Sadalsuud - β Aquarii (beta Aquarii)

Below the horizon. Rise: 22:40 | Tran: 4:14 | Set: 9:45

Alt: -22.41° Az: 290.66° Direction: South

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

Apparent

Right Ascension 21h 32m 53s

Declination -05° 27’ 27”

Hour Angle 07h 58m 37s

Sidereal Time 05h 31m 31s

J2000

Right Ascension 21h 31m 33s

Declination -05° 34’ 15”

Galactic Coordinates

Galactic Longitude 48.02°

Galactic Latitude -37.88°

Finder Chart

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Finder chart for Sadalsuud - β Aquarii (beta Aquarii).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 2.91

Class Hypergiant

Absolute magnitude -3.46

Spectral Type G0I

Color Index (B-V) 0.83

Temperature 5192K

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

Main star magnitude 2.91

Secondary star magnitude 10.81

Magnitude difference 7.9

Separation 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.

Distance (parsec) 187.62

Distance (light year) 611.63

Radial Speed 7 km/s

Proper Motion RA 0.021 arcsec/y

Proper Motion Dec -0.008"/y

Alternative Designations

Proper Name Sadalsuud

Bayer designation β Aquarii
(beta Aquarii)

Flamsteed designation 22 Aquarii

Henry Draper Catalogue HD204867

SAO Catalogue SAO145457

Hipparcos Catalogue HIP106278

Durchmusterung Catalogue BD-06 5770

FK5 Catalogue 808

Aitken Double Star Catalogue ADS15050

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° RISE 22:40

Max altitude: 33.1° TRANSIT 4:14

Azimuth: 264.5° SET 9:45

Set Location

Other stars in Aquarius