We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Your support keeps us free & ad-free » Donate
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:48  
clear_day Transit: 12:11  
SunsetSet: 17:34
sunny DaytimeWhat's Visible Now?
All Constellations » Cassiopeia » 

Schedar - α Cassiopeiae (alpha Cassiopeiae)

Altitude: 74.1°   Azimuth: 61.4°   Direction: East-North-East

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 skies, and should be also quite easily visible from light polluted areas.

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.

Image of Schedar - α Cassiopeiae (alpha Cassiopeiae) star
DSS2 image of Schedar. The red arrow shows the motion of Schedar during the next 10000 years (8.83 arcmin in Right Ascension and -5.33 arcmin in declination);

Key facts about Schedar

2.23
Hypergiant

Schedar - α Cassiopeiae (alpha Cassiopeiae) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 74.1°
Azimuth: 61.4°
Direction: East-North-East

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:

00h 40m 30s
+56° 32’ 13”
121.42°
-6.3°
Cassiopeia

The simplified sky map below shows the position of Schedar in the sky:

Finder chart Schedar - α Cassiopeiae (alpha Cassiopeiae) star
Simplified finder chart for Schedar - α Cassiopeiae (alpha Cassiopeiae).

Visibility of Schedar from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Schedar - α Cassiopeiae (alpha Cassiopeiae) is circumpolar and transits at 14:08 UTC (altitude: 84.9°)

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.

70.08 pc
228.45 ly
-4 km/s
0.053 arcsec/year
-0.032 arcsec/year

Spectral properties of Schedar

Schedar belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.

-2.00
K0III
4368K

The red dot in the diagram below shows where Schedar is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of Schedar. Attribution: Richard Powell / CC BY-SA

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:

2.23
8.93
6.7
64.4 arcsec

Alternative designations of Schedar

Schedar
α Cassiopeiae
(alpha Cassiopeiae)
18 Cassiopeiae
SAO21609
SAO21609