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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 6:33 
Transit: 12:55 
Sunset: 19:17
wb_twilight   (Astronomical Twilight)  
What's Visible Now • Tonight Timeline
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All Constellations » Cygnus » 

HR7802

Above the horizon.  Circumpolar today
Alt: 23.60°   Az: 310.36°   Direction: North-West

HR7802 is a variable and multiple hypergiant star of spectral class K0 in the constellation of Cygnus.

HR7802 visual magnitude is 6.2. Because of its faintness, HR7802 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 HR7802 star
DSS2 image of HR7802. The red arrow shows the motion of HR7802 during the next 10000 years (8.83 arcmin in Right Ascension and 6.00 arcmin in declination);

Celestial Coordinates

Apparent

20h 23m 46s
+43° 03’ 49”
07h 08m 24s
03h 32m 11s

J2000

20h 22m 55s
+42° 58’ 59”

Galactic Coordinates

80.46°
3.32°

Finder Chart

Finder chart HR7802 star
Simplified finder chart for HR7802.

Magnitude, Color, Spectral Class

6.2
Hypergiant

1.17
K0III
4866K

The red dot in the diagram below shows where HR7802 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7802. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR7802 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR7802 double sysyem:

6.2
8
1.8
93.2 arcsec

Distance, Radial Speed, Proper Motion

HR7802 is distant 330.63 light years from the Sun and it is moving towards the Sun at the speed of 20 kilometers per second.

101.42
330.63
-20 km/s
0.053 arcsec/y
0.036"/y

Alternative Designations

SAO49550
SAO49550

Visibility from Your Location

HR7802 is circumpolar and transits at 20:50 UTC (altitude: 81.6°)