Your guide to the Solar System and the night sky
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🌎  Greenwich, United Kingdom [change]

Sargas - θ Scorpii (theta Scorpii)

Sargas, also designated as θ Scorpii (theta Scorpii), is a variable bright giant star in the constellation of Scorpius.

Sargas visual magnitude is 1.87, making it the 39th brightest star in the sky. Thanks to its high brightness, Sargas 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 Sargas:

Bright giant
Sargas - θ Scorpii (theta Scorpii) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of Sargas

Sargas 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 Sargas are provided in the following table:

17h 37m 19s
-42° 59’ 52”

The simplified sky map below shows the position of Sargas in the sky:

Finder chart Sargas - θ Scorpii (theta Scorpii) star
Simplified finder chart for Sargas - θ Scorpii (theta Scorpii).

Visibility of Sargas from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Sargas - θ Scorpii (theta Scorpii) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of Sargas

The image below is a photograph of Sargas 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 Sargas is 0.015 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of Sargas - θ Scorpii (theta Scorpii) star
DSS2 image of Sargas. The red arrow shows the motion of Sargas during the next 10000 years (2.50 arcmin in Right Ascension and -0.33 arcmin in declination);

Distance of Sargas from the Sun and relative movement

Sargas is distant 271.89 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.

83.40 pc
271.89 ly
1 km/s
0.015 arcsec/year
-0.002 arcsec/year

Spectral properties of Sargas

Sargas belongs to spectral class F1 and has a luminosity class of II corresponding to a bright giant star.


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

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

Alternative designations of Sargas

θ Scorpii
(theta Scorpii)