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
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:38  
clear_day Transit: 11:46  
SunsetSet: 15:54 south
sunny DaytimeWhat's Visible Now?
All Constellations » Cassiopeia » 

Castula - υ2 Cassiopeiae (upsilon2 Cassiopeiae)

Altitude: 20.7°   Azimuth: 2.7°   Direction: North

Castula, also designated as υ2 Cassiopeiae (upsilon2 Cassiopeiae), is a giant star in the constellation of Cassiopeia.

Castula visual magnitude is 4.63. Because of its moderate brightness, Castula 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 Castula:


Castula - υ2 Cassiopeiae (upsilon2 Cassiopeiae) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 20.7°
Azimuth: 2.7°
Direction: North

Celestial coordinates and finder chart of Castula

Castula 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 Castula are provided in the following table:

00h 56m 39s
+59° 10’ 51”

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

Finder chart Castula - υ2 Cassiopeiae (upsilon2 Cassiopeiae) star
Simplified finder chart for Castula - υ2 Cassiopeiae (upsilon2 Cassiopeiae).

Visibility of Castula from your location

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

Castula - υ2 Cassiopeiae (upsilon2 Cassiopeiae) is circumpolar and transits at 20:22 UTC (altitude: 82.3°)

Digitized Sky Survey image of Castula

The image below is a photograph of Castula 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 Castula is -0.092 arcsec per year in Right Ascension and -0.046 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of Castula - υ2 Cassiopeiae (upsilon2 Cassiopeiae) star
DSS2 image of Castula. The red arrow shows the motion of Castula during the next 1000 years (-1.53 arcmin in Right Ascension and -0.77 arcmin in declination);

Distance of Castula from the Sun and relative movement

Castula is distant 205.81 light years from the Sun and it is moving towards the Sun at the speed of 47 kilometers per second.

63.13 pc
205.81 ly
-47 km/s
-0.092 arcsec/year
-0.046 arcsec/year

Spectral properties of Castula

Castula belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.


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

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

Alternative designations of Castula

υ2 Cassiopeiae
(upsilon2 Cassiopeiae)
28 Cassiopeiae