30 Sagittarii is a double giant star in the constellation of Sagittarius.
30 Sagittarii visual magnitude is 6.61. Because of its reltive faintness, 30 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 30 Sagittarii:
Celestial coordinates and finder chart of 30 Sagittarii
30 Sagittarii 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 30 Sagittarii are provided in the following table:
The simplified sky map below shows the position of 30 Sagittarii in the sky:
Visibility of 30 Sagittarii from your location
Digitized Sky Survey image of 30 Sagittarii
The image below is a photograph of 30 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 30 Sagittarii is -0.019 arcsec per year in Right Ascension and -0.033 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of 30 Sagittarii from the Sun and relative movement
30 Sagittarii is distant 244.93 light years from the Sun and it is moving towards the Sun at the speed of 35 kilometers per second.
Spectral properties of 30 Sagittarii
30 Sagittarii belongs to spectral class A7 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where 30 Sagittarii is situated in the Hertzsprung–Russell diagram.
30 Sagittarii star system properties
30 Sagittarii 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 30 Sagittarii double sysyem: