18 Scorpii is a variable and double main-sequence star in the constellation of Scorpius.
18 Scorpii visual magnitude is 5.5. Because of its reltive faintness, 18 Scorpii should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.
The table below summarizes the key facts about 18 Scorpii:
Celestial coordinates and finder chart of 18 Scorpii
18 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 18 Scorpii are provided in the following table:
The simplified sky map below shows the position of 18 Scorpii in the sky:
Visibility of 18 Scorpii from your location
Today's 18 Scorpii rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):
Digitized Sky Survey image of 18 Scorpii
The image below is a photograph of 18 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 18 Scorpii is 0.234 arcsec per year in Right Ascension and -0.501 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of 18 Scorpii from the Sun and relative movement
18 Scorpii is distant 45.72 light years from the Sun and it is moving far from the Sun at the speed of 11 kilometers per second.
Spectral properties of 18 Scorpii
18 Scorpii belongs to spectral class G2 and has a luminosity class of V corresponding to a main-sequence star.
The red dot in the diagram below shows where 18 Scorpii is situated in the Hertzsprung–Russell diagram.
18 Scorpii star system properties
18 Scorpii 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 18 Scorpii double sysyem: