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public LocationGreenwich, UK
Sunrise: 5:14 
Transit: 13:06 
Sunset: 20:58
sunny   (Daytime)   What's Visible Now?
All Constellations » Aquila » 


Below the horizon.  Rise: 18:58 | Tran: 1:04 | Set: 7:07
Alt: -21.51°   Az: 301.56°   Direction: West-North-West

HR7717 is a double star of spectral class B9 in the constellation of Aquila.

HR7717 visual magnitude is 6.27. Because of its faintness, HR7717 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Image of HR7717 star
DSS2 image of HR7717. The red arrow shows the motion of HR7717 during the next 10000 years (1.67 arcmin in Right Ascension and -2.33 arcmin in declination);

Celestial Coordinates


20h 13m 50s
+00° 56’ 33”
08h 30m 11s
04h 44m 01s


20h 12m 35s
+00° 52’ 03”

Galactic Coordinates


Finder Chart

Finder chart HR7717 star
Simplified finder chart for HR7717.

Magnitude, Color, Spectral Class

HR7717 is also a CrEuSr chemically peculiar star.


The red dot in the diagram below shows where HR7717 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7717. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR7717 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR7717 double sysyem:

2.8 arcsec

Distance, Radial Speed, Proper Motion

HR7717 is distant 602.59 light years from the Sun and it is moving towards the Sun at the speed of 19 kilometers per second.

-19 km/s
0.01 arcsec/y

Alternative Designations


Visibility from Your Location

Today's HR7717 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 89.1°
Max altitude: 39.5°
Azimuth: 270.9°