ψ1 Aquarii (psi1 Aquarii)
ψ1 Aquarii is a multiple hypergiant star in the constellation of Aquarius.
ψ1 Aquarii visual magnitude is 4.21. Because of its moderate brightness, ψ1 Aquarii 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 ψ1 Aquarii:
Celestial coordinates and finder chart of ψ1 Aquarii
ψ1 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 ψ1 Aquarii are provided in the following table:
The simplified sky map below shows the position of ψ1 Aquarii in the sky:
Visibility of ψ1 Aquarii from your location
Digitized Sky Survey image of ψ1 Aquarii
The image below is a photograph of ψ1 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 ψ1 Aquarii is 0.372 arcsec per year in Right Ascension and -0.016 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of ψ1 Aquarii from the Sun and relative movement
ψ1 Aquarii is distant 148.38 light years from the Sun and it is moving towards the Sun at the speed of 26 kilometers per second.
Spectral properties of ψ1 Aquarii
ψ1 Aquarii 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 ψ1 Aquarii is situated in the Hertzsprung–Russell diagram.
ψ1 Aquarii star system properties
ψ1 Aquarii is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the ψ1 Aquarii double sysyem: