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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:30 
Transit: 12:14 
Sunset: 16:58
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All Constellations » Cygnus » 

HR7777

Above the horizon.  Circumpolar today
Alt: 62.77°   Az: 275.74°   Direction: West

HR7777 is a variable main-sequence star of spectral class B2 in the constellation of Cygnus.

HR7777 visual magnitude is 6.45. Because of its faintness, HR7777 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 HR7777 star
DSS2 image of HR7777. The red arrow shows the motion of HR7777 during the next 10000 years (-0.83 arcmin in Right Ascension and 1.67 arcmin in declination);

Celestial Coordinates

Apparent

20h 19m 37s
+46° 24’ 09”
02h 45m 14s
23h 04m 52s

J2000

20h 18m 49s
+46° 19’ 22”

Galactic Coordinates

82.82°
5.8°

Finder Chart

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Finder chart for HR7777.

Magnitude, Color, Spectral Class

6.45
Main-sequence

-3.10
B2V
12103K

The red dot in the diagram below shows where HR7777 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7777. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR7777 is distant 2,650.41 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

813.01
2,650.41
-9 km/s
-0.005 arcsec/y
0.01"/y

Alternative Designations

SAO49462
SAO49462

Visibility from Your Location

HR7777 is circumpolar and transits at 11:12 UTC (altitude: 84.9°)