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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:54  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
sleep NighttimeWhat's Visible Now?
All Constellations » Leo » 

15 Leonis

Altitude: 42.3°   Azimuth: 93.3°   Direction: East

15 Leonis is a sub-giant star in the constellation of Leo.

15 Leonis visual magnitude is 5.64. Because of its reltive faintness, 15 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 15 Leonis:


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

Altitude: 42.3°
Azimuth: 93.3°
Direction: East

Celestial coordinates and finder chart of 15 Leonis

15 Leonis 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 15 Leonis are provided in the following table:

09h 43m 33s
+29° 58’ 27”

The simplified sky map below shows the position of 15 Leonis in the sky:

Finder chart 15 Leonis star
Simplified finder chart for 15 Leonis.

Visibility of 15 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 15 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: 60.0°
Max altitude: 68.5°
Azimuth: 300.0°

Digitized Sky Survey image of 15 Leonis

The image below is a photograph of 15 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 15 Leonis is -0.018 arcsec per year in Right Ascension and -0.1 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 15 Leonis star
DSS2 image of 15 Leonis. The red arrow shows the motion of 15 Leonis during the next 1000 years (-0.30 arcmin in Right Ascension and -1.67 arcmin in declination);

Distance of 15 Leonis from the Sun and relative movement

15 Leonis is distant 159.18 light years from the Sun and it is moving far from the Sun at the speed of 16 kilometers per second.

48.83 pc
159.18 ly
16 km/s
-0.018 arcsec/year
-0.1 arcsec/year

Spectral properties of 15 Leonis

15 Leonis belongs to spectral class A2 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where 15 Leonis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 15 Leonis. Attribution: Richard Powell / CC BY-SA

Alternative designations of 15 Leonis