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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 4:56 
Transit: 12:56 
Sunset: 20:58
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All Constellations » Aquila » 

HR7803

Above the horizon.  Rise: 23:06 | Tran: 5:13 | Set: 11:17
Alt: 31.71°   Az: 137.59°   Direction: South-East

HR7803 is a variable and multiple main-sequence star of spectral class B9 in the constellation of Aquila.

HR7803 visual magnitude is 6.15. Because of its faintness, HR7803 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 HR7803 star
DSS2 image of HR7803. The red arrow shows the motion of HR7803 during the next 100000 years (5.00 arcmin in Right Ascension and 11.67 arcmin in declination);

Celestial Coordinates

Apparent

20h 25m 55s
+01° 09’ 08”
21h 39m 55s
18h 05m 50s

J2000

20h 24m 37s
+01° 04’ 06”

Galactic Coordinates

45.03°
-20.09°

Finder Chart

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Finder chart for HR7803.

Magnitude, Color, Spectral Class

6.15
Main-sequence

-0.91
B9V
10653K

The red dot in the diagram below shows where HR7803 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7803. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR7803 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR7803 double sysyem:

6.15
10.85
4.7
31.3 arcsec

Distance, Radial Speed, Proper Motion

HR7803 is distant 840.21 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

257.73
840.21
-9 km/s
0.003 arcsec/y
0.007"/y

Alternative Designations

SAO125769
SAO125769

Visibility from Your Location

Today's HR7803 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 88.8°
Max altitude: 39.7°
Azimuth: 271.2°