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public LocationGreenwich, UK
Sunrise: 4:42 
Transit: 13:00 
Sunset: 21:18
sunny   (Daytime)   What's Visible Now?

Sadalmelik - α Aquarii (alpha Aquarii)

Above the horizon.  Rise: 23:02 | Tran: 5:02 | Set: 10:58
Altitude: 31.9°   Azimuth: 217.6°   Direction: South-West

Sadalmelik, also designated as α Aquarii (alpha Aquarii), is a double supergiant star of spectral class G2 in the constellation of Aquarius.

Sadalmelik visual magnitude is 2.96. Because of its brightness, Sadalmelik 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.

Celestial coordinates and finder chart of Sadalmelik

Finder chart Sadalmelik - α Aquarii (alpha Aquarii) star
Simplified finder chart for Sadalmelik - α Aquarii (alpha Aquarii).

Sadalmelik 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 Sadalmelik are provided in the following table:

22h 05m 47s
-00° 19’ 10”
Image of Sadalmelik - α Aquarii (alpha Aquarii) star
DSS2 image of Sadalmelik. The red arrow shows the motion of Sadalmelik during the next 10000 years (3.33 arcmin in Right Ascension and -1.67 arcmin in declination);

Key facts about Sadalmelik


and has a luminosity class of I corresponding to a supergiant star.


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

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

Sadalmelik star system properties

Sadalmelik 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 Sadalmelik double sysyem:

113 arcsec

Distance of Sadalmelik from the Sun and relative movement

Sadalmelik is distant 758.14 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

232.56 pc
758.14 ly
8 km/s
0.02 arcsec/year
-0.01 arcsec/year

Alternative designations of Sadalmelik

α Aquarii
(alpha Aquarii)

Visibility of Sadalmelik from your location

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

Azimuth: 90.3°
Max altitude: 38.2°
Azimuth: 269.7°