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public LocationGreenwich, UK
Sunrise: 5:12 
Transit: 13:06 
Sunset: 20:59
wb_twilight   (Nautical Twilight)   What's Visible Now?
All Constellations » Aquarius » 

Sadalsuud - β Aquarii (beta Aquarii)

Above the horizon.  Rise: 20:53 | Tran: 2:27 | Set: 7:58
Alt: 13.03°   Az: 116.59°   Direction: East-South-East

Sadalsuud, also designated as β Aquarii (beta Aquarii), is a multiple hypergiant star of spectral class G0 in the constellation of Aquarius.

Sadalsuud visual magnitude is 2.91. Because of its brightness, Sadalsuud is clearly visible to the naked eye when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.

Image of Sadalsuud - β Aquarii (beta Aquarii) star
DSS2 image of Sadalsuud. The red arrow shows the motion of Sadalsuud during the next 10000 years (3.50 arcmin in Right Ascension and -1.33 arcmin in declination);

Celestial Coordinates


21h 32m 50s
-05° 27’ 42”
19h 55m 44s
17h 28m 35s


21h 31m 33s
-05° 34’ 15”

Galactic Coordinates


Finder Chart

Finder chart Sadalsuud - β Aquarii (beta Aquarii) star
Simplified finder chart for Sadalsuud - β Aquarii (beta Aquarii).

Magnitude, Color, Spectral Class



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

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

Star System Properties

Sadalsuud is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the Sadalsuud double sysyem:

35.5 arcsec

Distance, Radial Speed, Proper Motion

Sadalsuud is distant 611.63 light years from the Sun and it is moving far from the Sun at the speed of 7 kilometers per second.

7 km/s
0.021 arcsec/y

Alternative Designations

β Aquarii
(beta Aquarii)

Visibility from Your Location

Today's Sadalsuud - β Aquarii (beta Aquarii) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 95.5°
Max altitude: 33.1°
Azimuth: 264.5°