Sadalsuud - β Aquarii (beta Aquarii)
Sadalsuud, also designated as β Aquarii (beta Aquarii), is a multiple hypergiant star in the constellation of Aquarius.
Sadalsuud visual magnitude is 2.91. Thanks to its high brightness, Sadalsuud is clearly visible when observed from locations with dark skyes, and should be also quite easily visible from light polluted areas.
The table below summarizes the key facts about Sadalsuud:
Celestial coordinates and finder chart of Sadalsuud
Sadalsuud is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Sadalsuud are provided in the following table:
The simplified sky map below shows the position of Sadalsuud in the sky:
Visibility of Sadalsuud from your location
Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Today's Sadalsuud - β Aquarii (beta Aquarii) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):
Digitized Sky Survey image of Sadalsuud
The image below is a photograph of Sadalsuud from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of Sadalsuud is 0.021 arcsec per year in Right Ascension and -0.008 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of Sadalsuud from the Sun and relative movement
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.
Spectral properties of Sadalsuud
Sadalsuud belongs to spectral class G0 and has a luminosity class of I corresponding to a hypergiant star.
The red dot in the diagram below shows where Sadalsuud is situated in the Hertzsprung–Russell diagram.
Sadalsuud 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: