Your Guide to the Solar System and the Night Sky
Donate now! You'll help cover server costs, enhance the site and keep it ad-free.
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:46  
clear_day Transit: 12:56  
SunsetSet: 21:07 south
sunny DaytimeWhat's Visible Now
All Constellations » Aquila » 

66 Aquilae

Altitude: -4.3°   Azimuth: 273.8°   Direction: West

66 Aquilae is a giant star in the constellation of Aquila.

66 Aquilae visual magnitude is 5.47. Because of its reltive faintness, 66 Aquilae should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 66 Aquilae:


66 Aquilae is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -4.3°
Azimuth: 273.8°
Direction: West

Celestial coordinates and finder chart of 66 Aquilae

66 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 66 Aquilae are provided in the following table:

20h 13m 13s
-01° 00’ 33”

The simplified sky map below shows the position of 66 Aquilae in the sky:

Finder chart 66 Aquilae star
Simplified finder chart for 66 Aquilae.

Visibility of 66 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 66 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: 91.0°
Max altitude: 37.5°
Azimuth: 269.0°
66 Aquilae is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 66 Aquilae

The image below is a photograph of 66 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 66 Aquilae is 0.022 arcsec per year in Right Ascension and -0.028 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 66 Aquilae star
DSS2 image of 66 Aquilae. The red arrow shows the motion of 66 Aquilae during the next 10000 years (3.67 arcmin in Right Ascension and -4.67 arcmin in declination);

Distance of 66 Aquilae from the Sun and relative movement

66 Aquilae is distant 888.28 light years from the Sun and it is moving towards the Sun at the speed of 28 kilometers per second.

272.48 pc
888.28 ly
-28 km/s
0.022 arcsec/year
-0.028 arcsec/year

Spectral properties of 66 Aquilae

66 Aquilae belongs to spectral class K5 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 66 Aquilae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 66 Aquilae. Attribution: Richard Powell / CC BY-SA

Alternative designations of 66 Aquilae