Alniyat - σ Scorpii (sigma Scorpii)
Alniyat, also designated as σ Scorpii (sigma Scorpii), is a variable and multiple giant star in the constellation of Scorpius.
Alniyat visual magnitude is 2.89. Thanks to its high brightness, Alniyat 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 Alniyat:
Celestial coordinates and finder chart of Alniyat
Alniyat is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Alniyat are provided in the following table:
The simplified sky map below shows the position of Alniyat in the sky:
Visibility of Alniyat from your location
Digitized Sky Survey image of Alniyat
The image below is a photograph of Alniyat 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 Alniyat is -0.01 arcsec per year in Right Ascension and -0.021 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of Alniyat from the Sun and relative movement
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.
Spectral properties of Alniyat
Alniyat belongs to spectral class B1 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where Alniyat is situated in the Hertzsprung–Russell diagram.
Alniyat 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: