Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:45  
clear_day Transit: 12:57  
SunsetSet: 21:09 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Perseus » 

24 Persei

Altitude: -1.5°   Azimuth: 16.8°   Direction: North-North-East

24 Persei is a giant star in the constellation of Perseus.

24 Persei visual magnitude is 4.93. Because of its moderate brightness, 24 Persei 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 Persei:


24 Persei is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -1.5°
Azimuth: 16.8°
Direction: North-North-East

Celestial coordinates and finder chart of 24 Persei

24 Persei 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 24 Persei are provided in the following table:

02h 59m 03s
+35° 10’ 59”

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

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

Visibility of 24 Persei from your location

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

Today's 24 Persei rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 54.8°
Max altitude: 73.7°
Azimuth: 305.2°
24 Persei is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 24 Persei

The image below is a photograph of 24 Persei 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 Persei is -0.046 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 24 Persei star
DSS2 image of 24 Persei. The red arrow shows the motion of 24 Persei during the next 10000 years (-7.67 arcmin in Right Ascension and 1.00 arcmin in declination);

Distance of 24 Persei from the Sun and relative movement

24 Persei is distant 350.16 light years from the Sun and it is moving towards the Sun at the speed of 36 kilometers per second.

107.41 pc
350.16 ly
-36 km/s
-0.046 arcsec/year
0.006 arcsec/year

Spectral properties of 24 Persei

24 Persei belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 24 Persei is situated in the Hertzsprung–Russell diagram.

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

Alternative designations of 24 Persei