magnitude is 4.02. Because of its moderate brightness, 12 Aquilae 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 12 Aquilae:


12 Aquilae is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 29.2°
Azimuth: 207.6°
Direction: South-South-West

Celestial coordinates and finder chart of 12 Aquilae

12 Aquilae 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 12 Aquilae are provided in the following table:

19h 01m 40s
-05° 44’ 20”

The simplified sky map below shows the position of 12 Aquilae in the sky:

Finder chart 12 Aquilae star
Simplified finder chart for 12 Aquilae.

Visibility of 12 Aquilae 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 12 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: 95.7°
Max altitude: 32.8°
Azimuth: 264.3°

Digitized Sky Survey image of 12 Aquilae

The image below is a photograph of 12 Aquilae 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 12 Aquilae is -0.019 arcsec per year in Right Ascension and -0.033 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 12 Aquilae star
DSS2 image of 12 Aquilae. The red arrow shows the motion of 12 Aquilae during the next 10000 years (-3.17 arcmin in Right Ascension and -5.50 arcmin in declination);

Distance of 12 Aquilae from the Sun and relative movement

12 Aquilae is distant 148.52 light years from the Sun and it is moving towards the Sun at the speed of 44 kilometers per second.

45.56 pc
148.52 ly
-44 km/s
-0.019 arcsec/year
-0.033 arcsec/year

Spectral properties of 12 Aquilae

12 Aquilae belongs to spectral class K1 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 12 Aquilae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 12 Aquilae. Attribution: Richard Powell / CC BY-SA

Alternative designations of 12 Aquilae