77 Aquarii is a variable giant star in the constellation of Aquarius.
77 Aquarii visual magnitude is 5.56. Because of its reltive faintness, 77 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 77 Aquarii:
Celestial coordinates and finder chart of 77 Aquarii
77 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 77 Aquarii are provided in the following table:
The simplified sky map below shows the position of 77 Aquarii in the sky:
Visibility of 77 Aquarii from your location
Digitized Sky Survey image of 77 Aquarii
The image below is a photograph of 77 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 77 Aquarii is -0.222 arcsec per year in Right Ascension and -0.09 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of 77 Aquarii from the Sun and relative movement
77 Aquarii is distant 140.09 light years from the Sun and it is moving towards the Sun at the speed of 36 kilometers per second.
Spectral properties of 77 Aquarii
77 Aquarii belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where 77 Aquarii is situated in the Hertzsprung–Russell diagram.