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
Your support keeps us free & ad-free » Donate
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:46  
clear_day Transit: 12:11  
SunsetSet: 17:36
wb_twilight Astronomical TwilightWhat's Visible Now?
All Constellations » Aquila » 

δ Aquilae (delta Aquilae)

Altitude: -32.4°   Azimuth: 334.1°   Direction: North-North-West

δ Aquilae is a variable and multiple sub-giant star in the constellation of Aquila.

δ Aquilae visual magnitude is 3.36. Because of its moderate brightness, δ Aquilae should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.

The proper motion of δ Aquilae is 0.257 arcsec per year in Right Ascension and 0.082 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of δ Aquilae (delta Aquilae) star
DSS2 image of δ Aquilae. The red arrow shows the motion of δ Aquilae during the next 1000 years (4.28 arcmin in Right Ascension and 1.37 arcmin in declination);

Key facts about δ Aquilae

3.36
Sub-giant

δ Aquilae (delta Aquilae) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -32.4°
Azimuth: 334.1°
Direction: North-North-West

Celestial coordinates and finder chart of δ Aquilae

δ 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 δ Aquilae are provided in the following table:

19h 25m 29s
+03° 06’ 52”
39.62°
-6.13°
Aquila

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

Finder chart δ Aquilae (delta Aquilae) star
Simplified finder chart for δ Aquilae (delta Aquilae).

Visibility of δ 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 δ Aquilae (delta 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: 86.9°
Max altitude: 41.6°
Azimuth: 273.1°

Distance of δ Aquilae from the Sun and relative movement

δ Aquilae is distant 50.12 light years from the Sun and it is moving towards the Sun at the speed of 30 kilometers per second.

15.37 pc
50.12 ly
-30 km/s
0.257 arcsec/year
0.082 arcsec/year

Spectral properties of δ Aquilae

δ Aquilae belongs to spectral class F3 and has a luminosity class of IV corresponding to a sub-giant star.

2.43
F3IV
7337K

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

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

δ Aquilae star system properties

δ Aquilae is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the δ Aquilae double sysyem:

3.36
10.86
7.5
108.9 arcsec

Alternative designations of δ Aquilae

δ Aquilae
(delta Aquilae)
SAO124603
SAO124603