Achird - η Cassiopeiae (eta Cassiopeiae)
Achird, also designated as η Cassiopeiae (eta Cassiopeiae), is a multiple main-sequence star in the constellation of Cassiopeia.
Achird visual magnitude is 3.44. Because of its moderate brightness, Achird 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 Achird:
Celestial coordinates and finder chart of Achird
Achird is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Achird are provided in the following table:
The simplified sky map below shows the position of Achird in the sky:
Visibility of Achird from your location
Achird - η Cassiopeiae (eta Cassiopeiae) is circumpolar and transits at 19:47 UTC (altitude: 83.7°)
Digitized Sky Survey image of Achird
The image below is a photograph of Achird 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 Achird is 1.1 arcsec per year in Right Ascension and -0.529 arcsec per year in Declination and the associated displacement for the next 100 years is represented with the red arrow.
Distance of Achird from the Sun and relative movement
Achird is distant 19.41 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.
Spectral properties of Achird
Achird belongs to spectral class F9 and has a luminosity class of V corresponding to a main-sequence star.
The red dot in the diagram below shows where Achird is situated in the Hertzsprung–Russell diagram.
Achird star system properties
Achird 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 Achird double sysyem: