18 Aquarii is a variable and double main-sequence star in the constellation of Aquarius.
18 Aquarii visual magnitude is 5.49. Because of its reltive faintness, 18 Aquarii 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 Aquarii:
Celestial coordinates and finder chart of 18 Aquarii
18 Aquarii 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 Aquarii are provided in the following table:
The simplified sky map below shows the position of 18 Aquarii in the sky:
Visibility of 18 Aquarii from your location
Digitized Sky Survey image of 18 Aquarii
The image below is a photograph of 18 Aquarii 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 Aquarii is 0.091 arcsec per year in Right Ascension and 0.008 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of 18 Aquarii from the Sun and relative movement
18 Aquarii is distant 156.73 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.
Spectral properties of 18 Aquarii
18 Aquarii belongs to spectral class F1 and has a luminosity class of V corresponding to a main-sequence star.
The red dot in the diagram below shows where 18 Aquarii is situated in the Hertzsprung–Russell diagram.
18 Aquarii star system properties
18 Aquarii 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 Aquarii double sysyem: