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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 6:25 
Transit: 12:57 
Sunset: 19:28
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All Constellations » Hercules » 

90 Herculis

Above the horizon.  Circumpolar today
Alt: 66.94°   Az: 108.42°   Direction: East-South-East

90 Herculis is a variable and double giant star of spectral class K1 in the constellation of Hercules.

90 Herculis visual magnitude is 5.16. Because of its faintness, 90 Herculis 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 90 Herculis star
DSS2 image of 90 Herculis. The red arrow shows the motion of 90 Herculis during the next 10000 years (1.83 arcmin in Right Ascension and 8.83 arcmin in declination);

Celestial Coordinates

Apparent

17h 54m 06s
+40° 00’ 15”
22h 03m 55s
15h 58m 02s

J2000

17h 53m 18s
+40° 00’ 29”

Galactic Coordinates

66.09°
27.66°

Finder Chart

Finder chart 90 Herculis star
Simplified finder chart for 90 Herculis.

Magnitude, Color, Spectral Class

5.16
Giant

-0.08
K1III
4348K

The red dot in the diagram below shows where 90 Herculis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 90 Herculis. Attribution: Richard Powell / CC BY-SA

Star System Properties

90 Herculis 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 90 Herculis double sysyem:

5.16
8.46
3.3
1.6 arcsec

Distance, Radial Speed, Proper Motion

90 Herculis is distant 363.43 light years from the Sun and it is moving towards the Sun at the speed of 35 kilometers per second.

111.48
363.43
-35 km/s
0.011 arcsec/y
0.053"/y

Alternative Designations

90 Herculis
SAO47037
SAO47037

Visibility from Your Location

90 Herculis is circumpolar and transits at 18:40 UTC (altitude: 78.5°)