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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:50  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
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All Constellations » Scorpius » 

ω2 Scorpii (omega2 Scorpii)

Altitude: -30.6°   Azimuth: 274.5°   Direction: West

ω2 Scorpii is a variable bright giant star in the constellation of Scorpius.

ω2 Scorpii visual magnitude is 4.32. Because of its moderate brightness, ω2 Scorpii should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about ω2 Scorpii:

Bright giant

ω2 Scorpii (omega2 Scorpii) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -30.6°
Azimuth: 274.5°
Direction: West

Celestial coordinates and finder chart of ω2 Scorpii

ω2 Scorpii 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 ω2 Scorpii are provided in the following table:

16h 07m 24s
-20° 52’ 06”

The simplified sky map below shows the position of ω2 Scorpii in the sky:

Finder chart ω2 Scorpii (omega2 Scorpii) star
Simplified finder chart for ω2 Scorpii (omega2 Scorpii).

Visibility of ω2 Scorpii from your location

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

Today's ω2 Scorpii (omega2 Scorpii) rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 110.9°
Max altitude: 17.7°
Azimuth: 249.1°

Digitized Sky Survey image of ω2 Scorpii

The image below is a photograph of ω2 Scorpii 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 ω2 Scorpii is 0.041 arcsec per year in Right Ascension and -0.038 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ω2 Scorpii (omega2 Scorpii) star
DSS2 image of ω2 Scorpii. The red arrow shows the motion of ω2 Scorpii during the next 10000 years (6.83 arcmin in Right Ascension and -6.33 arcmin in declination);

Distance of ω2 Scorpii from the Sun and relative movement

ω2 Scorpii is distant 264.61 light years from the Sun and it is moving towards the Sun at the speed of 5 kilometers per second.

81.17 pc
264.61 ly
-5 km/s
0.041 arcsec/year
-0.038 arcsec/year

Spectral properties of ω2 Scorpii

ω2 Scorpii belongs to spectral class G3 and has a luminosity class of II corresponding to a bright giant star.


The red dot in the diagram below shows where ω2 Scorpii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of ω2 Scorpii. Attribution: Richard Powell / CC BY-SA

Alternative designations of ω2 Scorpii

ω2 Scorpii
(omega2 Scorpii)