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 skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.
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.
Key facts about Achird
Achird - η Cassiopeiae (eta Cassiopeiae) is above the horizon from Greenwich, United Kingdom.
Altitude: 35.8°
Azimuth: 320.3°
Direction: North-West
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
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London
Achird - η Cassiopeiae (eta Cassiopeiae) is circumpolar and transits at 09:46 UTC (altitude: 83.7°)
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: