Schedar - α Cassiopeiae (alpha Cassiopeiae)
Schedar, also designated as α Cassiopeiae (alpha Cassiopeiae), is a variable and multiple hypergiant star in the constellation of Cassiopeia.
Schedar visual magnitude is 2.23, making it the 69th brightest star in the sky. Thanks to its high brightness, Schedar is clearly visible when observed from locations with dark skyes, and should be also quite easily visible from light polluted areas.
The table below summarizes the key facts about Schedar:
Celestial coordinates and finder chart of Schedar
Schedar 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 Schedar are provided in the following table:
The simplified sky map below shows the position of Schedar in the sky:
Visibility of Schedar from your location
Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Schedar - α Cassiopeiae (alpha Cassiopeiae) is circumpolar and transits at 12:17 UTC (altitude: 84.9°)
Digitized Sky Survey image of Schedar
The image below is a photograph of Schedar 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 Schedar is 0.053 arcsec per year in Right Ascension and -0.032 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of Schedar from the Sun and relative movement
Schedar is distant 228.45 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.
Spectral properties of Schedar
Schedar 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 Schedar is situated in the Hertzsprung–Russell diagram.
Schedar star system properties
Schedar is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the Schedar double sysyem: