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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 6:38 
Transit: 12:54 
Sunset: 19:10
wb_twilight   (Astronomical Twilight)  
What's Visible Now • Tonight Timeline
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All Constellations » Hercules » 

43 Herculis

Above the horizon.  Rise: 11:21 | Tran: 18:02 | Set: 0:43
Alt: 34.04°   Az: 235.88°   Direction: South-West

43 Herculis is a variable and multiple giant star of spectral class K5 in the constellation of Hercules.

43 Herculis visual magnitude is 5.15. Because of its faintness, 43 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 43 Herculis star
DSS2 image of 43 Herculis. The red arrow shows the motion of 43 Herculis during the next 10000 years (0.00 arcmin in Right Ascension and 2.50 arcmin in declination);

Celestial Coordinates

Apparent

16h 47m 01s
+08° 32’ 20”
02h 55m 40s
19h 42m 42s

J2000

16h 45m 49s
+08° 34’ 56”

Galactic Coordinates

26.03°
31.77°

Finder Chart

Finder chart 43 Herculis star
Simplified finder chart for 43 Herculis.

Magnitude, Color, Spectral Class

5.15
Giant

-0.01
K5III
3749K

The red dot in the diagram below shows where 43 Herculis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 43 Herculis. Attribution: Richard Powell / CC BY-SA

Star System Properties

43 Herculis is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 43 Herculis double sysyem:

5.15
9.05
3.9
82.5 arcsec

Distance, Radial Speed, Proper Motion

43 Herculis is distant 350.54 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

107.53
350.54
-21 km/s
0.015"/y

Alternative Designations

43 Herculis
SAO121843
SAO121843

Visibility from Your Location

Today's 43 Herculis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 81.5°
Max altitude: 47.1°
Azimuth: 278.5°