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Timezone: Europe/London
Sunrise: 5:06 
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In Evidence

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Detailed information about the discovery of Comet C/2025 J1 (Borisov) and pointers to useful resources to track and observe it. Read more...

Other stars in Cygnus
All Constellations » Cygnus » 

HR8170

Above the horizon.  Circumpolar today
Alt: 28.75°   Az: 299.94°   Direction: West-North-West

HR8170 is a main-sequence star of spectral class F8 in the constellation of Cygnus.

HR8170 visual magnitude is 6.4. Because of its faintness, HR8170 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 HR8170 star
DSS2 image of HR8170. The red arrow shows the motion of HR8170 during the next 1000 years (-0.32 arcmin in Right Ascension and -3.45 arcmin in declination);

Celestial Coordinates

Apparent

21h 22m 01s
+40° 27’ 15”
06h 12m 52s
03h 34m 53s

J2000

21h 21m 01s
+40° 20’ 44”

Galactic Coordinates

85.37°
-6.7°

Finder Chart

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Finder chart for HR8170.

Magnitude, Color, Spectral Class

⬤
6.4
Main-sequence

4.28
F8V
0.53
6256K

The red dot in the diagram below shows where HR8170 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8170. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR8170 is distant 86.61 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.

26.57
86.61
1 km/s
-0.019 arcsec/y
-0.207"/y

Alternative Designations

HD203454
SAO50739
SAO50739
HIP105406
BD+39 4529

Visibility from Your Location

HR8170 is circumpolar and transits at 05:41 UTC (altitude: 79.0°)