Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]

24 Cephei

24 Cephei is a bright giant star in the constellation of Cepheus.

24 Cephei visual magnitude is 4.79. Because of its moderate brightness, 24 Cephei 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 24 Cephei:

Bright giant
24 Cephei is above the horizon from Greenwich, United Kingdom [change]. Altitude: 45°.

Celestial coordinates and finder chart of 24 Cephei

24 Cephei is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 24 Cephei are provided in the following table:

22h 09m 48s
+72° 20’ 27”

The simplified sky map below shows the position of 24 Cephei in the sky:

Finder chart 24 Cephei star
Simplified finder chart for 24 Cephei.

Visibility of 24 Cephei from your location

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

24 Cephei is circumpolar and transits at 12:56 UTC (altitude: 69.1°)

Digitized Sky Survey image of 24 Cephei

The image below is a photograph of 24 Cephei 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 24 Cephei is 0.032 arcsec per year in Right Ascension and 0.003 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 24 Cephei star
DSS2 image of 24 Cephei. The red arrow shows the motion of 24 Cephei during the next 10000 years (5.33 arcmin in Right Ascension and 0.50 arcmin in declination);

Distance of 24 Cephei from the Sun and relative movement

24 Cephei is distant 377.31 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

115.74 pc
377.31 ly
-15 km/s
0.032 arcsec/year
0.003 arcsec/year

Spectral properties of 24 Cephei

24 Cephei belongs to spectral class G7 and has a luminosity class of II corresponding to a bright giant star.


The red dot in the diagram below shows where 24 Cephei is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of 24 Cephei. Attribution: Richard Powell / CC BY-SA

Alternative designations of 24 Cephei