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: 6:43  
clear_day Transit: 12:51  
SunsetSet: 18:59 south
sunny DaytimeWhat's Visible Now
All Constellations » Leo » 

18 Leonis

Altitude: 19.4°   Azimuth: 264.6°   Direction: West

18 Leonis is a giant star in the constellation of Leo.

18 Leonis visual magnitude is 5.63. Because of its reltive faintness, 18 Leonis should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 18 Leonis:


18 Leonis is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 19.4°
Azimuth: 264.6°
Direction: West

Celestial coordinates and finder chart of 18 Leonis

18 Leonis is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 18 Leonis are provided in the following table:

09h 46m 23s
+11° 48’ 36”

The simplified sky map below shows the position of 18 Leonis in the sky:

Finder chart 18 Leonis star
Simplified finder chart for 18 Leonis.

Visibility of 18 Leonis 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 18 Leonis 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: 78.2°
Max altitude: 50.3°
Azimuth: 281.8°

Digitized Sky Survey image of 18 Leonis

The image below is a photograph of 18 Leonis 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 18 Leonis is -0.017 arcsec per year in Right Ascension and 0.015 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 18 Leonis star
DSS2 image of 18 Leonis. The red arrow shows the motion of 18 Leonis during the next 10000 years (-2.83 arcmin in Right Ascension and 2.50 arcmin in declination);

Distance of 18 Leonis from the Sun and relative movement

18 Leonis is distant 701.08 light years from the Sun and it is moving far from the Sun at the speed of 30 kilometers per second.

215.05 pc
701.08 ly
30 km/s
-0.017 arcsec/year
0.015 arcsec/year

Spectral properties of 18 Leonis

18 Leonis belongs to spectral class K4


The red dot in the diagram below shows where 18 Leonis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 18 Leonis. Attribution: Richard Powell / CC BY-SA

Alternative designations of 18 Leonis