θ1 Sagittarii (theta1 Sagittarii)
θ1 Sagittarii is a sub-giant star in the constellation of Sagittarius.
θ1 Sagittarii visual magnitude is 4.37. Because of its moderate brightness, θ1 Sagittarii 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 θ1 Sagittarii:
Celestial coordinates and finder chart of θ1 Sagittarii
θ1 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 θ1 Sagittarii are provided in the following table:
The simplified sky map below shows the position of θ1 Sagittarii in the sky:
Visibility of θ1 Sagittarii from your location
Digitized Sky Survey image of θ1 Sagittarii
The image below is a photograph of θ1 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 θ1 Sagittarii is 0.006 arcsec per year in Right Ascension and -0.026 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of θ1 Sagittarii from the Sun and relative movement
θ1 Sagittarii is distant 617.42 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.
Spectral properties of θ1 Sagittarii
θ1 Sagittarii belongs to spectral class B3 and has a luminosity class of IV corresponding to a sub-giant star.
The red dot in the diagram below shows where θ1 Sagittarii is situated in the Hertzsprung–Russell diagram.