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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 5:01 
Transit: 12:56 
Sunset: 20:52
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All Constellations » Scorpius » 

Alniyat - σ Scorpii (sigma Scorpii)

Below the horizon.  Rise: 21:52 | Tran: 1:27 | Set: 4:57
Alt: -17.60°   Az: 109.32°   Direction: East-South-East

Alniyat, also designated as σ Scorpii (sigma Scorpii), is a variable and multiple giant star of spectral class B1 in the constellation of Scorpius.

Alniyat visual magnitude is 2.89. Because of its brightness, Alniyat 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 Alniyat - σ Scorpii (sigma Scorpii) star
DSS2 image of Alniyat. The red arrow shows the motion of Alniyat during the next 10000 years (-1.67 arcmin in Right Ascension and -3.50 arcmin in declination);

Celestial Coordinates

Apparent

16h 22m 44s
-25° 39’ 05”
18h 14m 51s
10h 37m 35s

J2000

16h 21m 11s
-25° 35’ 34”

Galactic Coordinates

351.31°
17°

Finder Chart

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Finder chart for Alniyat - σ Scorpii (sigma Scorpii).

Magnitude, Color, Spectral Class

2.89
Giant

-3.87
B1III
8748K

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

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

Star System Properties

Alniyat 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 Alniyat double sysyem:

2.89
4.89
2
0 arcsec

Distance, Radial Speed, Proper Motion

Alniyat is distant 734.23 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

225.23
734.23
3 km/s
-0.01 arcsec/y
-0.021"/y

Alternative Designations

Alniyat
σ Scorpii
(sigma Scorpii)
SAO184336
SAO184336

Visibility from Your Location

Today's Alniyat - σ Scorpii (sigma Scorpii) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 115.7°
Max altitude: 12.9°
Azimuth: 244.3°