18 Sagittarii is a hypergiant star in the constellation of Sagittarius.
18 Sagittarii visual magnitude is 5.6. Because of its reltive faintness, 18 Sagittarii 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 Sagittarii:
Celestial coordinates and finder chart of 18 Sagittarii
18 Sagittarii 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 18 Sagittarii are provided in the following table:
The simplified sky map below shows the position of 18 Sagittarii in the sky:
Visibility of 18 Sagittarii from your location
Digitized Sky Survey image of 18 Sagittarii
The image below is a photograph of 18 Sagittarii 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 Sagittarii is -0.123 arcsec per year in Right Ascension and -0.072 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of 18 Sagittarii from the Sun and relative movement
18 Sagittarii is distant 653.31 light years from the Sun and it is moving towards the Sun at the speed of 19 kilometers per second.
Spectral properties of 18 Sagittarii
18 Sagittarii belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.
The red dot in the diagram below shows where 18 Sagittarii is situated in the Hertzsprung–Russell diagram.