Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 5:54  ☀️ Transit: 12:05  🌅 Sunset: 18:16

η Aquilae (eta Aquilae)

η Aquilae is a variable supergiant star in the constellation of Aquila.

η Aquilae visual magnitude is 3.9. Because of its moderate brightness, η 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 η Aquilae:

η Aquilae (eta Aquilae) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 39°.

Celestial coordinates and finder chart of η Aquilae

η 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 η Aquilae are provided in the following table:

19h 52m 28s
+01° 00’ 20”

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

Finder chart η Aquilae (eta Aquilae) star
Simplified finder chart for η Aquilae (eta Aquilae).

Visibility of η Aquilae from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's η Aquilae (eta Aquilae) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 89.0°
Max altitude: 39.5°
Azimuth: 271.0°
η Aquilae (eta Aquilae) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of η Aquilae

The image below is a photograph of η 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 η Aquilae is 0.011 arcsec per year in Right Ascension and -0.007 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of η Aquilae (eta Aquilae) star
DSS2 image of η Aquilae. The red arrow shows the motion of η Aquilae during the next 10000 years (1.83 arcmin in Right Ascension and -1.17 arcmin in declination);

Distance of η Aquilae from the Sun and relative movement

η Aquilae is distant 1,172.66 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

359.71 pc
1,172.66 ly
-15 km/s
0.011 arcsec/year
-0.007 arcsec/year

Spectral properties of η Aquilae

η Aquilae belongs to spectral class F6 and has a luminosity class of I corresponding to a supergiant star.


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

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

Alternative designations of η Aquilae

η Aquilae
(eta Aquilae)